diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 42bd8ad05..c2fb66977 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -66,7 +66,6 @@
 
     <application
         android:icon="@mipmap/ic_launcher"
-        android:roundIcon="@mipmap/ic_launcher_round"
         android:label="@string/app_name"
         android:largeHeap="true">
         <activity
diff --git a/res/drawable-xhdpi/contacts_sip_default.png b/res/drawable-xhdpi/contacts_sip_default.png
index 2a89067f0..e1cc47bc9 100644
Binary files a/res/drawable-xhdpi/contacts_sip_default.png and b/res/drawable-xhdpi/contacts_sip_default.png differ
diff --git a/res/drawable-xhdpi/contacts_sip_selected.png b/res/drawable-xhdpi/contacts_sip_selected.png
index 61dd82f65..08e20c15f 100644
Binary files a/res/drawable-xhdpi/contacts_sip_selected.png and b/res/drawable-xhdpi/contacts_sip_selected.png differ
diff --git a/res/drawable-xhdpi/dialer_background.png b/res/drawable-xhdpi/dialer_background.png
index fc750d8b2..ccb0eedd9 100644
Binary files a/res/drawable-xhdpi/dialer_background.png and b/res/drawable-xhdpi/dialer_background.png differ
diff --git a/res/drawable-xhdpi/linphone_logo.png b/res/drawable-xhdpi/linphone_logo.png
index f7a9f7545..ad50cfade 100644
Binary files a/res/drawable-xhdpi/linphone_logo.png and b/res/drawable-xhdpi/linphone_logo.png differ
diff --git a/res/drawable-xhdpi/linphone_notification_icon.png b/res/drawable-xhdpi/linphone_notification_icon.png
index fa36e433e..533a93450 100644
Binary files a/res/drawable-xhdpi/linphone_notification_icon.png and b/res/drawable-xhdpi/linphone_notification_icon.png differ
diff --git a/res/drawable-xhdpi/linphone_user.png b/res/drawable-xhdpi/linphone_user.png
index 3abde596c..f27bfd6f6 100644
Binary files a/res/drawable-xhdpi/linphone_user.png and b/res/drawable-xhdpi/linphone_user.png differ
diff --git a/res/drawable-xhdpi/splashscreen.png b/res/drawable-xhdpi/splashscreen.png
index a02ddb045..fccc3641d 100644
Binary files a/res/drawable-xhdpi/splashscreen.png and b/res/drawable-xhdpi/splashscreen.png differ
diff --git a/res/layout-land/about.xml b/res/layout-land/about.xml
index d1c2d9d54..21de52645 100644
--- a/res/layout-land/about.xml
+++ b/res/layout-land/about.xml
@@ -64,6 +64,7 @@
             <TextView
                 android:text="@string/app_name"
                 style="@style/font15"
+                android:visibility="gone"
                 android:paddingTop="5dp"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -72,6 +73,7 @@
             <TextView
                 android:text="@string/app_description"
                 style="@style/font3"
+                android:visibility="gone"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"/>
diff --git a/res/layout-land/launch_screen.xml b/res/layout-land/launch_screen.xml
index df3c72964..e8eb6f9ff 100644
--- a/res/layout-land/launch_screen.xml
+++ b/res/layout-land/launch_screen.xml
@@ -20,6 +20,7 @@
 		<TextView
 			android:text="@string/app_name"
 			style="@style/font21"
+            android:visibility="gone"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
 			android:layout_marginTop="5dp"
@@ -28,6 +29,7 @@
 		<TextView
 			android:text="@string/app_description"
 			android:textSize="28sp"
+            android:visibility="gone"
 			android:textColor="@color/colorA"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
diff --git a/res/layout/about.xml b/res/layout/about.xml
index e2622897a..dbd46727b 100644
--- a/res/layout/about.xml
+++ b/res/layout/about.xml
@@ -58,6 +58,7 @@
         <TextView
             android:text="@string/app_name"
             style="@style/font22"
+            android:visibility="gone"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="10dp"
@@ -66,6 +67,7 @@
         <TextView
             android:text="@string/app_description"
             style="@style/font2"
+            android:visibility="gone"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"/>
diff --git a/res/layout/launch_screen.xml b/res/layout/launch_screen.xml
index fb691d241..adcc9b998 100644
--- a/res/layout/launch_screen.xml
+++ b/res/layout/launch_screen.xml
@@ -19,6 +19,7 @@
 		<TextView
 			android:text="@string/app_name"
 			style="@style/font21"
+            android:visibility="gone"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
 			android:layout_marginTop="20dp"
@@ -27,6 +28,7 @@
 		<TextView
 			android:text="@string/app_description"
 			android:textSize="28sp"
+            android:visibility="gone"
 			android:textColor="@color/colorA"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
diff --git a/res/mipmap-anydpi-v26/ic_launcher.xml b/res/mipmap-anydpi-v26/ic_launcher.xml
deleted file mode 100644
index 4ae7d1237..000000000
--- a/res/mipmap-anydpi-v26/ic_launcher.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@mipmap/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>
\ No newline at end of file
diff --git a/res/mipmap-anydpi-v26/ic_launcher_round.xml b/res/mipmap-anydpi-v26/ic_launcher_round.xml
deleted file mode 100644
index 4ae7d1237..000000000
--- a/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@mipmap/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>
\ No newline at end of file
diff --git a/res/mipmap-hdpi/ic_launcher.png b/res/mipmap-hdpi/ic_launcher.png
index d8b1b9db8..af7722189 100644
Binary files a/res/mipmap-hdpi/ic_launcher.png and b/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/res/mipmap-hdpi/ic_launcher_background.png b/res/mipmap-hdpi/ic_launcher_background.png
deleted file mode 100644
index d05b2f383..000000000
Binary files a/res/mipmap-hdpi/ic_launcher_background.png and /dev/null differ
diff --git a/res/mipmap-hdpi/ic_launcher_foreground.png b/res/mipmap-hdpi/ic_launcher_foreground.png
deleted file mode 100644
index 6940bb70b..000000000
Binary files a/res/mipmap-hdpi/ic_launcher_foreground.png and /dev/null differ
diff --git a/res/mipmap-hdpi/ic_launcher_round.png b/res/mipmap-hdpi/ic_launcher_round.png
deleted file mode 100644
index b1736e316..000000000
Binary files a/res/mipmap-hdpi/ic_launcher_round.png and /dev/null differ
diff --git a/res/mipmap-mdpi/ic_launcher.png b/res/mipmap-mdpi/ic_launcher.png
index 4d25b6db5..4bf908cd7 100644
Binary files a/res/mipmap-mdpi/ic_launcher.png and b/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/res/mipmap-mdpi/ic_launcher_background.png b/res/mipmap-mdpi/ic_launcher_background.png
deleted file mode 100644
index a976fd84d..000000000
Binary files a/res/mipmap-mdpi/ic_launcher_background.png and /dev/null differ
diff --git a/res/mipmap-mdpi/ic_launcher_foreground.png b/res/mipmap-mdpi/ic_launcher_foreground.png
deleted file mode 100644
index c1087a7a7..000000000
Binary files a/res/mipmap-mdpi/ic_launcher_foreground.png and /dev/null differ
diff --git a/res/mipmap-mdpi/ic_launcher_round.png b/res/mipmap-mdpi/ic_launcher_round.png
deleted file mode 100644
index c89275fef..000000000
Binary files a/res/mipmap-mdpi/ic_launcher_round.png and /dev/null differ
diff --git a/res/mipmap-xhdpi/ic_launcher.png b/res/mipmap-xhdpi/ic_launcher.png
index 7c0c8055c..7e717e4d6 100644
Binary files a/res/mipmap-xhdpi/ic_launcher.png and b/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/res/mipmap-xhdpi/ic_launcher_background.png b/res/mipmap-xhdpi/ic_launcher_background.png
deleted file mode 100644
index 98c831de5..000000000
Binary files a/res/mipmap-xhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/res/mipmap-xhdpi/ic_launcher_foreground.png b/res/mipmap-xhdpi/ic_launcher_foreground.png
deleted file mode 100644
index 8f722f9bc..000000000
Binary files a/res/mipmap-xhdpi/ic_launcher_foreground.png and /dev/null differ
diff --git a/res/mipmap-xhdpi/ic_launcher_round.png b/res/mipmap-xhdpi/ic_launcher_round.png
deleted file mode 100644
index d67ff226e..000000000
Binary files a/res/mipmap-xhdpi/ic_launcher_round.png and /dev/null differ
diff --git a/res/mipmap-xxhdpi/ic_launcher.png b/res/mipmap-xxhdpi/ic_launcher.png
index b364380f0..95b57bf78 100644
Binary files a/res/mipmap-xxhdpi/ic_launcher.png and b/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/res/mipmap-xxhdpi/ic_launcher_background.png b/res/mipmap-xxhdpi/ic_launcher_background.png
deleted file mode 100644
index baa7aa0ba..000000000
Binary files a/res/mipmap-xxhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/res/mipmap-xxhdpi/ic_launcher_foreground.png b/res/mipmap-xxhdpi/ic_launcher_foreground.png
deleted file mode 100644
index 1cb45a657..000000000
Binary files a/res/mipmap-xxhdpi/ic_launcher_foreground.png and /dev/null differ
diff --git a/res/mipmap-xxhdpi/ic_launcher_round.png b/res/mipmap-xxhdpi/ic_launcher_round.png
deleted file mode 100644
index 16045ffa1..000000000
Binary files a/res/mipmap-xxhdpi/ic_launcher_round.png and /dev/null differ
diff --git a/res/mipmap-xxxhdpi/ic_launcher.png b/res/mipmap-xxxhdpi/ic_launcher.png
index 3f468bcb8..05c036329 100644
Binary files a/res/mipmap-xxxhdpi/ic_launcher.png and b/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/res/mipmap-xxxhdpi/ic_launcher_background.png b/res/mipmap-xxxhdpi/ic_launcher_background.png
deleted file mode 100644
index c3a84f539..000000000
Binary files a/res/mipmap-xxxhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/res/mipmap-xxxhdpi/ic_launcher_foreground.png b/res/mipmap-xxxhdpi/ic_launcher_foreground.png
deleted file mode 100644
index 16fc7e6f0..000000000
Binary files a/res/mipmap-xxxhdpi/ic_launcher_foreground.png and /dev/null differ
diff --git a/res/mipmap-xxxhdpi/ic_launcher_round.png b/res/mipmap-xxxhdpi/ic_launcher_round.png
deleted file mode 100644
index 54b7defbf..000000000
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