Sharing my Experience with the new galaxy watch that I have it for17 days , according to Samsung it's supposed to stay for 4 days on a single charge which is not the case for sure, i couldn't get more than 2 days from this watch at the best using it as a standalone device with the LTE on I tried everything possible like shutting down all unnecessary functions like continuous heart rate monitor or GPS for location etc.. I don't play music on it nor did I download any apps or watch faces, I tried to find reviews or experiences online but obviously the watch is new so i failed to find an answer, I called Samsung Tech Support which I believe I am more geeky and Techy than those that answer the calls, one suggested that i would send it to Samsung to check it or take it to one of Samsung's service locations and gave me the addresses and numbers I hung up and called of course no answer and inbox full so i couldn't even leave a message so i called Samsung again and the Rep. that answered probably located in India where I barely understood 10% of what he said and he also suggested that I send the watch to them well he told me that the Authorized service centers don't do watches only phones loll well the first one gave me addresses and numbers !! anyways it's all free may be my brand new 400$ watch plus Tax needs a battery or a board or so which i didn't like of course to send a new watch even to Samsung for someone to play with it and scratch or whatever i told him why don't you let me send it and if it's defective Samsung can send me a new one this is a 14 days old watch not that i am sending it to you at the last day of the warranty, he started mumbling I said can i talk to higher tier person he said yes but it's late now they work till 5 pm so you can call tomorrow of course no phone number for them so you have to through these smart guys to transfer you I said ok I will call back tomorrow, i forgot to say that he asked me if i tried with T-Mobile I told him the warranty comes from Samsung not T-Mobile he said yeah right, anyways so before calling I decided on that night to try to keep my watch connected to the phone via Bluetooth all the time after resetting it one more time and keeping all the settings as before LTE and Wi-Fi on Auto now after 3 days of light usage as i normally do I still have 52% Juice on the battery which is impressive, I am assuming I might get 6 to 7 days out of this watch on a single charge, my opinion is that the LTE is the culprit draining this battery, I spend long time indoors so may be the watch puts extra effort to stay connected to towers I haven't really tried if there's a difference if I spent longer hours outdoor, hopefully others would share their experiences.
I am assuming Samsung's 4 days battery life estimate is depending on customers to connect the watch mainly via Bluetooth and if we went out for few hours leaving the phone at home and let the watch connect as a standalone LTE device we would get the 3 to 4 days average they are talking about??