Mine just went into a persistent reboot loop. Happened when I turned on my bluetooth headset. I took the battery out and when I put it back in, it immediately started rebooting over and over again. I took the battery out and connected the phone with no battery to computer with usb. Got one green blink fro the LED. Then I put the battery in. This time it didn't automatically come on and when I turned it on it booted right up as normal. Don't know how or why, but I wanted to share my experience.