16.5.1 battery drain

I think I found the possible problem that's possibly creating this, referring to iOS 16.5.1 (c) restart your phone regularly, after as soon as you can open the settings app, then privacy & security then location services, then share location, then Share My Location is turned on yet location services are turned off (at least that's what is happening to my iPhone 13 Pro Max) after 2 regular restarts & a hard restart both are off now. Try that, lol. I hope that helps some, it did some for me

Forgot to mention my battery health is at 90% & I keep location services & sharing my location off, background app refresh off, mail fetch at 1 hour, auto - brightness, no bluetooth, auto lock at 30 seconds & no Face ID & analytics & improvements are off too, no social media apps & my phone lasts about 5-7 hours of screen time, sometimes 8 & it's a iPhone 13 Pro Max, lol

iOS 16.5.1 (c)