Chosen Solution
I have this 12 mini iPhone that I crushed the screen on… So I bought a (cheap Chinese OLED) replacement screen and installed it myself, but it seems like my battery life is much worse now. It is an OLED, but is it possible that the cheap OLED’s are taking more battery power than the original screen? It’s not really a battery “drain”… If I don’t use the phone it’s fine, but if I use the phone, the battery dies quicker than it had. Thought that I might have overheated the battery while trying to remove the old screen, but it still shows 100% in settings. How accurate is that? Also updated to iOS 16.0 around then, and maybe I am just using it more, but up until I broke the screen, I was majorly impressed with the battery life, now… not so much. I’m sure there will be no definitive answer and anything is possible, but I was just curious if anyone else had a similar experience.
Are you absolutely sure they sold you an OLED? You did say it was a cheap chinese display. Where did you buy it from? How much did you pay for it?
The new screen was a bit bluer than the original, so I turned on Night Shift 24/7 so I could adjust the color temperature. That seems to have been the main problem! I turned Night Shift back off and battery life has noticeably improved. I still feel it is less than it had originally been, but I also upgraded to iOS 16 right at that time as well, and it seems likely that the new operating system is partly to blame. The ironic part of it is, I tried to research whether or not Night Shift can affect battery life, and all I could come up with was articles claiming that it can IMPROVE battery life!!!! Maybe that is true on an LCD, but I think the only reason it would save battery is by dimming the screen a bit (I can do that myself, thanks). It seems to me that it was constantly monitoring ambient lighting and tweaking the screen to match and therefore using more processing power than normal (but I could be entirely wrong). So, I believe it was three minor things that added up to a very noticeable battery usage change The aftermarket screen is very likely not as efficient as the factory screen.Night Shift seems to have been using more processing power.iOS 16 is slightly more power hungry
