Full Breakdown
Samsung Begins One UI 8.5 Stable Rollout for Galaxy S25 Series
4/30/2026, 9:38:15 PM
One UI 8.5 Stable Update Rollout Begins for Galaxy S25 Series
The One UI 8.5 stable update is slated to start rolling out to the Galaxy S25 series on April 30 2026 (Thursday) or May 1 2026 (Friday) in South Korea, with a global release expected on May 4 2026. The rollout will follow Samsung’s typical regional phasing, beginning in Korea before expanding worldwide.
Background & Context
Samsung opened the One UI 8.5 beta program in December 2025, initially for the Galaxy S25. Since then the beta has expanded to nearly two dozen Galaxy phones and tablets, and the company has issued ten beta rounds for the S25 series. The beta phase has been used to address bugs and integrate new features ahead of the stable launch.
Timeline of Beta Updates and Stable Release
- December 2025: One UI 8.5 beta program launched with Galaxy S25.
- Early 2026: Additional devices—including Galaxy S24 FE, Galaxy S23 FE, and Galaxy Tab S11 series—joined the beta.
- April 2026: Third beta updates released for S24 FE, S23 FE, Tab S11, and Tab S11 Ultra (builds ending in ZZDP for phones, ZZD7 for tablets).
- April 30 / May 1 2026: Stable rollout begins for Galaxy S25 in Korea.
- May 4 2026: Global stable rollout for Galaxy S25.
- May 4 – May 30 2026: Expected stable rollout window for other eligible devices.
Device Coverage and Update Size
- Galaxy S25 series: First to receive the stable update; ten beta rounds completed.
- Galaxy S24 FE & S23 FE: Received third beta update (~740 MB, build ZZDP).
- Galaxy Tab S11 & Tab S11 Ultra: Received third beta update (~700 MB, build ZZD7).
- Overall: Nearly two dozen Galaxy phones and tablets are slated for the stable rollout between May 4 and May 30 2026.
Data & Statistics
- Beta rounds for S25: 10.
- Beta update package sizes: ~740 MB (phones) and ~700 MB (tablets).
- Security patch level: April 2026.
- Device count: Approximately 24 devices (nearly two dozen).
Why It Matters
The stable release incorporates bug fixes for calls, video recording, Bluetooth connectivity, and Samsung DeX functionality. New features introduced in the beta—Privacy Alert, Call Screening, and Creative Studio AI—are expected to carry over. Inclusion of the April 2026 security patch addresses known vulnerabilities, enhancing overall device security and user experience.
Official Statements & Responses
Tipster Alfatürk reports that Samsung plans the initial Korea rollout on April 30 or May 1, followed by a global release on May 4. Samsung’s recent beta releases emphasize “fixing remaining One UI 8.5 beta issues before moving into the stable rollout phase,” indicating a focus on stability and security ahead of the full launch.
Conflicting Reports & Gaps
The rollout schedule is based on tipster information rather than an official Samsung press release. No direct corporate statement confirming exact dates has been cited, leaving a gap in publicly verified rollout timing.
What’s Next
From May 4 through May 30 2026, Samsung is expected to extend the stable update to the remaining eligible devices. The company will monitor post-release performance, flagging any bugs or issues and providing fixes as needed. Continued coverage will track regional availability, update sizes, and any subsequent patches.
