I have just changed back to a galaxy active 2 44mm watch as I bought the galaxy watch 4 classic and battery life was awful also will say samsung I think you need to go back to using tizen software on your watches as much better
My Watch4 is now learning, and is now lasting me 2days, well its telling me 2 days, I just come home now, big buffer of battery, just chuck it on charge, I will say its very slow 2 charge as opposed to my old Active 2
My watch 4 classic lte lasts a day, worst Samsung product ever. Massively dissapointed, with everything turned off and down it lasts 2 days, absolutely without doubt the worst purchase I have ever made from Samsung, what were they thinking? Sorry all, I just feel cheated.