Problem with HTC Sensation 4G from T-Mobile.?

Mark

Active member
Usually when I go to bed, I have my HTC Sensation on the table next to me. A couple of times when I wake up, I notice that my phone's battery life is completely depleted and the phone itself is turned off. Originally, I thought this was because the alarm clock kept ringing and I wouldn't wake up.
But today, however, the alarm clock was off, nothing was running, etc. and I wake up to find the battery completely obliterated again. Does anyone else have this problem? How does this happen? Is it a battery problem or phone problem? Whom should I contact? Thanks.
 
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