Being completely fed up with the lack of support Apple provides in fixing battery life issues, I have decided to downgrade from iOS 8 to iOS 7. My iPhone 5s is a little over a year old and I feel dependent on battery packs and power sources. In plain words, iOS 8 is a big pain in the butt unless it is my batter which is dying in a little more than 15 months. I download iOSc7.1.2 off the internet and backed up my data. Now if I install this version and after that restore my data from iOS8, will I be able to maintain all of my data?