code: protected void onPlayServicesUnavailable(Activity context, int errorCode, boolean recoverable) {
          GoogleApiAvailability.getInstance().getErrorDialog(context, errorCode, PLAY_SERVICES_RESOLUTION_REQUEST).show();
          EasyGcm.Logger.d("This device is not supported. Error code " + errorCode + " Recoverable - " + recoverable);
      }
docs: Check the device to make sure it has the Google Play Services APK. If
  it doesn't, display a dialog that allows users to download the APK from
  the Google Play Store or enable it in the device's system settings.