I've searched and other than the "Viber" problem, I haven't seen anyone mention anything about the proximity sensor being stuck on(mine is). I tried everything I saw in the forums and saw nothing then was just searching the market and found this:
Rezound Prox Sensor Calibrator
By default, mine showed "NEAR" when the prox sensor came on, so if you change the top setting (Low Threshold) to 100(all the way to the right) then it makes the distance you need to be before the sensor recognizes you as "FAR" about 3 inches away from the phone. Fixed the issue for me, figured I'd help someone else out.
Rezound Prox Sensor Calibrator
By default, mine showed "NEAR" when the prox sensor came on, so if you change the top setting (Low Threshold) to 100(all the way to the right) then it makes the distance you need to be before the sensor recognizes you as "FAR" about 3 inches away from the phone. Fixed the issue for me, figured I'd help someone else out.