I know I have read a post about this last week, but I can't find it in search. It has only happened to me once before today, but today this is the 3rd time I've grabbed my phone the notification light is blinking with something but the power button does not bring it out of sleep. I try volume and nothing. The only thing I have found is pulling the battery.
Next time it happens I'm going to call myself to see if the screen wakes up.
I'm thinking that 3 times in one day is very unacceptable. Does have one else have any info on this?