A friend of mine got an iPhone 6 Plus from Target the other day. The sales person got it all activated on AT&T, and then took it out of the box. It had a circle of dead pixels on the upper portion of the screen, about the size of a thumbprint. He could have exchanged it for a new phone right then, if they'd had one in stock, but they didn't. The sales guy told him that he could bring it to an Apple store and get a replacement that way. It was late in the evening, so he figured he'd do that the next day. Well... after he'd had the phone turned on for a while, the pixels came back to life. The display seemed OK for the rest of the evening. He turned it off, and the next morning when he turned it back on again, the pixels were still OK. My question is... how could that many pixels be dead, and then start working again? I didn't ask if there was a temperature kind of thing at work here. But the real question is, are the pixels really OK now, or is there a chance they'll die again sometime in the future?