Chosen Solution

When i turn the phone , the grey spot makes it to white!

ALSO!! i had the same problem but in hours dissaperead! And overnight became this! PLS WELP GUYS!

Hi Sorry to hear you are having a problem with your iPhone so let’s hear it fixed! a mark on the screen can be a couple different things such as Expanding battery Water marked LCD Water damage Pressure marks So chances are if you open your phone up and send us a photo of the inside we can help further If this isn’t possible check to see if the battery is spongy or pillowy ,if neither you can replace the screen and it should fix the issue Thanks :-)