It is working fine in PIE and mobile preview the only difference is that in Mobile Preview the lighting looks different.
I am thinking that the problem is in my phone, because as i said in the 1st post it is old and cheap, but as you can see from the screenshots my so called game is not much of a thing.
Here are the screenshots:
PIE:
and the Mobile Preview:
I"ve tried to run the Tappy Chicken from the App store and had the same problem, tried 2D Side Scroller template and had the same issue - splash screen with “your splash screen goes here” and the unreal engine logo in the corner.