Sorry I know there are 100 threads on battery issues... but So I go to sleep with the phone next to me at 70% battery life, wake-up 2 hours later and the phones dead. This has happend twice now, before this battery life hasent been an issue. I've used the phone for about a weeks and everything was great, until two days ago (not sure what happend, I did install a 16gb SDHC card). If the 16gb SDHC card is whats causing the battery life to be good for ~2 hours unplugged with 0 usage, then this is useless.. The GPS is off, WiFi is off, signal strength is about -85dB. Facebook is set to every 3 hours Weather Every 6 Hours Exchange is set to push with a 10kb attachment limit (doesnt seem to even work). For an example I just charged the phone to 17%, unplugged it for 2m 27%, now at sub 9% battery.. Android - 56% Cell - 20% Display - 17% Phone Idle - 7% Right now this phone is as useful as a brick, i've uninstalled the weather app and a bunch of other 3rd party things that I thought could have been causing it, but this is the second time now.. My battery life sans being plugged in is around 2 hours tops, with or without using the phone. Under battery usage the android system is usually over 60%. Should I do a full reset and if so how do I go about doing that? Is there something that anyone might guess it could be?