Samsung has scheduled the stable One UI 9.0 (Android 17) update for the Galaxy S26 series to arrive in Thailand on September 30, 2026, and in Indonesia on October 3, 2026, according to a moderator on Samsung’s Community forum for Thailand and a statement from Samsung Indonesia.
Earlier this month, Samsung released the stable One UI 9.0 build for the Galaxy S26 series in South Korea and later rolled it out in the United States. Those remain the only two regions that have received the update so far, while international variants are still awaiting the new software.
One UI 9.0 rollout timeline
September 30, 2026 — Thailand: a moderator on Samsung’s Community forum for Thailand disclosed the date.
October 3, 2026 — Indonesia: Samsung Indonesia announced the planned availability.
Earlier releases: South Korea received the stable One UI 9.0 build earlier this month; the United States received a subsequent rollout. These are the only additional regional dates reported so far.
