CHARGING IPHONE
What is the appropriate time one should charge their iPhone? Should it be charged at 40% or should I allow it to discharge to 10%?
iPhone XS Max
Question marked as
That is called "micromanaging battery", which is done much better by the onboard charging circuit than any human owner.
Charge to 100% whenever possible, especially overnight. Keep "optimized" under "Settings > Battery > BatteryHealth" on. Then get on with the things you bought the phone to do.