I was planning to get a new iphone but after seeing the new 16 and realizing I only want it for the sake of something new I decided to keep my 12 mini at least another year but get a new battery for it. I am a little concerned that they may have trouble opening the phone to service because at some point it picked up a dent in the side that has put a larger "gap" on one side of the screen than the other. There are no cracks on the screen but the whole thing seems a slightly warped. Can the battery still be replaced?