First of all I have an Ultra I know this is the Maxx page but there is like no activity in the Ultra page. Anyways I was messing around playing a game on my phone and all of a sudden the volume goes from full blast down to zero by its self. I tried to turn it back up but had to go into settings to do it. A little bit later it did it again while looking at facebook. I was like whats going on. I go to hit the power button to time out the phone and nothing. So I held the power button for a few seconds then the ap fastboot. It have me a few options like normal power up, recovery, factory, barcode, and something else. It said vol.up selects and vol down scrolls but when I push vol up it goes down to next category and vol. down does nothing. The screen says device is LOCKED status code 0. Not sure what to do. I have only had the phone about 8-10 days now.