AdMob: Ad is showing on Emulator but not on real device?

If you follow along with the instruction for adding AdMob to your Android App and still don’t see the Ads on your device, there could be a couple of double checks in your code to do.

Android Manifest, requires these lines of code for the permissions to allow access for AdMob:

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>


Use the sample Admob App Id for testing, replace with your live App Id once you have this working:
This code goes in your MainActivity->oncreate()
//Sample Test AdMob app ID – Replace once testing commpleted with your live App Id: ca-app-pub-3940256099942544~3347511713
MobileAds.initialize(this, “ca-app-pub-3940256099942544~3347511713”);

AdView mAdView = new AdView(this);
mAdView = findViewById(;
AdRequest adRequest = new AdRequest.Builder().build();

Very interesting video about setting up the AdMob and covers testing and what should be coded to successfully show test ads:

AdMob Android tutorial – Placing Banner Ads