My iPhone 5 shuts down with a 10% charge remaining, is there a fix?

After my recent software upgrade my iPhone 5 shuts down with 10% charge remaining. This has never happened before. Is there a fix?

The battery gauge probably needs to be recalibrated. It "thinks" there is more charge in the battery than the battery thinks there is.
When it shuts off charge for just a minute or two, then restart (hold HOME and SLEEP until an Apple logo appears). Deliberately run the battery down until the phone shuts off at 1%. If it shuts off above 1% repeat the above until you get to 1%. Then charge for 4 hours with the wall adapter without using the phone. This process will recalibrate the battery gauge.
To prevent this from happening again about once a month run the battery all the way down to 1%, then continue until the phone shuts off. Apple recommends this in their battery help article, but they don't say why you should do it. The have some hokum about "keeping the electrons moving." Honestly! The iPad battery tip gives the correct reason.

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