Balajii_Ch , via OnePlus 7 , Nov 15, 2019 : I couldn't figure out My my phone phone got those big marks out there.. I play PUBG mobile and since I move my thumb around those marks area.. i believe due to the mobile's heat those marks have been made.. Can we remove those marks? I tried using cleaning liquid but no use. It actually cleaned the unmark area neat and clean but the marked area didn't wipe off even a bit. Need help with this. thanks in advance.