I have had my phone "lock" up either coming back from having the display turned off or also when running various apps like watching a youtube video, or playing a game and the phone touch screen stops responding completely. The volume and power button still function but when you have locked the phone with the power button bringing it back up dosn't work. The only soultion is to pull the battery, which i have done 8 times today. I went in to a vz store and they said it was a know issue and would be a new release soon. Are there other people out there with similar issues?