My Thunderbolt started turning off randomly, both when it's on standby and when I was using it. I don't think it's the battery because in both cases, the battery was at least 50% charged. Pressing the power button does nothing and plugging it into the charger does not yield the orange charging LED. The only solution I've come up with so far is removing the battery and reinserting it and only then will the phone turn on. Has anyone else experienced this or have any clue what's wrong? I've had this phone for about a month, and so far it's been great!