My iPhone 5 battery became 58% after 7 hours

Help! It was 100% just now! I did not use iCloud and my brightness is low. It used to last at least one day or two! For the first time it drains. When I was using my phone at 100%, about 1 min or less, it became 99% but now it became about 3-4 mins per 1% less. Help me! It was great when I bought it. I bought it on December 2012.

Wow! Same thing happened to my. IPhone 5 too. I even bough it in December 2012. Okay, so what you can do is disable push mail from settings -> mail, contacts, calendars. Another thing is to delete your Microsoft exchange mail account if you have one. The last thing I know is after its fully charged, restart your phone and it may temporarily fix your problem. What I did was reset all settings on my phone and I'm not sure if it is working. But it looks like it.

Best of luck!

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