ok so i have my sgs2 for a little over a month now and everything has been awesome until last night , i was using my phone just texting and then i set my phone down for maybe 10-15 minutes then when i hit the unlock button to use it again the screen would not light up....even holding the button would not turn on/ show the off power menu, nothing would happen....the only way to get the phone back on is to do a battery pull,,,,so i thought it was just a weird bug and let it go ...well probably 40 minutes later it did it again....the phone works fine when the display is on but it seems like when i set it down for a certain amount of time the phone turns off and wont turn on even with the power button, only after pulling out battery then the button will work,..its happened 3 times since 11 oclock last night?? has anyone else heard about this problem before? and yes the phone was fully charged but after having to do a battery pull and turning the phone back on the percentage dropped about 40 percent