Why IOS 9.3.1 affects iPhone battery andl

I have an iPhone all nine 5 c about 1 month ago they ask me download 9.3.1 so I did. Later I realize my phone summer wasting battery a little faster. So I thought it was my battery until I have contact Apple and they did a test on my phone and said 'my battery's fine 100% I keep on searching until people say maybe it's IOS 9.3.1

I had the same problem with my 6s.  They told me the battery was fine and they have even re-installed all new software in my phone.  He always did and verizon had to send me another phone.

Tags: iPhone

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