I have given up. I've had my watch for approximately 2 years and now it's hit or miss if the battery will last 4 hours or 24 hours and I rarely get notifications anymore from the watch. I got a good deal on a new galaxy watch and am going to retire my S2 classic to the trash heap. I'm afraid this is a lost cause. ... View more

I have the same problem. I can actually watch the battery indicator on my Gear S2 count down in a matter of minutes. This started happening after a major uodate a few months ago. I have the 3G version. ... View more

I have the Gear S2 3G model from AT&T. It appears to me that the mobile network setting is causing my battery drain. I have it set to auto so that when my watch is out of range of the phone or Wi-Fi it operates independently on the 3G network and then switches back to wi-fi or bluetooth when in rage. The problem is that once it enables the mobile network it doesn't shut it off and then I experience the massive battery drain.  I have fixed this by toggling the mobile network setting in the connections menu on the watch to on, then back to auto, then to off, then back to auto, and then reset the watch. Seems to do the trick every time I get the battery drain after using the mobile network. It's unfortunate that Samsung does not feel it neccessary to address this issure. ... View more

Same problem here. Have had the Gear S2 for over a year with no problems , now the battery won't even last a single day. I haven't changed anything except updated the software. The gear app says the watch faces is draining the battery. I don't have the constant on or wake gesture turned on. My phone battery now lasts longer than the watch. Samsung, please put out a fix. Thank you. ... View more