iPhone 13 overnight battery drain.
I’ve recently purchased the iPhone 13 base variant. I haven’t updated it to 17.1 still on 16.7.2, I’ve noticed that overnight my battery reduces almost 3-5% but before going to bed I always turn off the WiFi and there’s no background app running left. Why this is happening? Should I be concerned? What should I do?
iPhone 13, iOS 16