Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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Why does my iPhone turn off when still got 70%

my iphone turns off with high battery life left, but i can put charger in for min then take it out and it will work for a bit taking battery % lower than previously turned off, any ideas how i csn fix it

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John,

Typically this is a sign of a dead or dieing battery. When lithium chemistry batteries get old, their voltage will drop off very quickly under a load (where as normally they will hold a very steady voltage even under maximum rated loads). So when you turn your phone on, the voltage begins to drop quicker than normal and this causes an unexpected shut off.

We sell the 3GS battery and have our handy guide to help you complete the swap. Hope this helps and let us know how it goes!

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john will be eternally grateful.
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