My samsung watch 7 battery runs for 2 days in a single charge ,watch device care will help you out from this problem dnt use reverse charging of watch with samsung smart phone it's can damaged battery
Background application should be not run ,schedule your phone to reboot everyday in night ,use device care in every 30 min ,if you are counting multiple non samsung smart device dnt use ,use only samsung smart watch,samsung buds it's optimize your ph...