I'm using the version 2.0 of ADMOB library, Googleplayservices v.16 and ADMOB SDK v.11.
I also use Licensing v. 1.1, Preference Activity v. 1.01, Reflection v 1.01 and others like stringutils. Etc...
Google Console says that there are 6 instal. with Android (2.1) and 4 instal. with (2.2). Very few ( running good ? At least 9 seems yes, but how is possible? ), but I assume AdMob library as the problem because there aren't other significant libraries in my app.
I want to sinalize that in the code I use stringutils istruction MeasureMultilineTextHeight and I had to use beetween Try ... Catch because it seems not running in all versions.
I'll change minsdkVersion
Thanks Eriel, thanks Mauro also