Same here, since last update I am lucky if the battery lasts 12 hours. Had this happen after an update previously and I uninstalled a bunch of apps and everything went back to normal, but this time I have reset/removed everything I don't use and the issue persists. If I disable Bluetooth and WiFi both, so it is in standalone mode, the battery still drains just as fast, thus it has to be something in the update that was applied to the watch!
Since latest update installed on my S3 frontier im not even getting 15 hours, comeon samsung sort it out
I wish I got 15 hrs of battery life. I am lucky Kyle if I get 2hrs. If I use it it's dead in 20 min.