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
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Samsung is pushing another Gear S3 update to take care of the battery drain - GSMArena.com news
Fix for Samsung Gear S3 battery drain issue begins rolling out - GSMArena.com news
Samsung Gear S3 battery drain bug returns for some users - 9to5Google
How to Temporarily Fix the Battery Drain Issue on the Gear S3 and Gear Sport