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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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Battery up to 30% and then turn off, why?

I'm using my iphone 4S normally and when power reach down 30% the device turn off as if the battery is completely off. I would like to know if this issue could solved just replacing the battery.

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It should be, but if it isn't, then you need to replace the logic board.

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Replace the battery or do a hard reset hold power button and the home button together for 6 seconds the let go and press power see if that starts it.. If not trouble shoot by replacing battery

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