Hi - I had the battery replaced on my iPad Air 2 (2015) at my local phone repair / service store. I was in a hurry to pick it up and didn't check it before leaving. When I got home, the screen looked really bad. I have attached a photo. Does anyone know what's up with the screen? The store said if the problem persists, come back and see them, seeming to imply that its normal and the problem will go away in time.