Chosen Solution
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.
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.
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.
