Looks like Samsung can do it (though they offer it as advice to keep their buggy OS working, or to "to prevent it from slowing down or freezing" as they themsel

Looks like Samsung can do it (though they offer it as advice to keep their buggy OS working, or to "to prevent it from slowing down or freezing" as they themselves put it): https://www.samsung.com/ph/support/mobile-devices/restart-your-galaxy-phone-regularly-to-prevent-it-from-slowing-down-or-freezing/ https://www.samsung.com/ph/support/mobile-devices/restart-yo... My Xiaomi phone had a feature where it would boot the phone shortly before any alarms would go off, so you could shut it down before bed and barely drain the battery in the mean time. Still required manual shutdowns, though.