Hello my dear friends! I have a problem with my almost 2 years old iPhone 5. Battery life is ridiculous! Around 3-4 hours of usage (not even heavy) and it's done. They told me to do a DFU reset setting the phone as new, but I cannot do it for two reasons: 1) my sleep button doesn't work, and this doesn't let me go in DFU. 2) I have some very important data that can't be saved using this method and I cannot loose it! So, I was wondering how to see if there's a problem with the battery itself (hardware, and not software) and I was wondering if my silicon case could be a reason (maybe it attenuates the signals or stuff decreasing the battery life?) Do you have some other advices? Thanks a lot Ps: only use wifi. Cellular data is off, Bluetooth is off. GPS pops up sometimes but not that often. App refresh is on for a few apps, 2 mail accounts in push, 25% brightness. I tried to recover the phone 5 days ago but it did not improve (at least I got extra 5 GB of storage ahah).