ronald1985This is correct. It only show on the photo from other device. And it has been reported here already as a result of playing PUBG.
I think what OPC mean is take a photo from another phone and post it here. If it isn't appearing on screenshots, then it is definately screen burn where a static object have been left for too long in the same place. Common issues with screens not just on phones, but with TVs and monitors too.