GoKawiilSamsung rolls out stable One UI 9 to Galaxy S26 Ultra in the US
Samsung has begun pushing the stable One UI 9 update, based on Android 17, to Galaxy S26 Ultra units in the United States. Reports from T-Mobile Galaxy S26 Ultra owners on Reddit show the update carrying a 4.1GB download and the September 2026 security patch, though it's unclear whether AT&T variants are receiving it yet.
GoKawiil's interpretation of the reporting above, not reported fact.
The US rollout follows Samsung's earlier stable release of One UI 9 in Korea, suggesting a staggered global deployment pattern typical of major carrier-tied Android updates. Other Galaxy S26 models and carriers may follow soon, though Samsung has not confirmed a timeline for wider availability.
- Stable One UI 9, built on Android 17, is now hitting Galaxy S26 Ultra devices on T-Mobile in the US.
- The update is 4.1GB and includes the September 2026 security patch.
- It remains unconfirmed whether AT&T units or other Galaxy S26 models will get the update at the same time.
Samsung Galaxy S26 Ultra — If you're following the One UI 9 rollout, you might as well own the phone it's built for. The Galaxy S26 Ultra brings Samsung's latest Android 17-based software along with flagship-tier hardware. It's a great time to grab one as updates continue rolling out.
See Samsung Galaxy S26 Ultra on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: androidauthority.com, 2026-09-23
Published there as: “The Galaxy S26 series is now getting stable One UI 9 in the US!”
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