Same Admob ad unit ID for different apps?

Question

Context

We are trying to integrate admob inside our Apps, we have 25 apps which are mainly livewallpapers.

When we created an ad un

Answer 1

Using multiple ad units are not recommended as it will lead to incorrect statistics on your app usage and user engagement. So, it's better to use different ad units for different activities and for the second part of the question having multiple ad-banners in a single activity is against the google admob guidelines. Using a same ad unit id or different does not affect your earning so if you're concerned with the revenue generated by ad units the you can use multiple ad units too. Check this thread for more info: http://forums.makingmoneywithandroid.com/advertising-networks/34763-native-ads-banners-admob-policy.html