iPhone 12 will not update after battery replacement
I changed the batteries on 3 iPhone 12's using good quality batteries from. 2 of the phones will not update to the latest IOS.
Because of the square edge design of the iPhone 12 and the new glue being used, I was concerned about how I would get the screens off without them cracking, so I heated the phones up to 90 degrees, used a pry tool to get the screen out of the frame slightly and then used Isopropanol to degenerate the glue.
I did not disconnect the screens when I did the battery replacement.
Could the Isopropanol be trapped in the phone causing some issues or is this because of the battery, which I doubt. The third phone seems to be ok.
Is this a good question?