Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.

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battery shuts down on 30 40% without reaching 15

my iphone 4s suddenly shut while playing games using wifi

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My iPhone 4s has done this since it was new

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Get the battery. replaced, it's hard to find a good one though.

Lithium batteries have pretty much a best before date of 2-3 years.

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As a battery gets older it will die from what looks like a good percentage of the battery left . what your describing , running wifi and gaming at the same time is a huge power drain and if the battery is older a getting weeker it will die from 40% quickly

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It also gets heatup from rightside

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Syed Shaqeeb Shah will be eternally grateful.
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