Samsung Rolls Out One UI 8.5 Stable Update; One UI 9 Beta Testing Begins

Samsung Rolls Out One UI 8.5 Globally, Begins Internal Testing of One UI 9.0

Samsung has initiated the global rollout of the stable One UI 8.5 update for select Galaxy devices, based on Android 16, while also beginning internal testing of One UI 9.0 (based on Android 17) for the upcoming Galaxy S26 series.

The rollout of One UI 8.5, which includes new features and security patches, is being conducted in phases across different regions and device models.

One UI 8.5 Stable Update Rollout

Samsung announced the global rollout of the stable One UI 8.5 update beginning May 11, 2025, following its initial release in South Korea on May 6. The update has reached devices in the United States, Europe, Canada, Serbia, Norway, Hong Kong, India, Latin America, Southeast Asia, and Taiwan, with other regions expected to follow.

The following devices are eligible to receive the One UI 8.5 update:

Galaxy S Series:

• Galaxy S25, S25+, S25 Ultra, S25 Edge, S25 FE
• Galaxy S24, S24+, S24 Ultra, S24 FE
• Galaxy S23, S23+, S23 Ultra, S23 FE

Galaxy Z Series:

• Z Fold 7, Z Flip 7
• Z Fold 6, Z Flip 6

Galaxy Tab Series:

• Tab S11, S11+, S11 Ultra, S11 FE, S11 FE+, S11 Lite
• Tab S10+, S10 Ultra, S10 FE, S10 FE+, S10 Lite

Some Galaxy A-series models are expected to receive the update at a later date, according to Samsung Germany.

Firmware Versions:

• Galaxy S25 series (US): S938USQU9CZDP/S938UOYN9CZDP
• Galaxy S24 series (US, Verizon): S92xUSQU5DZDR
• Galaxy S23 series (Europe/India): S91xBXXU9FZDP
• Galaxy S23 series (South Korea): S91xNKSU7FZDT
• Galaxy Tab S11: X736NKOU5BZE3
• Galaxy Tab S11 Ultra: X936NKOU5BZE3

Update Size:

• Approximately 4.4 GB for users upgrading from One UI 8
• Approximately 300-390 MB for users already on the beta version

Security Patch: The update includes the April 2026 security patch.

Stable One UI 8.5 introduces several new features and improvements:

• Visual Design: Refreshed design with transparent blur effects and floating UI elements
• Quick Panel: Completely customizable Quick Panel
• Device Care: Redesigned Device Care menu
• Bixby: Enhanced with natural language understanding, access to past conversation history, and Perplexity integration
• Lock Screen: Automatic layout adjustment for people and pet wallpapers, additional clock customization options, and new downloadable interactive wallpapers
• Camera: Continuous image generation in Photo Assist editor and three new portrait filters
• Weather: Background effects for alarm screen
• Clock App: Timezone converter
• Connectivity: Improvements to Storage Share across Samsung devices, Auto Hotspot enhancements, faster Smart View connections, and shortcuts for favorite Smart View devices
• Additional Features: Direct Voicemail, Family Device Sharing, enhanced Auracast features

Galaxy S25 Series June 2026 Security Update

Samsung also released a separate June 2026 security update for the Galaxy S25 series. This update, larger than typical security patches, adds two Galaxy AI features previously exclusive to the Galaxy S26 series:

• Prioritise Notifications: Places the most important notifications at the top of the stack
• Summarise Notifications: Condenses long notification threads into a summary
• File Summaries: Generates AI-powered summaries of PDF and TXT files locally on the device

The build version for this update is S938NKSUACZF1. The rollout initially covers the Galaxy S25 series in South Korea, with broader availability in North America, Europe, and India expected in the following week.

Galaxy Z Fold 7 Software Update

Samsung released a software update for the Galaxy Z Fold 7 containing the June 2026 security patch, addressing 45 security issues. This update also introduces Priority Notifications and Files Summaries, two Galaxy AI features previously available on the Galaxy S26 series.

Previous Security Updates

March 2026 Security Update: Samsung deployed a software update for the Galaxy S25 series in South Korea, carrying firmware version S93xNKSS8BZC1. The download size exceeded 500MB, and the patch resolved 65 identified vulnerabilities.

February 2026 Security Update: Samsung distributed a software update globally for the Galaxy S25 series (S25, S25+, S25 Ultra, S25 FE, S25 Edge), integrating the February 2026 security patch. Build numbers conclude with either BZB5 or AZB6.

One UI 8.5 Beta Program

Samsung's One UI 8.5 beta program for the Galaxy S25, S25+, and S25 Ultra included up to ten beta updates. Eight beta updates had been released as of the latest reports. Based on Samsung's release schedule, the ninth and tenth beta updates were anticipated around April 9 and April 20, respectively.

The Galaxy S25 FE received its first One UI 8.5 beta update on March 26, later than the other S25 models. Historically, FE models have been excluded from One UI beta programs. Due to its delayed start, the Galaxy S25 FE's beta program was expected to continue after the conclusion of the beta programs for the S25, S25+, and S25 Ultra.

However, as all Galaxy S25 models share core software, Samsung has released the stable One UI 8.5 update to all devices simultaneously.

One UI 9.0 Beta Testing

Samsung has begun internal testing of the first One UI 9 beta builds for the Galaxy S26 series, based on Android 17. The initial build for the Galaxy S26 Ultra has firmware number S948BXXU2ZZE7, with "Z" indicating a beta version.

The One UI 8.5 beta program was still ongoing when this testing began, and a stable release of One UI 9.0 has not been announced.

Early testing of One UI 9.0 shows limited new features and UI changes compared to version 8.5.

How to Install

Users can check for and install updates by navigating to Settings > Software update > Download and install on their device.

Users running the One UI 8.5 beta will receive a smaller download, while those upgrading from One UI 8 can expect a larger update package. Devices should have at least 30% battery charge remaining before installation.