Overcharged battery >> burn lines??

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Saltmemore

New member
May 9, 2020
1
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Hey folks,

Brought my Nokia 7.1 to the nearest mobile shop and got my charging port replaced as the previous was loose. Later that night, burn lines appeared and continued the next day. They were on both left and right side of the phone, sometimes on the bottom.

Took it back to the shop and an hour later, they called me in and explained that it was the battery's fault. As the charging port got fixed, it must have caused the battery to overcharge and thus burn lines.

I had never had any problems with burn lines before and am asking this question if any of you know that it's a possible thing to have happened? I don't really trust the owner of the repair shop and it seems too much of a coincidence to have it happen right after they serviced my phone.

Thanks for your time!