Chosen Solution
So I had the screen repaired a month ago and I dropped it on its power button side about 6 inch height. The screen started flickering showing after images for about 10 seconds and then everything returns to normal like no flickering at all. Everything is fine including the touch and pixels except for the annoying flicker. Not sure if this is relevant but when I plugged it in and tried to copy the photos in the pc, whenever it flickers, error occured. It also flickers during a restart the one with the apple logo.
I Think you Should Replace your iPhone’s screen. This happened to my iPhone 5s. The Repair will Be easy just Remember to NOT BEND THE SCREEN MORE THAN 90 DEGREES. If you need help with your repair use iFixit’s Guide they are your best friend.
