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Battery dying at 30%

Mikan1089

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Oct 13, 2011
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Aloha everyone! I was wondering if some can help? my iPhone 4 battery started dying at 20% last week and when I plug it in to charge it it resumes at 20%. Now it's starting to do it at 30%. I restored as a new device with no luck and tried calibrating the battery with no luck. Has anyone ever had this problem? Will a battery replacement fix this problem? Mahalo
 

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