My work phone has juts started doing this... When it's locked, after a few minutes the phone stops responding to anything. [If it's charging the light stays on even when the cable is pulled]
I've had a look at the apps and there are a lot of things I want to disable, but can't.
I'm running 4.3, no root, standard ROM. The only thing that gets it working again is pulling the battery and rebooting.
Any ideas why this is breaking now?