diff --git a/res/layout-land/about.xml b/res/layout-land/about.xml
index 6d1896de8..6d9d277b9 100644
--- a/res/layout-land/about.xml
+++ b/res/layout-land/about.xml
@@ -32,7 +32,7 @@
             android:id="@+id/cancel"
             android:src="@drawable/dialer_back"
             android:background="@drawable/toolbar_button"
-            android:contentDescription="@string/content_description_edit"
+            android:contentDescription="@string/content_description_dialer_back"
             android:layout_width="0dp"
             android:layout_height="match_parent"
             android:layout_weight="0.2"
diff --git a/res/layout-land/call.xml b/res/layout-land/call.xml
index 0441dccc4..9c556801b 100644
--- a/res/layout-land/call.xml
+++ b/res/layout-land/call.xml
@@ -225,6 +225,7 @@
 						android:id="@+id/dialer"
 						android:src="@drawable/footer_dialer"
 						android:background="@color/colorC"
+						android:contentDescription="@string/content_description_numpad"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="1"
@@ -234,6 +235,7 @@
 						android:id="@+id/hang_up"
 						android:src="@drawable/call_hangup"
 						android:background="@drawable/hangup"
+						android:contentDescription="@string/content_description_hang_up"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="0.5"
@@ -243,6 +245,7 @@
 						android:id="@+id/chat"
 						android:src="@drawable/footer_chat"
 						android:background="@color/colorC"
+						android:contentDescription="@string/content_description_chat_button"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="1"
@@ -265,6 +268,7 @@
 							android:id="@+id/video"
 							android:src="@drawable/camera_default"
 							android:background="@drawable/button_background"
+							android:contentDescription="@string/content_description_switch_video"
 							android:padding="20dp"
 							android:layout_width="match_parent"
 							android:layout_height="match_parent"/>
@@ -284,6 +288,7 @@
 						android:id="@+id/micro"
 						android:src="@drawable/micro_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_toggle_micro"
 						android:padding="10dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
@@ -293,6 +298,7 @@
 						android:id="@+id/speaker"
 						android:src="@drawable/speaker_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_toggle_speaker"
 						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="match_parent"
@@ -302,6 +308,7 @@
 						android:id="@+id/audio_route"
 						android:src="@drawable/routes_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_audio_route"
 						android:visibility="gone"
 						android:padding="20dp"
 						android:layout_width="match_parent"
@@ -312,6 +319,7 @@
 						android:id="@+id/options"
 						android:src="@drawable/options_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_call_options"
 						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
@@ -345,6 +353,7 @@
 					android:id="@+id/route_bluetooth"
 					android:src="@drawable/route_bluetooth"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_bluetooth"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -355,6 +364,7 @@
 					android:id="@+id/add_call"
 					android:src="@drawable/options_add_call"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_add_call"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -386,6 +396,7 @@
 					android:id="@+id/route_earpiece"
 					android:src="@drawable/route_earpiece"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_earpiece"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -396,6 +407,7 @@
 					android:id="@+id/transfer"
 					android:src="@drawable/options_transfer_call"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_transfer"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -426,8 +438,9 @@
 					android:id="@+id/route_speaker"
 					android:src="@drawable/route_speaker"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_toggle_speaker"
 					android:visibility="invisible"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
 					android:layout_weight="1.4"/>
@@ -436,6 +449,7 @@
 					android:id="@+id/conference"
 					android:src="@drawable/options_start_conference"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_conference"
 					android:visibility="invisible"
 					android:padding="15dp"
 					android:layout_width="match_parent"
diff --git a/res/layout-land/chatlist_cell.xml b/res/layout-land/chatlist_cell.xml
index f8caec810..a8f3d65b8 100644
--- a/res/layout-land/chatlist_cell.xml
+++ b/res/layout-land/chatlist_cell.xml
@@ -89,11 +89,13 @@
 				android:layout_width="20dp"
 				android:layout_height="20dp"
 				android:background="@drawable/chat_list_indicator"
+				android:contentDescription="@string/content_description_unread_chat_message"
 				style="@style/font18"
 				android:gravity="center"
 				android:singleLine="true"
 				android:layout_alignParentRight="true"
-				android:layout_alignParentEnd="true" android:layout_alignParentTop="true"/>
+				android:layout_alignParentEnd="true"
+				android:layout_alignParentTop="true"/>
 
 			<TextView
 				android:id="@+id/lastMessage"
diff --git a/res/layout-land/dialer.xml b/res/layout-land/dialer.xml
index 4aabdefc7..2722d36c2 100644
--- a/res/layout-land/dialer.xml
+++ b/res/layout-land/dialer.xml
@@ -15,6 +15,7 @@
 		<org.linphone.ui.EraseButton
 			android:id="@+id/erase"
 			android:src="@drawable/backspace"
+			android:contentDescription="@string/content_description_backspace"
 			android:layout_width="40dp"
 			android:layout_height="wrap_content"
 			android:layout_alignParentRight="true"
@@ -72,6 +73,7 @@
 				android:id="@+id/add_contact"
 				android:src="@drawable/contact_add_button"
 				android:background="@drawable/toolbar_button"
+				android:contentDescription="@string/content_description_add_contact"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:padding="15dp"
@@ -83,6 +85,7 @@
 			android:id="@+id/call"
 			android:src="@drawable/call_audio_start"
 			android:background="@drawable/call"
+			android:contentDescription="@string/content_description_call"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
 			android:padding="12dp"
diff --git a/res/layout-land/main.xml b/res/layout-land/main.xml
index 4091a346d..7a1500805 100644
--- a/res/layout-land/main.xml
+++ b/res/layout-land/main.xml
@@ -42,6 +42,7 @@
 				<ImageView
 					android:id="@+id/cancel"
 					android:src="@drawable/dialer_back"
+					android:contentDescription="@string/content_description_dialer_back"
 					android:layout_width="wrap_content"
 					android:layout_height="match_parent"
 					android:padding="15dp"
@@ -87,6 +88,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_history"
+						android:contentDescription="@string/content_description_history"
 						android:layout_width="wrap_content"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -124,6 +126,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_contacts"
+						android:contentDescription="@string/content_description_contacts"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -147,6 +150,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_dialer"
+						android:contentDescription="@string/content_description_dialer"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -170,6 +174,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_chat"
+						android:contentDescription="@string/content_description_chat_button"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
diff --git a/res/layout-sw533dp-land/assistant_account_creation.xml b/res/layout-sw533dp-land/assistant_account_creation.xml
index 38415e4e4..43e475558 100644
--- a/res/layout-sw533dp-land/assistant_account_creation.xml
+++ b/res/layout-sw533dp-land/assistant_account_creation.xml
@@ -56,6 +56,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="text|textEmailAddress"
+					android:contentDescription="@string/content_description_username_field"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
 					android:singleLine="true"/>
@@ -132,6 +133,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="textPassword"
+					android:contentDescription="@string/content_description_confirm_password_field"
 					android:textCursorDrawable="@null"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
@@ -169,6 +171,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="text|textEmailAddress"
+					android:contentDescription="@string/content_description_email_field"
 					android:textCursorDrawable="@null"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
diff --git a/res/layout-sw533dp-land/assistant_linphone_login.xml b/res/layout-sw533dp-land/assistant_linphone_login.xml
index ba91408ed..54239505d 100644
--- a/res/layout-sw533dp-land/assistant_linphone_login.xml
+++ b/res/layout-sw533dp-land/assistant_linphone_login.xml
@@ -50,6 +50,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="text|textEmailAddress"
+					android:contentDescription="@string/content_description_username_field"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
 					android:singleLine="true"/>
@@ -103,6 +104,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="textEmailAddress"
+					android:contentDescription="@string/content_description_display_field"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
 					android:singleLine="true"/>
diff --git a/res/layout-sw533dp-land/assistant_login.xml b/res/layout-sw533dp-land/assistant_login.xml
index 0f36ca6cb..0d02af245 100644
--- a/res/layout-sw533dp-land/assistant_login.xml
+++ b/res/layout-sw533dp-land/assistant_login.xml
@@ -54,6 +54,7 @@
 						android:background="@drawable/resizable_textfield"
 						android:textColor="@color/colorB"
 						android:inputType="text|textEmailAddress"
+						android:contentDescription="@string/content_description_username_field"
 						android:layout_width="match_parent"
 						android:layout_height="40dp"
 						android:singleLine="true"/>
@@ -107,6 +108,7 @@
 						android:background="@drawable/resizable_textfield"
 						android:textColor="@color/colorB"
 						android:inputType="textEmailAddress"
+						android:contentDescription="@string/content_description_display_field"
 						android:layout_width="match_parent"
 						android:layout_height="40dp"
 						android:singleLine="true"/>
@@ -131,6 +133,7 @@
 						android:background="@drawable/resizable_textfield"
 						android:textColor="@color/colorB"
 						android:inputType="textEmailAddress"
+						android:contentDescription="@string/content_description_domain_field"
 						android:layout_width="match_parent"
 						android:layout_height="40dp"
 						android:singleLine="true"/>
diff --git a/res/layout-sw533dp-land/call.xml b/res/layout-sw533dp-land/call.xml
index 561a27ade..12862af3b 100644
--- a/res/layout-sw533dp-land/call.xml
+++ b/res/layout-sw533dp-land/call.xml
@@ -228,7 +228,8 @@
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="1"
-						android:padding="20dp" />
+						android:padding="15dp"
+						android:contentDescription="@string/content_description_numpad"/>
 
 					<ImageView
 						android:id="@+id/hang_up"
@@ -237,7 +238,8 @@
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="0.5"
-						android:padding="15dp"/>
+						android:padding="12dp"
+						android:contentDescription="@string/content_description_hang_up"/>
 
 					<ImageView
 						android:id="@+id/chat"
@@ -246,7 +248,8 @@
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="1"
-						android:padding="18dp"/>
+						android:padding="15dp"
+						android:contentDescription="@string/content_description_chat_button"/>
 				</LinearLayout>
 
 
@@ -266,9 +269,10 @@
 							android:id="@+id/video"
 							android:src="@drawable/camera_default"
 							android:background="@drawable/button_background"
-							android:padding="22dp"
+							android:padding="20dp"
 							android:layout_width="match_parent"
-							android:layout_height="match_parent"/>
+							android:layout_height="match_parent"
+							android:contentDescription="@string/content_description_switch_video"/>
 
 						<ProgressBar
 							android:id="@+id/video_in_progress"
@@ -285,38 +289,42 @@
 						android:id="@+id/micro"
 						android:src="@drawable/micro_default"
 						android:background="@drawable/button_background"
-						android:padding="15dp"
+						android:padding="10dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
-						android:layout_weight="1" />
+						android:layout_weight="1"
+						android:contentDescription="@string/content_description_toggle_micro"/>
 
 					<ImageView
 						android:id="@+id/speaker"
 						android:src="@drawable/speaker_default"
 						android:background="@drawable/button_background"
-						android:padding="18dp"
+						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="match_parent"
-						android:layout_weight="1" />
+						android:layout_weight="1"
+						android:contentDescription="@string/content_description_toggle_speaker"/>
 
 					<ImageView
 						android:id="@+id/audio_route"
 						android:src="@drawable/routes_default"
 						android:background="@drawable/button_background"
 						android:visibility="gone"
-						android:padding="20dp"
+						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="match_parent"
-						android:layout_weight="1" />
+						android:layout_weight="1"
+						android:contentDescription="@string/content_description_audio_route"/>
 
 					<ImageView
 						android:id="@+id/options"
 						android:src="@drawable/options_default"
 						android:background="@drawable/button_background"
-						android:padding="18dp"
+						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
-						android:layout_weight="1" />
+						android:layout_weight="1"
+						android:contentDescription="@string/content_description_call_options"/>
 
 				</LinearLayout>
 
@@ -327,7 +335,8 @@
 				android:layout_width="match_parent"
 				android:layout_height="60dp"
 				android:layout_above="@id/menu"
-				android:orientation="horizontal" android:layout_alignParentLeft="true"
+				android:orientation="horizontal"
+				android:layout_alignParentLeft="true"
 				android:layout_alignParentStart="true">
 
 				<TextView
@@ -346,21 +355,23 @@
 					android:id="@+id/route_bluetooth"
 					android:src="@drawable/route_bluetooth"
 					android:background="@drawable/button_background"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4" />
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_bluetooth"/>
 
 				<ImageView
 					android:id="@+id/add_call"
 					android:src="@drawable/options_add_call"
 					android:background="@drawable/button_background"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4" />
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_add_call"/>
 
 			</LinearLayout>
 
@@ -387,21 +398,23 @@
 					android:id="@+id/route_earpiece"
 					android:src="@drawable/route_earpiece"
 					android:background="@drawable/button_background"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4"/>
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_earpiece"/>
 
 				<ImageView
 					android:id="@+id/transfer"
 					android:src="@drawable/options_transfer_call"
 					android:background="@drawable/button_background"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4"/>
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_transfer"/>
 
 			</LinearLayout>
 
@@ -428,20 +441,22 @@
 					android:src="@drawable/route_speaker"
 					android:background="@drawable/button_background"
 					android:visibility="invisible"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4"/>
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_toggle_speaker"/>
 
 				<ImageView
 					android:id="@+id/conference"
 					android:src="@drawable/options_start_conference"
 					android:background="@drawable/button_background"
 					android:visibility="invisible"
-					android:padding="20dp"
+					android:padding="15dp"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
-					android:layout_weight="1.4"/>
+					android:layout_weight="1.4"
+					android:contentDescription="@string/content_description_conference"/>
 
 			</LinearLayout>
 
diff --git a/res/layout-sw533dp-land/call_incoming.xml b/res/layout-sw533dp-land/call_incoming.xml
index 43392d1eb..61310581e 100644
--- a/res/layout-sw533dp-land/call_incoming.xml
+++ b/res/layout-sw533dp-land/call_incoming.xml
@@ -175,7 +175,6 @@
 				android:layout_height="wrap_content"
 				android:alpha="0.2"/>
 
-
 			<ImageView
 				android:src="@drawable/arrow_hangup"
 				android:layout_width="wrap_content"
diff --git a/res/layout-sw533dp-land/chatlist_cell.xml b/res/layout-sw533dp-land/chatlist_cell.xml
index a4addf588..fdd4a3b5c 100644
--- a/res/layout-sw533dp-land/chatlist_cell.xml
+++ b/res/layout-sw533dp-land/chatlist_cell.xml
@@ -17,7 +17,8 @@
 		android:adjustViewBounds="true"
 		android:layout_alignParentRight="true"
 		android:layout_centerVertical="true"
-		android:visibility="invisible" android:layout_alignParentTop="true"/>
+		android:visibility="invisible"
+		android:layout_alignParentTop="true"/>
 	
 	<LinearLayout
 	    android:layout_width="match_parent"
@@ -47,7 +48,6 @@
 				<ImageView
 					android:id="@+id/mask"
 					android:src="@drawable/avatar_mask"
-					android:contentDescription="@string/content_description_contact_picture"
 					android:layout_width="35dp"
 					android:layout_height="35dp"
 					android:adjustViewBounds="true"/>
@@ -85,6 +85,7 @@
 				android:layout_width="20dp"
 				android:layout_height="20dp"
 				android:background="@drawable/chat_list_indicator"
+				android:contentDescription="@string/content_description_unread_chat_message"
 				style="@style/font18"
 				android:gravity="center"
 				android:singleLine="true"
diff --git a/res/layout-sw533dp-land/dialer.xml b/res/layout-sw533dp-land/dialer.xml
index cf3875d5f..b2d68e2c6 100644
--- a/res/layout-sw533dp-land/dialer.xml
+++ b/res/layout-sw533dp-land/dialer.xml
@@ -30,6 +30,7 @@
 			<org.linphone.ui.EraseButton
 				android:id="@+id/erase"
 				android:src="@drawable/backspace"
+				android:contentDescription="@string/content_description_backspace"
 				android:layout_width="40dp"
 				android:layout_height="wrap_content"
 				android:layout_alignParentRight="true"
@@ -79,6 +80,7 @@
 				<ImageView
 					android:id="@+id/add_contact"
 					android:src="@drawable/contact_add_button"
+					android:contentDescription="@string/content_description_add_contact"
 					android:background="@drawable/toolbar_button"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
@@ -90,6 +92,7 @@
 			<org.linphone.ui.CallButton
 				android:id="@+id/call"
 				android:src="@drawable/call_audio_start"
+				android:contentDescription="@string/content_description_call"
 				android:background="@drawable/call"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
diff --git a/res/layout-sw533dp-land/main.xml b/res/layout-sw533dp-land/main.xml
index 9a5b2284f..4ef06a512 100644
--- a/res/layout-sw533dp-land/main.xml
+++ b/res/layout-sw533dp-land/main.xml
@@ -42,6 +42,7 @@
 				<ImageView
 					android:id="@+id/cancel"
 					android:src="@drawable/dialer_back"
+					android:contentDescription="@string/content_description_dialer_back"
 					android:layout_width="wrap_content"
 					android:layout_height="match_parent"
 					android:padding="15dp"
@@ -109,6 +110,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_history"
+						android:contentDescription="@string/content_description_history"
 						android:layout_width="wrap_content"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -146,6 +148,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_contacts"
+						android:contentDescription="@string/content_description_contacts"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -169,6 +172,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_dialer"
+						android:contentDescription="@string/content_description_dialer"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -192,6 +196,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_chat"
+						android:contentDescription="@string/content_description_chat_button"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
diff --git a/res/layout-sw533dp/chatlist_cell.xml b/res/layout-sw533dp/chatlist_cell.xml
index 1f70c94d5..d92015b53 100644
--- a/res/layout-sw533dp/chatlist_cell.xml
+++ b/res/layout-sw533dp/chatlist_cell.xml
@@ -17,7 +17,8 @@
 		android:adjustViewBounds="true"
 		android:layout_alignParentRight="true"
 		android:layout_centerVertical="true"
-		android:visibility="invisible" android:layout_alignParentTop="true"/>
+		android:visibility="invisible"
+		android:layout_alignParentTop="true"/>
 	
 	<LinearLayout
 	    android:layout_width="match_parent"
@@ -47,7 +48,6 @@
 				<ImageView
 					android:id="@+id/mask"
 					android:src="@drawable/avatar_mask"
-					android:contentDescription="@string/content_description_contact_picture"
 					android:layout_width="35dp"
 					android:layout_height="35dp"
 					android:adjustViewBounds="true"/>
@@ -86,6 +86,7 @@
 				android:layout_width="20dp"
 				android:layout_height="20dp"
 				android:background="@drawable/chat_list_indicator"
+				android:contentDescription="@string/content_description_unread_chat_message"
 				style="@style/font18"
 				android:gravity="center"
 				android:singleLine="true"
diff --git a/res/layout-sw533dp/dialer.xml b/res/layout-sw533dp/dialer.xml
index 85eadecaa..6b027aece 100644
--- a/res/layout-sw533dp/dialer.xml
+++ b/res/layout-sw533dp/dialer.xml
@@ -29,6 +29,7 @@
 			<org.linphone.ui.EraseButton
 				android:id="@+id/erase"
 				android:src="@drawable/backspace"
+				android:contentDescription="@string/content_description_backspace"
 				android:layout_width="40dp"
 				android:layout_height="wrap_content"
 				android:layout_alignParentRight="true"
@@ -79,6 +80,7 @@
 					android:id="@+id/add_contact"
 					android:src="@drawable/contact_add_button"
 					android:background="@drawable/toolbar_button"
+					android:contentDescription="@string/content_description_add_contact"
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
 					android:padding="15dp"
@@ -90,6 +92,7 @@
 				android:id="@+id/call"
 				android:src="@drawable/call_audio_start"
 				android:background="@drawable/call"
+				android:contentDescription="@string/content_description_call"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:padding="12dp"
diff --git a/res/layout-sw533dp/main.xml b/res/layout-sw533dp/main.xml
index ad32752f5..a2e3698de 100644
--- a/res/layout-sw533dp/main.xml
+++ b/res/layout-sw533dp/main.xml
@@ -42,6 +42,7 @@
 				<ImageView
 					android:id="@+id/cancel"
 					android:src="@drawable/dialer_back"
+					android:contentDescription="@string/content_description_dialer_back"
 					android:layout_width="wrap_content"
 					android:layout_height="match_parent"
 					android:padding="15dp"
@@ -88,7 +89,6 @@
 								android:layout_height="match_parent"/>
 
 						</LinearLayout>
-
 					</LinearLayout>
 				</FrameLayout>
 
@@ -111,6 +111,7 @@
 					<ImageView
 						android:id="@+id/footer_history"
 						android:src="@drawable/footer_history"
+						android:contentDescription="@string/content_description_history"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -147,6 +148,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_contacts"
+						android:contentDescription="@string/content_description_contacts"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -170,6 +172,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_dialer"
+						android:contentDescription="@string/content_description_dialer"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -193,6 +196,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_chat"
+						android:contentDescription="@string/content_description_chat"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
diff --git a/res/layout/about.xml b/res/layout/about.xml
index cdd6e01c1..b1e79c0d8 100644
--- a/res/layout/about.xml
+++ b/res/layout/about.xml
@@ -32,7 +32,7 @@
             android:id="@+id/cancel"
             android:src="@drawable/dialer_back"
             android:background="@drawable/toolbar_button"
-            android:contentDescription="@string/content_description_edit"
+            android:contentDescription="@string/content_description_dialer_back"
             android:layout_width="0dp"
             android:layout_height="match_parent"
             android:layout_weight="0.2"
diff --git a/res/layout/assistant_account_creation.xml b/res/layout/assistant_account_creation.xml
index 9943745a1..c3d98c478 100644
--- a/res/layout/assistant_account_creation.xml
+++ b/res/layout/assistant_account_creation.xml
@@ -49,6 +49,7 @@
 					android:id="@+id/username"
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
+					android:contentDescription="@string/content_description_username_field"
 					android:inputType="text|textEmailAddress"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
@@ -117,6 +118,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="textPassword"
+					android:contentDescription="@string/content_description_confirm_password_field"
 					android:textCursorDrawable="@null"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
@@ -152,6 +154,7 @@
 					android:background="@drawable/resizable_textfield"
 					android:textColor="@color/colorB"
 					android:inputType="text|textEmailAddress"
+					android:contentDescription="@string/content_description_email_field"
 					android:textCursorDrawable="@null"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
@@ -175,7 +178,6 @@
 				android:background="@drawable/assistant_button"
 				android:textColor="@drawable/assistant_button_text_color"
 				style="@style/font8"
-				android:contentDescription="@string/content_description_valid"
 				android:layout_width="wrap_content"
 				android:layout_height="40dp"
 				android:paddingLeft="10dp"
diff --git a/res/layout/assistant_account_creation_activation.xml b/res/layout/assistant_account_creation_activation.xml
index bf427c90a..f3d795e41 100644
--- a/res/layout/assistant_account_creation_activation.xml
+++ b/res/layout/assistant_account_creation_activation.xml
@@ -39,7 +39,6 @@
 			android:background="@drawable/assistant_button"
 			android:textColor="@drawable/assistant_button_text_color"
 			style="@style/font8"
-			android:contentDescription="@string/content_description_valid"
 			android:layout_width="wrap_content"
 			android:layout_height="40dp"
 			android:layout_margin="10dp"
diff --git a/res/layout/assistant_linphone_login.xml b/res/layout/assistant_linphone_login.xml
index 3c9407763..692b89a08 100644
--- a/res/layout/assistant_linphone_login.xml
+++ b/res/layout/assistant_linphone_login.xml
@@ -46,6 +46,7 @@
 				android:background="@drawable/resizable_textfield"
 				android:textColor="@color/colorB"
 				android:inputType="text|textEmailAddress"
+				android:contentDescription="@string/content_description_username_field"
 				android:layout_width="match_parent"
 				android:layout_height="40dp"
 				android:singleLine="true"/>
@@ -80,6 +81,7 @@
 				android:background="@drawable/resizable_textfield"
 				android:textColor="@color/colorB"
 				android:inputType="textEmailAddress"
+				android:contentDescription="@string/content_description_username_field"
 				android:layout_width="match_parent"
 				android:layout_height="40dp"
 				android:singleLine="true"/>
diff --git a/res/layout/assistant_login.xml b/res/layout/assistant_login.xml
index 0cf94cf8f..5ae935206 100644
--- a/res/layout/assistant_login.xml
+++ b/res/layout/assistant_login.xml
@@ -46,6 +46,7 @@
 				android:background="@drawable/resizable_textfield"
 				android:textColor="@color/colorB"
 				android:inputType="text|textEmailAddress"
+				android:contentDescription="@string/content_description_username_field"
 				android:layout_width="match_parent"
 				android:layout_height="40dp"
 				android:singleLine="true"/>
@@ -80,6 +81,7 @@
 				android:background="@drawable/resizable_textfield"
 				android:textColor="@color/colorB"
 				android:inputType="textEmailAddress"
+				android:contentDescription="@string/content_description_domain_field"
 				android:layout_width="match_parent"
 				android:layout_height="40dp"
 				android:singleLine="true"/>
@@ -97,6 +99,7 @@
 				android:background="@drawable/resizable_textfield"
 				android:textColor="@color/colorB"
 				android:inputType="textEmailAddress"
+				android:contentDescription="@string/content_description_display_field"
 				android:layout_width="match_parent"
 				android:layout_height="40dp"
 				android:singleLine="true"/>
diff --git a/res/layout/assistant_remote_provisioning.xml b/res/layout/assistant_remote_provisioning.xml
index e9e1b601e..483131e1e 100644
--- a/res/layout/assistant_remote_provisioning.xml
+++ b/res/layout/assistant_remote_provisioning.xml
@@ -42,6 +42,7 @@
 			android:background="@drawable/resizable_textfield"
 			android:textColor="@color/colorB"
 			android:inputType="textUri"
+			android:contentDescription="@string/content_description_url_field"
 			android:layout_width="match_parent"
 			android:layout_height="40dp"
 			android:singleLine="true"/>
diff --git a/res/layout/assistant_topbar.xml b/res/layout/assistant_topbar.xml
index 8af0b24db..328598743 100644
--- a/res/layout/assistant_topbar.xml
+++ b/res/layout/assistant_topbar.xml
@@ -29,7 +29,7 @@
 		android:id="@+id/assistant_cancel"
 		android:src="@drawable/dialer_back"
 		android:background="@drawable/toolbar_button"
-		android:contentDescription="@string/content_description_dialer"
+		android:contentDescription="@string/content_description_dialer_back"
 		android:layout_width="0dp"
 		android:layout_height="match_parent"
 		android:layout_weight="0.2"
diff --git a/res/layout/call.xml b/res/layout/call.xml
index 69cbf91a0..280bdb653 100644
--- a/res/layout/call.xml
+++ b/res/layout/call.xml
@@ -208,6 +208,7 @@
 						android:id="@+id/video"
 						android:src="@drawable/camera_button"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_switch_video"
 						android:padding="20dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"/>
@@ -227,6 +228,7 @@
 						android:id="@+id/micro"
 						android:src="@drawable/micro_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_toggle_micro"
 						android:padding="10dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
@@ -236,6 +238,7 @@
 						android:id="@+id/speaker"
 						android:src="@drawable/speaker_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_toggle_speaker"
 						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="match_parent"
@@ -245,6 +248,7 @@
 						android:id="@+id/audio_route"
 						android:src="@drawable/routes_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_audio_route"
 						android:visibility="gone"
 						android:padding="15dp"
 						android:layout_width="match_parent"
@@ -255,6 +259,7 @@
 						android:id="@+id/options"
 						android:src="@drawable/options_default"
 						android:background="@drawable/button_background"
+						android:contentDescription="@string/content_description_call_options"
 						android:padding="15dp"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
@@ -273,6 +278,7 @@
 						android:id="@+id/dialer"
 						android:src="@drawable/footer_dialer"
 						android:background="@color/colorC"
+						android:contentDescription="@string/content_description_numpad"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="0.8"
@@ -282,6 +288,7 @@
 						android:id="@+id/hang_up"
 						android:src="@drawable/call_hangup"
 						android:background="@drawable/hangup"
+						android:contentDescription="@string/content_description_hang_up"
 						android:layout_gravity="center"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
@@ -292,6 +299,7 @@
 						android:id="@+id/chat"
 						android:src="@drawable/footer_chat"
 						android:background="@color/colorC"
+						android:contentDescription="@string/content_description_chat_button"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:layout_weight="0.8"
@@ -323,6 +331,7 @@
 					android:id="@+id/route_bluetooth"
 					android:src="@drawable/route_bluetooth"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_bluetooth"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -333,6 +342,7 @@
 					android:id="@+id/add_call"
 					android:src="@drawable/options_add_call_button"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_add_call"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -364,6 +374,7 @@
 					android:id="@+id/route_earpiece"
 					android:src="@drawable/route_earpiece"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_earpiece"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -374,6 +385,7 @@
 					android:id="@+id/transfer"
 					android:src="@drawable/options_transfer_call_button"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_transfer"
 					android:padding="15dp"
 					android:visibility="invisible"
 					android:layout_width="match_parent"
@@ -404,6 +416,7 @@
 					android:id="@+id/route_speaker"
 					android:src="@drawable/route_speaker"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_toggle_speaker"
 					android:visibility="invisible"
 					android:padding="15dp"
 					android:layout_width="match_parent"
@@ -414,6 +427,7 @@
 					android:id="@+id/conference"
 					android:src="@drawable/options_start_conference_button"
 					android:background="@drawable/button_background"
+					android:contentDescription="@string/content_description_conference"
 					android:visibility="invisible"
 					android:padding="15dp"
 					android:layout_width="match_parent"
diff --git a/res/layout/chat.xml b/res/layout/chat.xml
index 46e5dba17..1964fa8d6 100644
--- a/res/layout/chat.xml
+++ b/res/layout/chat.xml
@@ -15,6 +15,7 @@
 			android:id="@+id/back"
 			android:src="@drawable/back"
 			android:background="@drawable/toolbar_button"
+			android:contentDescription="@string/content_description_back"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -45,6 +46,7 @@
 			android:id="@+id/back_to_call"
 			android:src="@drawable/call_back"
 			android:background="@drawable/toolbar_button"
+			android:contentDescription="@string/content_description_back_call"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -55,7 +57,7 @@
 			android:id="@+id/edit"
 			android:src="@drawable/edit_list_button"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_edit_list"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -81,6 +83,7 @@
 			<ImageView
 				android:id="@+id/send_picture"
 				android:src="@drawable/chat_send_file"
+				android:contentDescription="@string/content_description_send_file"
 				android:padding="5dp"
 				android:layout_weight="0.1"
 				android:layout_width="wrap_content"
@@ -92,6 +95,7 @@
 				android:imeOptions="flagNoExtractUi"
 				android:textCursorDrawable="@null"
 				android:inputType="textMultiLine"
+				android:contentDescription="@string/content_description_message"
 				android:maxLines="3"
 				android:padding="5dp"
 				android:layout_margin="5dp"
@@ -104,6 +108,7 @@
 			<ImageView
 				android:id="@+id/send_message"
 				android:src="@drawable/chat_send_message"
+				android:contentDescription="@string/content_description_send_message"
 				android:padding="5dp"
 				android:layout_weight="0.1"
 				android:layout_width="wrap_content"
diff --git a/res/layout/chat_bubble_incoming.xml b/res/layout/chat_bubble_incoming.xml
index b442b3db2..d3912a238 100644
--- a/res/layout/chat_bubble_incoming.xml
+++ b/res/layout/chat_bubble_incoming.xml
@@ -46,7 +46,6 @@
 				<ImageView
 					android:id="@+id/mask"
 					android:src="@drawable/avatar_chat_mask"
-					android:contentDescription="@string/content_description_contact_picture"
 					android:layout_width="40dp"
 					android:layout_height="40dp"/>
 
diff --git a/res/layout/chatlist.xml b/res/layout/chatlist.xml
index 24eaf650e..6fcdfb3a2 100644
--- a/res/layout/chatlist.xml
+++ b/res/layout/chatlist.xml
@@ -26,7 +26,7 @@
 			android:id="@+id/back_in_call"
 			android:src="@drawable/call_back"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_call"
+			android:contentDescription="@string/content_description_back_call"
 			android:visibility="invisible"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
@@ -42,7 +42,7 @@
 			android:id="@+id/edit"
 			android:src="@drawable/edit_list_button"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_edit_list"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
diff --git a/res/layout/chatlist_cell.xml b/res/layout/chatlist_cell.xml
index acf2120eb..b49f44fad 100644
--- a/res/layout/chatlist_cell.xml
+++ b/res/layout/chatlist_cell.xml
@@ -47,7 +47,6 @@
 				<ImageView
 					android:id="@+id/mask"
 					android:src="@drawable/avatar_mask"
-					android:contentDescription="@string/content_description_contact_picture"
 					android:layout_width="35dp"
 					android:layout_height="35dp"
 					android:adjustViewBounds="true"/>
@@ -85,6 +84,7 @@
 				android:id="@+id/unreadMessages"
 				android:layout_width="20dp"
 				android:layout_height="20dp"
+				android:contentDescription="@string/content_description_unread_chat_message"
 				android:background="@drawable/chat_list_indicator"
 				style="@style/font18"
 				android:gravity="center"
diff --git a/res/layout/conf_call_control_row.xml b/res/layout/conf_call_control_row.xml
index 736582f21..4c8fd365f 100644
--- a/res/layout/conf_call_control_row.xml
+++ b/res/layout/conf_call_control_row.xml
@@ -49,6 +49,7 @@
 	<ImageView
 		android:id="@+id/quitConference"
 		android:src="@drawable/conference_exit_default"
+		android:contentDescription="@string/content_description_exit_conference"
         android:layout_width="30dp"
         android:layout_height="30dp"
         android:gravity="center_vertical"
diff --git a/res/layout/contact.xml b/res/layout/contact.xml
index 451a08f5f..d5941ed1c 100644
--- a/res/layout/contact.xml
+++ b/res/layout/contact.xml
@@ -78,7 +78,6 @@
 				<ImageView
 					android:id="@+id/mask"
 					android:src="@drawable/avatar_mask"
-					android:contentDescription="@string/content_description_contact_picture"
 					android:layout_width="100dp"
 					android:layout_height="100dp"
 					android:adjustViewBounds="true"
diff --git a/res/layout/contact_cell.xml b/res/layout/contact_cell.xml
index 7cfb879a0..cf233a2ce 100644
--- a/res/layout/contact_cell.xml
+++ b/res/layout/contact_cell.xml
@@ -52,7 +52,6 @@
 			<ImageView
 				android:id="@+id/mask"
 				android:src="@drawable/avatar_mask"
-				android:contentDescription="@string/content_description_contact_picture"
 				android:layout_width="35dp"
 				android:layout_height="35dp"
 				android:adjustViewBounds="true"
diff --git a/res/layout/contact_control_row.xml b/res/layout/contact_control_row.xml
index 360344f79..ca2291d79 100644
--- a/res/layout/contact_control_row.xml
+++ b/res/layout/contact_control_row.xml
@@ -48,7 +48,7 @@
 			<ImageView
 				android:id="@+id/contact_call"
 				android:src="@drawable/call_start_body_default"
-				android:contentDescription="@string/content_description_dial_back"
+				android:contentDescription="@string/content_description_call"
 				android:layout_width="60dp"
 				android:layout_height="60dp"
 				android:layout_margin="10dp"
diff --git a/res/layout/contact_edit.xml b/res/layout/contact_edit.xml
index 4239079b3..540fc3767 100644
--- a/res/layout/contact_edit.xml
+++ b/res/layout/contact_edit.xml
@@ -15,7 +15,7 @@
 			android:id="@+id/cancel"
 			android:src="@drawable/cancel_edit"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_back"
+			android:contentDescription="@string/content_description_cancel_button"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -40,7 +40,7 @@
 			android:id="@+id/ok"
 			android:src="@drawable/valid"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_valid"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -86,7 +86,6 @@
 					<ImageView
 						android:id="@+id/mask"
 						android:src="@drawable/avatar_mask"
-						android:contentDescription="@string/content_description_contact_picture"
 						android:layout_width="100dp"
 						android:layout_height="100dp"
 						android:adjustViewBounds="true"
@@ -108,6 +107,7 @@
 					android:id="@+id/contactLastName"
 					android:background="@drawable/resizable_textfield"
 					style="@style/font6"
+					android:contentDescription="@string/content_description_contact_last_name"
 					android:textCursorDrawable="@null"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
@@ -128,6 +128,7 @@
 					android:textCursorDrawable="@null"
 					android:background="@drawable/resizable_textfield"
 					style="@style/font6"
+					android:contentDescription="@string/content_description_contact_first_name"
 					android:layout_width="match_parent"
 					android:layout_height="40dp"
 					android:gravity="left"
diff --git a/res/layout/contacts_list.xml b/res/layout/contacts_list.xml
index 656bf4a70..e8c8480aa 100644
--- a/res/layout/contacts_list.xml
+++ b/res/layout/contacts_list.xml
@@ -67,7 +67,7 @@
 			android:id="@+id/newContact"
 			android:src="@drawable/contact_add"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_new_contact"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -77,7 +77,7 @@
 			android:id="@+id/edit"
 			android:src="@drawable/edit_list_button"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_edit_list"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -92,7 +92,7 @@
 		android:layout_margin="10dp">
 
 		<EditText
-            android:contentDescription="@string/content_description_search"
+            android:contentDescription="@string/content_description_search_contact"
 			android:textCursorDrawable="@null"
 			android:id="@+id/searchField"
 			android:layout_width="match_parent"
diff --git a/res/layout/dialer.xml b/res/layout/dialer.xml
index d30a7d4d3..e82be91b9 100644
--- a/res/layout/dialer.xml
+++ b/res/layout/dialer.xml
@@ -15,6 +15,7 @@
 		<org.linphone.ui.EraseButton
 			android:id="@+id/erase"
 			android:src="@drawable/backspace"
+			android:contentDescription="@string/content_description_backspace"
 			android:layout_width="40dp"
 			android:layout_height="wrap_content"
 			android:layout_alignParentRight="true"
@@ -65,6 +66,7 @@
 				android:id="@+id/add_contact"
 				android:src="@drawable/contact_add_button"
 				android:background="@drawable/toolbar_button"
+				android:contentDescription="@string/content_description_add_contact"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:padding="15dp"
@@ -76,6 +78,7 @@
 			android:id="@+id/call"
 			android:src="@drawable/call_audio_start"
 			android:background="@drawable/call"
+			android:contentDescription="@string/content_description_call"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
 			android:padding="12dp"
diff --git a/res/layout/edit_list.xml b/res/layout/edit_list.xml
index e9d0a2906..472011b97 100644
--- a/res/layout/edit_list.xml
+++ b/res/layout/edit_list.xml
@@ -11,7 +11,7 @@
 		android:id="@+id/cancel"
 		android:src="@drawable/cancel_edit"
 		android:background="@drawable/toolbar_button"
-		android:contentDescription="@string/content_description_valid"
+		android:contentDescription="@string/content_description_cancel_button"
 		android:layout_width="0dp"
 		android:layout_height="match_parent"
 		android:layout_weight="0.2"
@@ -26,7 +26,7 @@
 		android:id="@+id/select_all"
 		android:src="@drawable/select_all"
 		android:background="@drawable/toolbar_button"
-		android:contentDescription="@string/content_description_valid"
+		android:contentDescription="@string/content_description_select_all"
 		android:layout_width="0dp"
 		android:layout_height="match_parent"
 		android:layout_weight="0.2"
@@ -36,7 +36,7 @@
 		android:id="@+id/deselect_all"
 		android:src="@drawable/deselect_all"
 		android:background="@drawable/toolbar_button"
-		android:contentDescription="@string/content_description_valid"
+		android:contentDescription="@string/content_description_deselect_all"
 		android:layout_width="0dp"
 		android:layout_height="match_parent"
 		android:layout_weight="0.2"
@@ -47,7 +47,7 @@
 		android:id="@+id/delete"
 		android:src="@drawable/delete_button"
 		android:background="@drawable/toolbar_button"
-		android:contentDescription="@string/content_description_valid"
+		android:contentDescription="@string/content_description_delete_selection"
 		android:layout_width="0dp"
 		android:layout_height="match_parent"
 		android:layout_weight="0.2"
diff --git a/res/layout/history.xml b/res/layout/history.xml
index ed51f7e41..ffa8d6f9c 100644
--- a/res/layout/history.xml
+++ b/res/layout/history.xml
@@ -67,7 +67,7 @@
 			android:id="@+id/edit"
 			android:src="@drawable/edit_list_button"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_edit_list"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
diff --git a/res/layout/history_cell.xml b/res/layout/history_cell.xml
index 314ecc202..4688e258e 100644
--- a/res/layout/history_cell.xml
+++ b/res/layout/history_cell.xml
@@ -52,7 +52,6 @@
 			<ImageView
 				android:id="@+id/mask"
 				android:src="@drawable/avatar_mask"
-				android:contentDescription="@string/content_description_contact_picture"
 				android:layout_width="35dp"
 				android:layout_height="35dp"
 				android:adjustViewBounds="true"
diff --git a/res/layout/history_detail.xml b/res/layout/history_detail.xml
index fa13308e2..724ed7595 100644
--- a/res/layout/history_detail.xml
+++ b/res/layout/history_detail.xml
@@ -16,6 +16,7 @@
 			android:id="@+id/back"
 			android:src="@drawable/back"
 			android:background="@drawable/toolbar_button"
+			android:contentDescription="@string/content_description_back"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -30,7 +31,7 @@
 			android:id="@+id/add_contact"
 			android:src="@drawable/contact_add"
 			android:background="@drawable/toolbar_button"
-			android:contentDescription="@string/content_description_edit"
+			android:contentDescription="@string/content_description_add_contact"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
 			android:layout_weight="0.2"
@@ -94,6 +95,7 @@
 				<ImageView
 					android:id="@+id/call"
 					android:src="@drawable/call_start_body_default"
+					android:contentDescription="@string/content_description_call"
 					android:layout_width="60dp"
 					android:layout_height="60dp"
 					android:layout_margin="10dp"/>
@@ -101,6 +103,7 @@
 				<ImageView
 					android:id="@+id/chat"
 					android:src="@drawable/chat_start_body_default"
+					android:contentDescription="@string/content_description_chat"
 					android:layout_width="60dp"
 					android:layout_height="60dp"
 					android:layout_margin="10dp"/>
diff --git a/res/layout/main.xml b/res/layout/main.xml
index e8bdcd4e8..3656b91a0 100644
--- a/res/layout/main.xml
+++ b/res/layout/main.xml
@@ -42,6 +42,7 @@
 				<ImageView
 					android:id="@+id/cancel"
 					android:src="@drawable/dialer_back"
+					android:contentDescription="@string/content_description_dialer_back"
 					android:layout_width="wrap_content"
 					android:layout_height="match_parent"
 					android:padding="15dp"
@@ -89,6 +90,7 @@
 						android:src="@drawable/footer_history"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
+						android:contentDescription="@string/content_description_history"
 						android:padding="15dp"
 						android:layout_centerInParent="true"/>
 
@@ -121,6 +123,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_contacts"
+						android:contentDescription="@string/content_description_contacts"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -144,6 +147,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_dialer"
+						android:contentDescription="@string/content_description_dialer"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
@@ -167,6 +171,7 @@
 
 					<ImageView
 						android:src="@drawable/footer_chat"
+						android:contentDescription="@string/content_description_chat_button"
 						android:layout_width="match_parent"
 						android:layout_height="wrap_content"
 						android:padding="15dp"
diff --git a/res/layout/side_menu_main_account.xml b/res/layout/side_menu_main_account.xml
index 999b606fa..e4e89707f 100644
--- a/res/layout/side_menu_main_account.xml
+++ b/res/layout/side_menu_main_account.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	android:id="@+id/default_account"
+	android:contentDescription="@string/content_description_default_account"
 	android:background="@color/colorF"
 	android:layout_width="match_parent"
 	android:layout_height="70dp">
diff --git a/res/layout/status.xml b/res/layout/status.xml
index 1833577bd..314c3d9e2 100644
--- a/res/layout/status.xml
+++ b/res/layout/status.xml
@@ -14,6 +14,7 @@
 		<ImageView
 			android:id="@+id/side_menu_button"
 			android:src="@drawable/menu_burger"
+			android:contentDescription="@string/content_description_menu"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
 			android:padding="10dp"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 535d91f60..2b3237b5c 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -9,19 +9,6 @@
 	<string name="wait_dialog_text">Starting up</string>
 	<string name="notification_registered">%s registered</string>
 	<string name="notification_register_failure">%s failed to register</string>
-	<string name="about_version">Linphone Android %s</string>
-	<string name="about_liblinphone_version">Linphone Core %s</string>
-	<string name="about_text">GNU General Public License V2\n © 2010-2016 Belledonne Communications</string>
-	<string name="about_link">www.linphone.org</string>
-
-	<string name="sync_account_name">linphone contacts</string>
-
-	<string name="history_date_format">EEE, d MMM</string>
-	<string name="history_detail_date_format">yyyy/MM/dd - HH:mm - </string>
-	<string name="messages_date_format">dd/MM, HH:mm</string>
-	<string name="messages_list_date_format">dd/MM</string>
-	<string name="today_date_format">HH:mm</string>
-	<string name="picture_name_format">linphone-mms-%s.jpg</string>
 	<string name="tunnel_host"></string>
 
 	<!-- Common -->
@@ -308,26 +295,30 @@
 	<!-- Content description -->
 	<string name="content_description_back">Back</string>
 	<string name="content_description_dialer">Dialer</string>
+	<string name="content_description_menu">Menu</string>
 	<string name="content_description_toggle_micro">Toggle micro</string>
 	<string name="content_description_toggle_speaker">Toggle speaker</string>
 	<string name="content_description_decline">Decline</string>
 	<string name="content_description_hang_up">Hang up</string>
 	<string name="content_description_accept">Accept</string>
-	<string name="content_description_edit">Edit button</string>
-	<string name="content_description_valid">Valid button</string>
+	<string name="content_description_edit">Edit</string>
+	<string name="content_description_edit_list">Edit List</string>
+	<string name="content_description_valid">Valid</string>
 	<string name="content_description_add_contact">Add to contacts</string>
 	<string name="content_description_new_contact">New contact</string>
 	<string name="content_description_call">Call</string>
 	<string name="content_description_backspace">Backspace</string>
 	<string name="content_description_chat">Chat</string>
 	<string name="content_description_dial_back">Dial back</string>
+	<string name="content_description_dialer_back">Return to dialer</string>
 	<string name="content_description_contact_picture">Contact picture</string>
 	<string name="content_description_send_message">Send message</string>
 	<string name="content_description_detail">Details</string>
-	<string name="content_description_delete">Delete button</string>
-	<string name="content_description_add">Add button</string>
+	<string name="content_description_delete">Delete</string>
+	<string name="content_description_add">Add call</string>
 	<string name="content_description_new_discussion">New discussion</string>
 	<string name="content_description_search">Search</string>
+	<string name="content_description_search_contact">Search contact</string>
 	<string name="content_description_all_contacts">All contacts</string>
 	<string name="content_description_linphone_contacts">Linphone contacts</string>
 	<string name="content_description_call_direction">Call direction</string>
@@ -346,4 +337,26 @@
 	<string name="content_description_cancel_button">Cancel button</string>
 	<string name="content_description_message_status">Message status</string>
 	<string name="content_description_conference">Conference</string>
+	<string name="content_description_username_field">Username field</string>
+	<string name="content_description_display_field">Display name field</string>
+	<string name="content_description_domain_field">Domain field</string>
+	<string name="content_description_url_field">Remote provisioning field</string>
+	<string name="content_description_confirm_password_field">Confirm password field</string>
+	<string name="content_description_email_field">Email field</string>
+	<string name="content_description_default_account">Default account</string>
+	<string name="content_description_deselect_all">Deselect all</string>
+	<string name="content_description_select_all">Select all</string>
+	<string name="content_description_delete_selection">Select all</string>
+	<string name="content_description_contact_first_name">First name</string>
+	<string name="content_description_contact_last_name">Last name</string>
+	<string name="content_description_back_call">Back to call</string>
+	<string name="content_description_send_file">Send a file</string>
+	<string name="content_description_message">Message</string>
+	<string name="content_description_unread_chat_message">Unread chat message</string>
+	<string name="content_description_transfer">Transfer</string>
+	<string name="content_description_earpiece">Earpiece</string>
+	<string name="content_description_bluetooth">Bluetooth</string>
+	<string name="content_description_call_options">Call options</string>
+	<string name="content_description_audio_route">Audio route</string>
+	<string name="content_description_exit_conference">Exit conference</string>
 </resources>