How can I ensure admob will appear in my app

Question

As we know, google requires us to use test device and test ad unit id, when we develop the app. However, I want to know that if there exists anyway that I can see the real ad, b

Answer 1

You can use actual ad unit id even for development, but your test devices should be added to the list of TEST DEVICES when you build your ad request.

If it's a valid ad unit id that you are using, you can be sure that ads will appear when you publish your apps. Also, you can check if you are getting hits for your ad unit in Adsense Dashboard.

If you want to be dead sure, you can just try to install the apk on another device, test it, and then publish it when you see the ads.