iPhone 13 Pro Max to 15 Pro - I just transferred all my data yesterday at 6PM and then must have missed the charger when I set it down to go to sleep around 11pm. I've done this before on my Pro max and it might drain 5% overnight. This new 15 Pro looks like I never set it down all night long - that drain curve is linear from my surfing on Chrome from 10-11p straight on till morning. It drained 32% in 8 hours with nothing but a (mostly black) dimmed AOD lockscreen.
I'm told that Apple now does the same thing Windows does and re-indexes your phone when it's new so maybe (hopefully) that's it. My battery page shows Chrome, Gmail, FB, and Memmy in the top 4 spots (70% of all usage) over the last 24 hours so I'm guessing that Apple's own internal iOS usage doesn't show up (how convenient for them).
Does this seem...normal?
I have a 15 pro and don’t think I experienced this. I know that photos on a Mac will run in the background, scanning your photos for faces and objects. That could be what happened, along with some other indexing. Surprised it occurred while on battery though. I wouldn’t worry about it unless it consistently happens.
I guess I’ll just keep an eye on it, but I may wait a few extra days before sending in my old phone / trade in, just in case.