I found this tutorial how to add AdMob for iOS.How To Add AdMob Ads Into Your Existing Unity3D iOS Game
It look like it is for old version of Unity, because I don't find correct place in "AppController.mm" where I need to put code. But I found correct(hopefully) place in "DisplayManger.mm". Now I have error that I use undeclared identifier "controller" in line:
[_adBanner addSubview:controller];
How to correctly declare it to fix it.
I'm very bad in objective-c :(