Im having an issue with the battery only in the last few days, (perhaps after 3.1.2 firmware update), where the phone battery is being used up even during sleep. Like for e.g. i had 50% battery last night before i went to sleep, woke up this morning and it was on 5%, after a couple of missed calls and a text? I have push notifications on for email, but thats never run it down this fast! I have restored the phone, and then restored from backup to no effect. Will setting up as a new phone after restore help? restore to old firmware? any one else with this issue?