Stuck in the rebooting loop

"I have been dealing with this too. Definitely due to moisture. In my case, brought it with me into the shower and it got a little wet. I thought it had better water resistance. (my bad)

My belief is that the ""button"" part went bad. Samsung Gear S3 frontier (SM-R760) Volume flex cable GH59-14696A https://rounded.com/samsung-gear-s3-fron...

In the states you can get it through SamsungParts.com or call 800-627-4368.

I just ordered the part for ~$17 total and am hoping it fixes the bootloop problem. Considering that the watch thinks both buttons are being pushed all the time which is why it goes into the loop, it should be the fix."

So my watch to was stupid k in reboot loop so I tried with the power off holding the power/home botton waiting for the Samsung gear prompt came on and while still holding after it went off then still held while it ran through the Samsung gear S3 reboot prompt came on and disappeared and and came on and went off and came on and went off not letting go until about the 5th Samsung gear s3 reboot prompt showed and then completely let go and within a matter of 10/secoond not only was my watch fixed but I lost absolutely no data still had all my apps and watch faces everything was still there... So hopefully this helps you and others just like it helped me good luck

I think if you get a new: Samsung Gear S3 frontier (SM-R760) Volume flex cable GH59-14696A, it will fix the problem. You need to replace the button connectors. Ordered one myself.