Mobile app loses focus

Hi. I’m testing my game on a mobile device and suddenly when I’m launching from ue4 to my device the game is going the to background. I can see the splash art and the main menu but after I hit “Play” is losing focus. After I highlight all the opened apps I can see the game and I can enter again. After that I can play the game without any problems. What can be the problem? Thank you! :slight_smile: