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Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

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iPhone 6 Dying at 4% after battery replacement!

I have an iPhone 6 and it randomly started to bootloop.I knew it was a battery issue, So I went into battery health and it was just loading.So I went to the same place I got my phone battery replace and they replaced it again.Everything was going great until my iPhone was at 4% and it randomly died.I plugged it in but instead of showing the low battery logo it showed the apple logo and it was at 4% instead of 1%.What should I do?

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Have You calibrated the battery?

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Try calibrating the battery

Run it down until it shuts off,
Then charge it up to 100% uninterrupted then keep it plugged in for 2 more hours,
Run it down till it shuts down,
And finally, charge it uninterrupted to 100%

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7 Comments:

I was going to mention calibrating the battery as above but I’d run it down to 10% and then charge again rather than letting it die. But do what @beanman56 says.

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@strongbow - It’s very necessary for the calibration to be done completely as it’s said,

Otherwise it’s probably gonna be the same

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To be honest, they don't need calibrated at all. Calibration was for the old nickel based batteries. The newer lithium based batteries don't need calibrated. They are basically plug and play. I wouldn't worry about dying at 4%, it should work itself out over a few charges.

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@strongbow - Then explain why ifixit says to calibrate the battery

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Ask them? I’m not trying to explain someone else’s mistakes.

https://discussions.apple.com/thread/789...

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