Error on some devices - couldn't find class 'com.google.android.gms.measurement.internal.zzz'

Question

I am working on an Android Custom Launcher. The application runs perfectly on some phones but do not start on others. On launching the application the following error occurs

Answer 1

So after a lot of searching i came to know that this problem was due to the multidexing. On some phones multidexing don't work. May be due to their Android Version. However i fixed this by introductng an application class

public class MyApplication extends Application {

    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }
}

and in menifest i entered the name in application tag like: