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 battery drain problem fixed with latest update - PhoneArena
Samsung Gear S3 Battery Life & Charger Options
How to Fix a Gear S3 Battery Drain
Extreme battery drain on Samsung Galaxy Watch 4 after update. How can I fix this? I haven't made any changes to the watch after the update. : r/GalaxyWatch
Amazon.com: LCLEBM [430mAh Battery for Samsung Gear S3 Frontier (SM-R760),Galaxy Gear S3 Classic Replacement Battery for SM-R770,BR760,R765,EB-BR760ABE Gear S3 Battery with Professional DIY Repair Tools : Cell Phones & Accessories
Some Gear S3 and Sport Users Reporting Massive Battery Drain Issues