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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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iPhone 8 Drains Fast and Battery Overheats When Charging

I saw a listing for a really cheap but defective iPhone 8. The seller says that the phone drains really fast and that it overheats when it’s charging. The seller also sent a photo of the battery health, stating that the maximum capacity is at 94% and that the battery is currently supporting normal peak performance.


Is the problem from the battery possibly being defective or is it a more complicated issue, such as a logic board problem? Thanks to anyone who will answer!

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If you don’t think the seller tried a new battery I would replace that first and maybe try another screen.  If it is still draining fast it will be a logic board issue and you would need the proper equipment and experience to diagnose it.

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