I've been having this extremely annoying problem over the past week.
Every few hours my SGS2 screen would turn on by itself and the signal indicator would change from the usual bars to the circle with a diagonal line across, indicating no service. The phone would then go back to sleep. The signal quality in my area is superb and I do not have any connectivity problems, and HSPA+ speeds are decent. Other than it being annoying for the screen to be turning on by itself every few hours, it is also screwing with my Llama location profiles as it thinks that I have left or entered my area and carrying out the associated actions.
I've tried stock KG2, and stock KG3 both with wipes but no dice.
I'm currently on stock KG3, unrooted.
Is anyone else experiencing this?