I bought my HTC Arrive about two weeks ago and thus far I have been through 2 devices (I also had one with a bad volume button and one that would randomly reboot) that would randomly shut down in the middle of the night. I did not have them plugged in but when I woke up they were off. I powered the devices on without hooking them up to power and they both would have well over half the battery left. On the second device the first night I did not install any applications and only setup two of my email accounts (I didn't even open marketplace, zune or xbox) and it did not shut down. For the second night I re-downloaded all my applications and transfered some music from my computer. The next morning the device was powered down again and when powered on had about 90% of the battery left. I'm just wondering if anyone else has had this and if it is software related or if I somehow managed to get two bad phones with the same problem back to back (plus two other bad phones with other problems).