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Had my screen replaced some months ago due to a crack in the glass. Battery is now swollen and phone will no longer charge or power on. I’m not sure if the battery deterioration started before or only after getting the screen replaced. Wondering if it is likely the battery was damaged in the process of replacing the screen or if it’s an unfortunate defect in the battery that was likely there from time of purchase? Any input appreciated!

No, that is highly unlikely. The only way that would happen is if you somehow pierced the battery allowing leakage and causing it to expand. It may be from high temperatures from excessive use while charging or something like that.

Doesnot necessarily have to be pierced for the battery to be swollen. infact if your phone is More than 18 months old then most likey the battery gave up. Just change the battery and you will be fine.

Its much more likely the charging system was damaged at the same time the drop occurred that cracked your screen.

I had the same problem, changed the scream on my phone. Two weeks later battery swole up. I took my phone to Apple Store, they replaced my phone under warranty.

Can a swollen Battery cause the touch on the phone to become non-Functional. I replaced my iPhone 6+ screen with a new one. However, the issue remains. I hard reset the phone it will work for a couple seconds then everything freezes up. Is that the battery or the Logic board.