Battery longevity AOD off vs AOD on. This is messed up. More info in the comments. : r/GearS3
Gear S3 Battery Drain Fix!!! - YouTube
Samsung Gear S3 review - evolution of a smartwatch! - Android Authority
Samsung Brings One UI to Its Smartwatches - Thurrott.com
So after I updated to the latest firmware I got extreme battery drain like from 100% to dead within an hour even after replacing the battery. HR sensor is dead wont turn
Samsung Gear S3 Review | PCMag
Galaxy Watch, Gear S3, and Gear Sport gets One UI update