Galaxy Watch receiving One UI 1.5 update on T-Mobile

Samsung has released a new software update for Galaxy Watch on the T-Mobile network in the US. The update brings the One UI 1.5 with a bunch of new watch faces, Bixby 2.0, and enhancements to the S Health.

The update sporting build number R805USQU1CSL2 and R815USQU1CSL2. The size of this update is 121MB. This update already rolled out globally.


  • UI graphical element changes (UI 1.5)
  • S Health enhancements (Outdoor swimming trajectory & distance enhanced. Auto-session calorie logic added. Heart rate calorie calie logic added.)
  • Updated to Bixby 2.0
  • New watch faces

If you own Galaxy Watch and reside in the US you can check if the update is available by going into the Settings > About Watch > Update Now > Download updates manually.

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