With new iOS, if you havent noticed yet, there is a new feature called widget, which is basicly the same thing as the ones in desktop operating systmes, except that it really works and is found useful by many. So install the important iPhone widgets before it becomes mainstream.
1. Location Services. Don’t allow every single app to use location services. Think before accepting if you need it, and how it’s going to affect your battery.
Stop wasting time (oversleeping) with a good but old standard iOS Clock app. Developers worldwide keep doing wonderful job with these kind of applications.