iOS 9 Considerations
App Transport Security
So that your application is not affected by this new measure which Apple has implemented, you have to add the following lines to your "Info.plist" file:
If you want to see more documentation, see App Transport Security (ATS).
Bitcode in Xcode 7
The Google Mobile Ads SDK does not yet support enabling bitcode. You will need to disable this setting in your app by navigating to the target or project Build Settings. Under the Build Options section, set Enable Bitcode to No.
If you want to see more documentation, see BitCode.