I bought my phone middle of December 2012. It seems that whenever it gets about 50% or less of a charge and I start to play a game or make a call or go in the browser, etc., the phone just powers down and says it needs charged. It won't let me turn it back on till I plug it back in to charge. Anyone else having this problem? Very frustrating! Not to mention, I have no phone until I can get it charged. Also, has the time changing issue been updated or fixed yet?