was there ever a solution to this? My phone has just started exhibiting this behaviour.. If I lock the screen (so it's black) and leave it for a long time (half an hour), when I wake it up, or a call comes in and it wakes itself, the touchscreen won't respond to input for 5 - 10 seconds after the screen lights up

The phone isn't frozen, because I can still use the keyboard to do things like CTRL + BACKSPACE to see the running tasks - it's just that the touchscreen interaction has no effect

There's no lag or problem when the touchscreen does respond, it's just as if the touch digitizer is switched off for a while after the phone wakes - kinda like your computer would seem unresponsive if you unplugged the mouse..

As a workaround is there any key combination that will answer a call? I'm assuming as the keyboard still works fine from the first moment the phone wakes, that I could answer calls with the keypresses while the touchscreen is still unresponsive