Chosen Solution
I replaced my iPhone SE 2020 battery and followed the ifixit guide, and now it gets hot and has a terrible performance drop. I have tried factory resetting and unplugging and repluging every connector on the phone (even ones I didn’t touch during the replacement). Here are some 3DMark scores:
Latest is the one I just took and as you could see, it is abysmal compared to the average:
Edit: on a cold boot it runs as expected but after a few minutes it heats up and throttles. Edit 2: Coconutbattery
Download coconut battery on a computer and plug your iPhone in and you can view the health. You most likely have a bad quality battery. If you have the old battery put that back in and see if you are having the same issues https://www.coconut-flavour.com/coconutb…
