I have an ipod touch, 4th generation. I was in the middle of playing a game when it froze. I ended up having to close the game. When the screen lock locked something happened...there is now a voice that repeats everything I'm trying to do, wich wasn't there before. I can't unlock my screen lock. The code involves numbers that I can't type in. Does anyone know what happened and how I can possibly resolve this problem? Thank you.