Dark shadow top right corner of screen?
My iPhone 6S + 128gb has developed this fault since replacing the screen and home button.
I took it back to my local repair shop who did the screen replacement and they fixed it so off I go all happy and then I see screen flicker when pressing the top enter of the screen. After a few flickers the dark area returns.
I go back to the store, he fixes it again only for it to return a few hours later to a lesser extent than before.
Due to the fact that it can be free of the dark area at times I don't suspect the cathode anode or diodes
What else can this be please ?
The appearance is just like the issue on this thread
Fix was to replace the front facing camera and mic assembly
Is this a good question?