I've had my htc one for almost a year now. I'm with AT&T if that matters but last night I was using it and it froze up and cut off and I've tried everything. It will not cut back on I've did the light source trick that everyone says worked it let it sit all night on the charger. I did the volume+power button. Still nothing, I love this phone I really hope I don't have to replace it. Tips ?