I bought the LG Revolution phone 2 1/2 weeks ago and since then twice when I have not been using it, it shuts off by itself and does not power back up until I realize it is off and then I hold down the power key to restart it. It also turns off in the middle of using an app but then restarts itself. Is this a known glitch or is something wrong with this particular phone? Since I am after the 2 week mark, can I exchange it? Or am I out $200 for an issue that isn't my fault?