./tools-webrtc/android/build_aar.py --arch 'armeabi-v7a' 'arm64-v8a' 'x86' 'x86_64'

AndroidStudio Setup:
Include the libwebrtc.aar into your AndroidStudio in the following way

File -> New -> New Module -> Import .JAR/.AAR Package -> Next -> Choose the downloaded file
Then compile libwebrtc in dependencies section of your aap build.gradle file.

Example:
	dependencies {
	    compile fileTree(include: ['*.jar'], dir: 'libs')
	    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
		exclude group: 'com.android.support', module: 'support-annotations'
	    })
	    compile 'com.android.support:appcompat-v7:25.3.1'
	    compile 'com.android.support.constraint:constraint-layout:1.0.2'
	    testCompile 'junit:junit:4.12'
	    compile project(':libwebrtc')
	    compile files('libs/autobanh.jar')
	}

AppRTCMobile Demo App: https://chromium.googlesource.com/external/webrtc/+/master/webrtc/examples/androidapp	
Note: You can build the same by following instaructions at https://webrtc.org/native-code/android/

./tools-webrtc/ios/build_ios_libs.sh	

Xcode Setup:
Include WebRTC.framework in Xcode Embedded Binaries
Add WebRTC.framework/Headers in Header Search Paths of Build Settings

AppRTCMobile Demo App: https://chromium.googlesource.com/external/webrtc/+/master/webrtc/examples/objc	

Note: You can build the same by following instaructions at https://webrtc.org/native-code/ios/

WebRTC.framework is generated in Oct'2016 for X86_64 architecture
For Xcode setup follow the instructions of IOS