I am losing Around 40% of my battery per hour while browsing the internet on 4g, iPhone 5, extra ios7 settings (background app, etc.) turned off. People seem to recommend restoring the phone as NEW... Is that literal, as in, plan to lose everything, or does it mean restore from iCloud backup? Is there a way to download contacts/etc. from iCloud without doing the full restore from the cloud? Hope this makes sense.