Just curious if anyone else has seen this: Your S2 is on all day,...just kind of hanging out in "idle mode"...leave for a while and then come back to it (knowing the battery is full) and the screen is black, the phone unresponsive. Not sure what the deal is. I initially thought I'd perhaps left a battery draining app on (GPS or Bluetooth, etc) but that was not the case. I plugged the charger in and the phone beeped when it recognized the charger had been inserted...but nothing on the screen...no battery charging icon. Nuttin. In each case, I've had to remove the battery and re-insert and then it comes back to life just fine...and shows what I suspected...a FULL battery charge. This seems to happen very randomly, ex...phone was on and fine,...went to do my workout...came back an hour later....unresponsive phone. Just curious. Thanks for any pointers.