So i'm using 2 android sdks "facebook sdk" + "google mobile ads sdk" in my android game, but when i try to select Minimum API level 15 from the dropdown of the player settings, i can't find it there. The minimum api level is 16 and higher in Unity 2017.0 and higher. Is this a bug in the unity editor ?? Facebook sdk requires to select minimum api level 15 in order to work properly.
Thanks for your help;
This is because Unity removed support for API level 15 and below. In fact, this really didn't happen in Unity 2017.0 as you may have believed. This was done in the Unity 5.6 version.
See Unity 5.6 release note for more info on this here.
Android minimum version supported updated to 4.1 (JellyBean)
It's not a bug. Just go with API level 16.