title: Xamarin app deploys on android device but it only runs in the background
body: <p>I made an app in Xamarin Studio that works perfectly inside any emulator, but when I try to run it on an android phone (api level 16) or android tablet (api level 15) the program starts but it automatically goes in the background. When I try to reach for it, it tries to bring it on screen, but fails, and I am back at my home screen.</p>
  
  <p>Any ideea what this misbehaviour even means? I have no errors, no warnings whatsoever.</p>