I got a third party replacement battery in my iPhone. The battery works just fine and the reason is simple, I no longer live in the US, where the phone was purchased, and if I want to keep my 2 eSIM slots, then I can't get the phone fixed in Hong Kong. Anyone who thinks Apple is very convenient has never lived in multiple countries, imo.

But that's not the worst of it. It took me some time to realize this, but when I wanted to see why my battery was draining so fast one day (I suspect Youtube has a long standing bug that causes it to go turbo drain mode for some reason, the app is incredibly poorly programmed and leaks memory over time, if you didn't know).

But lo and behold, I couldn't see the per-app battery usage breakdown! Why is that? Turns out Apple disables it if it can't detect a third party battery. Why? I'm sure someone will come and try to defend it, but if you do, you better come with an EE degree and math. To me, it looks like a punishment for not being able to go back to USA within my warranty period to replace my phone's battery which was down to 75% capacity.