I just got my Watch 4 Classic as a bday gift and what a dissapointment. Battery life is abysmal.
Needless to say I think the only way to fix the battery life is to power down the watch.
"Turning off basically everything" in order to improve battery is not a acceptable solution Samsung. Even airplane mode and battery saver my watch drops 20% overnight while sleeping. Charging this device 2 times a day will cycle the battery in no time.
In comparison to fitbit, I think they have 4 legs up .. I'll be packing this back up and hopefully return it with my gift receipt. Haven't decided if i'm going to get Charge 5 , Sense 3 or maybe Versa.