I have an iPhone 4, and would always get all day battery life. Now it is draining 10% every 10 minutes that I use it, and it's even draining rapidly on standby. I see that my bookmarks keep trying to sync, more specifically my reading list items. And I also can't add to my reading list. I tried rebooting the phone and it won't stop attempting to sync, even turned iCloud off. Any solutions???