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Repair information and guides for the iPhone 8 that was released on September 22, 2017. Model: A1863, A1905

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Battery drains from 40 to 25% and than in a few seconds to 1%-0%

Hello,

I have problem with my iPhone 8 battery. Since housing and charging port replacement, my iPhone starts to turn off randomly, even if battery percentage was 70%. I thought, that an original battery was damaged during the process (which surely was), so I decided to buy a new one. After replacement, everything seems to be OK, phone works perfectly at 100-50%, but around 50%, battery very fast drops to 40, then drops to 25% in a few seconds and then drops to 1% and 0%.

Should I try to replace battery again?

Where could be the problem?

Thank you for all your answers.

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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Most likely pry damage near screen / battery connector on the logic board. Perhaps some small IC components may have gotten knocked off or damaged when the cables were unplugged.

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Is there some way, how to find out, where is the problem and try to fix it?

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Look around the battery and screen connectors...look for anything that is damaged or missing. Magnification is preferable.

If you see anything damaged or missing, then it will require a micro-soldering repair.

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I did that today with magnifying glass and everything seems to be perfectly fine. No damage or broken parts at all.

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If you have a Mac, download and run Coconut Battery to get a much better picture of the condition of this battery.

https://www.coconut-flavour.com/coconutb...

Post an image of your results, please.

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Thank you for answer. I dont have Mac, I am Windows user. Is there app like this for Windows?

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Here are three alternatives for Windows users : https://coconutbattery.en.softonic.com/w...

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And what exactly I should look at in these apps?

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Post an image of your results, please.

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Andrej Pracovný účet zal eeuwig dankbaar zijn.
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