Chosen Solution

Hi I have a issue that i havent heard about. My iphone 7 hade to have a new screen so i had that put in. After A day or to the screens started to have it own life. Now maybe once or twice a day the screen goes gray/black and is it until I press the off button on and off and it starts to work fine again. The screen is working fine and i have tried using an other screen thats working on an other phone and the problem keeps happening. I dont think it is the backlight when the phone dosent go all black its in grey color. Anyone had the same problem?

The replacement screen might be defective or there might be some loose/damaged cables connecting the display . Who did the repair? They should have another look at it.