Phone seems to be high on the list, when my wife had particularly bad battery on her 5 one day it said low signal under phone and it was on the top of the list. When you take away the screen time option does it say low signal?
Granted I don't use the phone app a ton,but it's never at the top of the list
Granted I don't use the phone app a ton,but it's never at the top of the list