My iPhone 7 screen has small/minute black horizontal lines all over the display screen
Hi there, I recently encountered an issue on my iPhone 7, while I was using it, the screen flickered a bit then these small black lines appeared all over my display... I mean the display is still working the touch response is also still working. now initially these lines automatically disappeared after a while so I thought that everything was fine but then these lines reappeared after around 48 hours. And by god's grace I have never dropped my phone till date so I guess we can rule out the possibility of breaking the internal display. What to do??? please help!!!!
iPhone 7, iOS 12