I recently installed the iO6 update for my iphone and now find that I have around 4 hours standby time. Has anyone else had this happen to them? Can I remove the update from my phone?
Try a clean install and following these directions for a while.
Thanks Tallest Skil, but I can't find how to do a reinstall or to remove the upgrade.
Go to iTunes, click your device in the sidebar, and then click where it says Restore.
It'll back up, wipe, reinstall, and then put all your stuff back on.
you can just reinstall it, guide from here