Experiencing severe battery drain on your Gear S3 or Gear Sport? Try this temporary fix - PhoneArena
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Samsung is pushing another Gear S3 update to take care of the battery drain - GSMArena.com news
Samsung Gear S3 Battery Life & Charger Options
Just replaced my Gear S3 battery (24$ + 10$ for tools). Excited to get 3+ days back. Links in comments, will report back with new battery life in a few days. : r/GearS3