Hi all, I foolishly tried to fix my broken lock/power button today on my iPhone 4 and after I'd put everything back together again the screen doesn't work! I turn it on and all I see are lines down the screen. I checked the connectors on to the logic board and they're all fixed fine. I spent 6 hours today trying to fix it. My phone's just out of warranty, but if I were to visit a Genius and say I discovered my phone like this, would they allow me to buy a replacement? I think it's £120? Also, how would they be able to check the warranty if they can't check on the phone?