iPh 7 battery problem when sleeping
I have an iphone 7 and its battery level is %89, so it is normal but especially at night or when i sleep, my battery is suddenly going down. Its battery level was about %80 at 2 a.m. and when I woke up at 7.55 it was around %60, and always like this, but I said ok, maybe because of icloud but i slept again and when i got up at 1 p.m. it was fucking %40. twenty fucking persent in 4 hours and wifi was off, plane mode was on. I turned off some system location services on privacy but i am not sure if it is normal. how about you guys, do you encounter a problem like this?