My iPhone 4S began losing battery life at a crazy speed.

My IPhone 4s had a great battery life until I upgraded this 6.1.2 download. It's gone from holding a charge all day to less than 4 hours! What is going on? Can some help?

Go ahead and try completely restoring the phone. When it come time to setting up the phone, do NOT restore from a previous back up. Set it up as a new phone and sync all of your contacts/data back to it. Restoring from a backup will only put the same issue back on. Worst case scenario, make a genius bar reservation. If the phone is under warranty, it can be swapped out. Good luck to you!

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