I really think those numbers aren’t as accurate as everyone thinks they are. If Apple were smart, they would’ve just gave it a green or red status. People see the battery go down to 99% and think oh no my phone is breaking!
My last iPhone stayed at 100% till the week I traded it in a year later and then it went down to 99%. You don’t really think it was at 100 % or higher for a whole year especially when I didn’t do anything special with charging other than maybe not leave it on the dashboard of my car. Just use your phone and enjoy it. You’re taking 1% off of your life by stressing about it. If you’re planning to keep the phone past three years, then the $99 for a new battery installation shouldn’t be too painful on the budget. I know they went up from $69 which kind of bums me out.