diff --git a/library.patch b/library.patch
new file mode 100644
index 000000000..96b2ce2a3
--- /dev/null
+++ b/library.patch
@@ -0,0 +1,361 @@
+diff --git a/AndroidManifest.xml b/AndroidManifest.xml
+index 950aa71e..cc615068 100755
+--- a/AndroidManifest.xml
++++ b/AndroidManifest.xml
+@@ -9,309 +9,4 @@
+         android:minSdkVersion="14"
+         android:targetSdkVersion="23"/>
+ 
+-    <!-- Permissions for Push Notification -->
+-    <!--<permission
+-        android:name="org.linphone.permission.C2D_MESSAGE"
+-        android:protectionLevel="signature"/> GCM permission--> <!-- Change package ! -->
+-    <!--<uses-permission android:name="org.linphone.permission.C2D_MESSAGE"/> GCM permission--> <!-- Change package ! -->
+-    <!--<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/> GCM permission-->
+-    <uses-permission android:name="android.permission.INTERNET"/>
+-    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
+-    <uses-permission android:name="android.permission.READ_CONTACTS"/>
+-    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
+-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+-    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+-    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
+-    <uses-permission android:name="android.permission.CALL_PHONE"/>
+-    <!-- Needed to allow Linphone to install on tablets, since android.permission.CALL_PHONE implies android.hardware.telephony is required -->
+-    <uses-feature
+-        android:name="android.hardware.telephony"
+-        android:required="false"/>
+-
+-    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+-    <uses-permission android:name="android.permission.VIBRATE"/>
+-    <uses-permission android:name="android.permission.CAMERA"/>
+-    <!-- Needed to allow Linphone to install on tablets, since android.permission.CAMERA implies android.hardware.camera and android.hardware.camera.autofocus are required -->
+-    <uses-feature
+-        android:name="android.hardware.camera"
+-        android:required="false"/>
+-
+-    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
+-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+-    <!-- Needed to store received images if the user wants to -->
+-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+-    <!-- Needed to use our own Contact editor -->
+-    <uses-permission android:name="android.permission.WRITE_CONTACTS"/>
+-    <!-- Needed to route the audio to the bluetooth headset if available -->
+-    <uses-permission android:name="android.permission.BLUETOOTH"/>
+-    <uses-permission android:name="android.permission.BROADCAST_STICKY"/>
+-    <!-- Needed to pre fill the wizard email field (only if enabled in custom settings) -->
+-    <uses-permission android:name="android.permission.GET_ACCOUNTS"/>
+-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+-    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"/>
+-    <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
+-    <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/>
+-    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
+-    <!-- Needed for in-app purchase -->
+-    <!-- <uses-permission android:name="com.android.vending.BILLING"/> -->
+-    <!-- Needed for overlay widget -->
+-    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+-
+-    <supports-screens
+-        android:anyDensity="true"
+-        android:largeScreens="true"
+-        android:normalScreens="true"
+-        android:smallScreens="true"
+-        android:xlargeScreens="true"/>
+-
+-    <application
+-        android:allowBackup="true"
+-        android:icon="@mipmap/ic_launcher"
+-        android:label="@string/app_name"
+-        android:largeHeap="true">
+-        <activity
+-            android:name=".LinphoneLauncherActivity"
+-            android:exported="true"
+-            android:label="@string/app_name"
+-            android:theme="@style/NoTitle"
+-            android:windowSoftInputMode="adjustPan|stateHidden">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-
+-                <category android:name="android.intent.category.LAUNCHER"/>
+-            </intent-filter>
+-            <intent-filter>
+-                <action android:name="android.intent.action.CALL"/>
+-                <action android:name="android.intent.action.CALL_PRIVILEGED"/>
+-
+-                <category android:name="android.intent.category.DEFAULT"/>
+-
+-                <data android:scheme="tel"/>
+-                <data android:scheme="sip"/>
+-                />
+-            </intent-filter>
+-            <intent-filter>
+-                <action android:name="android.intent.action.SENDTO"/>
+-
+-                <category android:name="android.intent.category.DEFAULT"/>
+-
+-                <data android:scheme="sip"/>
+-                <data android:scheme="imto"/>
+-            </intent-filter>
+-            <intent-filter>
+-                <data android:mimeType="@string/sync_mimetype"/> <!-- Change package in res/values/non_localizable_custom.xml ! -->
+-                <action android:name="android.intent.action.VIEW"/>
+-
+-                <category android:name="android.intent.category.BROWSABLE"/>
+-                <category android:name="android.intent.category.DEFAULT"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".LinphoneActivity"
+-            android:launchMode="singleTask"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".CallIncomingActivity"
+-            android:launchMode="singleTop"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".CallOutgoingActivity"
+-            android:launchMode="singleTop"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".CallActivity"
+-            android:launchMode="singleTop"
+-            android:theme="@style/FullScreen">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-
+-            <!--
+-            <intent-filter>
+-                <action android:name="android.intent.action.VIEW" />
+-                <data android:mimeType="audio/*" />
+-                <data android:mimeType="video/*" />
+-                <category android:name="android.intent.category.DEFAULT" />
+-            </intent-filter>
+-            -->
+-        </activity>
+-        <activity
+-            android:name=".assistant.AssistantActivity"
+-            android:screenOrientation="behind"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".purchase.InAppPurchaseActivity"
+-            android:screenOrientation="nosensor"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".assistant.RemoteProvisioningLoginActivity"
+-            android:screenOrientation="nosensor"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".assistant.RemoteProvisioningActivity"
+-            android:screenOrientation="nosensor"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-            <intent-filter>
+-                <data android:scheme="linphone-config"/> <!-- Change if needed -->
+-                <action android:name="android.intent.action.VIEW"/>
+-
+-                <category android:name="android.intent.category.BROWSABLE"/>
+-                <category android:name="android.intent.category.DEFAULT"/>
+-            </intent-filter>
+-        </activity>
+-
+-        <service
+-            android:name=".LinphoneService"
+-            android:label="@string/service_name"
+-            android:stopWithTask="false"/>
+-        <service
+-            android:name=".sync.SyncService"
+-            android:exported="true">
+-            <intent-filter>
+-                <action android:name="android.content.SyncAdapter"/>
+-            </intent-filter>
+-
+-            <meta-data
+-                android:name="android.content.SyncAdapter"
+-                android:resource="@xml/syncadapter"/>
+-            <meta-data
+-                android:name="android.provider.CONTACTS_STRUCTURE"
+-                android:resource="@xml/contacts"/>
+-        </service>
+-        <service android:name=".sync.AuthenticationService">
+-            <intent-filter>
+-                <action android:name="android.accounts.AccountAuthenticator"/>
+-            </intent-filter>
+-
+-            <meta-data
+-                android:name="android.accounts.AccountAuthenticator"
+-                android:resource="@xml/authenticator"/>
+-        </service>
+-
+-        <receiver android:name=".NetworkManager">
+-            <intent-filter>
+-                <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
+-            </intent-filter>
+-        </receiver>
+-        <receiver
+-            android:name=".BluetoothManager"
+-            android:enabled="false">
+-        </receiver>
+-        <receiver android:name=".BootReceiver">
+-            <intent-filter>
+-                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+-            </intent-filter>
+-            <intent-filter>
+-                <action android:name="android.intent.action.ACTION_SHUTDOWN"/>
+-            </intent-filter>
+-        </receiver>
+-        <receiver android:name=".PhoneStateChangedReceiver">
+-            <intent-filter>
+-                <action android:name="android.intent.action.PHONE_STATE"/>
+-            </intent-filter>
+-        </receiver>
+-
+-        <!-- This one needs to be registered from application -->
+-        <receiver android:name=".KeepAliveReceiver"/>
+-
+-        <!-- Needed for push notification -->
+-        <!--<receiver
+-            android:name=".gcm.GCMReceiver"
+-            android:permission="com.google.android.c2dm.permission.SEND">
+-            <intent-filter>
+-                <action android:name="com.google.android.c2dm.intent.RECEIVE"/>
+-                <action android:name="com.google.android.c2dm.intent.REGISTRATION"/>
+-
+-                <category android:name="org.linphone"/>--> <!-- Change package ! -->
+-            <!--</intent-filter>
+-        </receiver>
+-
+-        <service android:name=".gcm.GCMService"/>-->
+-
+-        <service android:name=".firebase.FirebaseIdService">
+-            <intent-filter>
+-                <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
+-            </intent-filter>
+-        </service>
+-
+-        <service
+-            android:name=".firebase.FirebaseMessaging">
+-            <intent-filter>
+-                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
+-            </intent-filter>
+-        </service>
+-
+-        <activity
+-            android:name=".tutorials.TutorialLauncherActivity"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".tutorials.TutorialBuddyStatusActivity"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".tutorials.TutorialChatRoomActivity"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".tutorials.TutorialHelloWorldActivity"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".tutorials.TutorialRegistrationActivity"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity
+-            android:name=".tutorials.TutorialCardDavSync"
+-            android:theme="@style/NoTitle">
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-            </intent-filter>
+-        </activity>
+-        <activity android:name=".LinphoneGenericActivity">
+-        </activity>
+-    </application>
+-
+ </manifest>
+diff --git a/build.gradle b/build.gradle
+index 402368a6..d7835538 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -25,7 +25,7 @@ buildscript {
+   }
+ }
+ 
+-apply plugin: 'com.android.application'
++apply plugin: 'com.android.library'
+ 
+ dependencies {
+   compile fileTree(dir: 'libs', include: '*.jar')
+@@ -44,7 +44,7 @@ android {
+   defaultConfig {
+     compileSdkVersion 23
+     buildToolsVersion "25.0.2"
+-    applicationId getPackageName()
++    //applicationId getPackageName()
+     multiDexEnabled true
+   }
+ 
+@@ -57,17 +57,17 @@ android {
+ 
+   // Signing
+   signingConfigs {
+-    release {
+-      storeFile file(RELEASE_STORE_FILE)
+-      storePassword RELEASE_STORE_PASSWORD
+-      keyAlias RELEASE_KEY_ALIAS
+-      keyPassword RELEASE_KEY_PASSWORD
+-    }
++    //release {
++      //storeFile file(RELEASE_STORE_FILE)
++      //storePassword RELEASE_STORE_PASSWORD
++      //keyAlias RELEASE_KEY_ALIAS
++      //keyPassword RELEASE_KEY_PASSWORD
++    //}
+   }
+ 
+   buildTypes {
+     release {
+-      signingConfig signingConfigs.release
++      signingConfig null//signingConfigs.release
+     }
+   }
+