I have a Samsung Galaxy Watch Active 2 LTE from TMOBILE. I have been given the run around from Samsung regarding this issue. I actually sent it in and they REPLACED PBA - REPLACED COMPONENT. Im still having the same battery drain issue. Chat agents have been transferring me to other agents with no luck in sight to get this watch corrected. With everything TURNED OFF, the battery drains completely in 4hrs. I dont have a smart watch, I have a dummy watch on power saving mode. THIS IS A HUGE ISSUE SAMSUNG HAS NO ANSWER TO. Ive read through all the guides, tips, performed all the resets, deleted unused apps and with all this said and done, this is a faulty watch with a HARDWARE ISSUE! I cant get my money back from this watch yet it is still under warranty! SAMSUNG DOES NOT HAVE A FIX FOR THIS SO BE ADVISED! DONT BUY THIS WATCH!
@Valleyguy Thank you for reaching out! Have you tried the steps in this article? https://www.samsung.com/us/support/answer/ANS00078033/
If the battery continues to drain after completing all troubleshooting, please send a private message with the full model code and the serial number of the watch. Also, please advise if the watch is Bluetooth or LTE? http://bit.ly/2XERsky