iPhone 6 won’t turn on after battery replacement

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iPhone 6

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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Jacob Morrison @jjapmorrizon

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Posted: Aug 3, 2018

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iPhone 6 won’t turn on after battery replacement

Hi my iPhone 6 white on silver recently died and I can’t figure out why. I was doing a normal battery replacement and that was it I made sure the right screws were in there places and didn’t plug the battery in till the screen was reconnected. I took it off to make it easier to take the old battery out. I checked voltages and everything is turning out normal. But one perculiar thing is that it is still recognized in dfu mode but when I try to restore it it fails instantly. I thought maybe corrupt firmware but turns out more then that. Any help is appreciated cheers

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I have tried the OG battery and 2 new batterys

Aug 8, 2018 by Jacob Morrison

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Minho @refectio

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Posted: Aug 3, 2018

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It appears like you took all the necessary precautions however something went wrong. You say the voltages check out…can you share what voltage you measured on the replacement battery?

Go back and do a good visual inspection, preferably with magnification, of the connectors on the logic board and the surrounding areas. Look for damaged pins, debris or missing or partially dislodged components. If you see anything doubtful, come back and post pictures.

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So I checked around and see nothing when I measure board voltages through the pad and a ground lug I get around 3.7 and up I have tried 2 battery’s and nothing. Could you explain why it only shows up in dfu mode thanks

Aug 4, 2018 by Jacob Morrison

Oh and I was wondering if the number on the battery had to be the same. The apple battery is comepleatly destroyed but the phone powered on before doing the battery. The number I am talking about is the apn number I saw the apple one had different numbers but both with 616 at the start

Aug 4, 2018 by Jacob Morrison

The APN doesn't matter. As for the voltage, 3.7V on the battery is fine for proper bootup. At this point, you should consider having the phone looked at by a micro-soldering repair tech as the problem is most likely at the board level.

Aug 6, 2018 by Minho

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So I checked around and see nothing when I measure board voltages through the pad and a ground lug I get around 3.7 and up I have tried 2 battery’s and nothing. Could you explain why it only shows up in dfu mode thanks — Jacob Morrison
Oh and I was wondering if the number on the battery had to be the same. The apple battery is comepleatly destroyed but the phone powered on before doing the battery. The number I am talking about is the apn number I saw the apple one had different numbers but both with 616 at the start — Jacob Morrison
The APN doesn't matter. As for the voltage, 3.7V on the battery is fine for proper bootup. At this point, you should consider having the phone looked at by a micro-soldering repair tech as the problem is most likely at the board level. — Minho