Press the Power key repeatedly until the Select REBOOT MODE screen displays. Press the Power key to highlight ' Recovery'. Press and hold the Home key to select. Keep holding the Power key until the Gear S3 begins rebooting. If this works, you'll have a fully reset watch, so you'll need to reinstall any apps and watches. Apprentice. Options. 25-08-2020 04:41 PM in. Update seems to made bluetooth cause the battery drain. Putting it in airplane mode will make your battery last again but take away all smart connectivity & functionality. It's just a regular watch now just in time for you to purchase the new galaxy watch 3 to replace it. Screwdrivers used in this repair 👉 Y Screwdriver: http://bit.ly/2AhHUF8Flat Head: http://bit.ly/2v9c3RmYou can click the zero calorie link below to send you Battery degredation usually is affected by how it is charged and discharged. The number of cycles , usage, heat, etc. So it's a bit hard to say how long it is supposed to last. If I had to give an answer, average 2 years before needing replacing on most smart watches and even phones. Could be longer or shorter though. Qoutmcuy Replacement Battery for Samsung Gear S3 Frontier(SM-R760) and Gear S3 Classic, Upgraded Battery SM-R770, BR760, R765, EB-BR760ABE, GH43-04699A with Professional Repair Tools kit. 4.2 out of 5 stars 15 430mAh Upgraded Replacement Battery for Samsung Gear S3 Frontier (2022 New Version), Gear S3 Classic 3.85V Battery SM-R760, R770, R765 EB-BR760ABE GH43-04699A with Professional Repair Tools Kits 4.1 out of 5 stars 7 Promotions. $20 Off. Device Repair. Schedule Your Repair Appointment Online*. * Valid on most models at most locations. Valid 1/2/24–1/11/24. Exclusions may apply. See Details. ⌚ [COMPATIBLE MODEL]: This Gear S3 Replacement Battery Compatible with Samsung Gear S3 Frontier SM-R760, SM-R770, SM-R765 ,Gear S3 Classic, SM-R760, R770, R765. ⌚[DURABLE LONG-LASTING] Built-in upgrade smart IC chip technology, and our battery is tested under strict quality control, RoHS & CE & FCC certified. XU2gICV.