Battery percentage stuck at 1%

I don’t have pictures but have seen this before: there is a small component near the battery connector in the iPhone 8 that constantly gets knocked off during repair, leading to this failure.

It is an easy fix for a good microsoldering technician.

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Thanks Rany, I checked the phone in my rework lab with microscope and you are right that chip is missing and unfortunately for some reason my ZXW is not working at the moment to find out what it is, hence I was wondering if you know what the component is ?

crwdns2934271:0Mud 3, 2018crwdnd2934271:0 Bezad crwdne2934271:0

Umm, I am sick with bronchitis, not at the lab.

Besides there is no iPhone 8 on ZXW yet IIRC.

Your best bet is to look at a good board or ask someone who has a good board to measure it for you. I think there is something stupid like a resistor on the gate line? Not sure anymore.

crwdns2934271:0Mud 3, 2018crwdnd2934271:0 Rany crwdne2934271:0

I contacted everyone but no chance to find iP8 component schematic but finally a colleague from UK sent me the chip specification which is classified as a "ROHM Semiconductor".... I better not to mention the part no. at this stage to prevent confusion till I receive it and try it then I will share the details.

crwdns2934271:0Mud 5, 2018crwdnd2934271:0 Bezad crwdne2934271:0

its fixed, the chip is RV3C002UN, It took me a while because couple of pads were gone too.

crwdns2934271:0Mud 18, 2018crwdnd2934271:0 Bezad crwdne2934271:0

Bezad where you got this chip from. Looks like am stuck in same position as well

crwdns2934271:0Mud 18, 2018crwdnd2934271:0 Inder Singh crwdne2934271:0

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Thanks Rany, I checked the phone in my rework lab with microscope and you are right that chip is missing and unfortunately for some reason my ZXW is not working at the moment to find out what it is, hence I was wondering if you know what the component is ? — Bezad
Umm, I am sick with bronchitis, not at the lab.

Besides there is no iPhone 8 on ZXW yet IIRC.

Your best bet is to look at a good board or ask someone who has a good board to measure it for you. I think there is something stupid like a resistor on the gate line? Not sure anymore. — Rany
I contacted everyone but no chance to find iP8 component schematic but finally a colleague from UK sent me the chip specification which is classified as a "ROHM Semiconductor".... I better not to mention the part no. at this stage to prevent confusion till I receive it and try it then I will share the details. — Bezad
its fixed, the chip is RV3C002UN, It took me a while because couple of pads were gone too. — Bezad
Bezad where you got this chip from. Looks like am stuck in same position as well — Inder Singh

score 3 · Answer 1 · 2018-05-02T06:36:24-07:00

Ben @benjamen50

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Mtwo Perform

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crwdns2931729:0crwdne2931729:0: Mud 2, 2018

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Did you try reseating the battery cable?

It can sometimes be as simple as that as I've had a few cases where the battery ribbon cable got partially disconnected when removing the metal shield that also covers the screen cables.

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Thanks Ben for the tip, unfortunately it wasn't the the battery ribbon but a little damage to the PCB close to battery terminal which "Rany" addressed.... I am working on the logic-board and when its fixed I will share the information.

crwdns2934271:0Mud 5, 2018crwdnd2934271:0 Bezad crwdne2934271:0

In my case this was the correct solution! The battery connection to the logic-board wasn't seating correctly. I took off the screen, the securing plate, then re-seated the battery ribbon.

crwdns2934271:0Mud 11, 2023crwdnd2934271:0 nshourds crwdne2934271:0

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George Blevins @georgeblevins crwdns2934065:0crwdne2934065:0: 13 1 · Answer 2 · 2020-05-13T16:18:30-07:00

George Blevins @georgeblevins

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crwdns2931729:0crwdne2931729:0: Mud 13, 2020

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Would love to know what the fix is for this. As my phone is stuck at 0% and in constant reboot mode. Any help greatly appreciated!

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Dobrý den, jak jste to nakonec pořešil? Mám stejný problém.

crwdns2934271:0Nhl 27, 2021crwdnd2934271:0 Tomáš Čermák crwdne2934271:0

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Ian @imac6 crwdns2934065:0crwdne2934065:0: 1 · Answer 3 · 2018-06-28T11:00:16-07:00

Ian @imac6

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crwdns2931729:0crwdne2931729:0: Kho 28, 2018

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Hey @bezad53, did you ever end up snapping a picture of where the component was on the board? I have the same issue and have ordered the component listed above - just want to verify that I'm looking in the right place.

I have a pic of the logic board if you could indicate where you did your repair. Thanks!

Pic: