Samsung has activated the stable deployment of its new layer, One UI 8 based on Android 16, with a phased release starting with the latest models and rolling out to other markets in the coming days.
The company confirms that the Update starts with the Galaxy S25 family and the launch is global; however, as usual, countries like Spain will receive it somewhat later depending on availability by region and model.
One UI 8 Top New Features
This release focuses on moving to more devices the features released in the latest Galaxy, with a special emphasis on artificial intelligence, system stability, and performance tweaks that don't overly alter the design compared to One UI 7.
- Now Brief: Dashboard with personalized reports that update throughout the day (traffic, reminders, routines, and recommendations).
- Now Bar: Contextual notifications and real-time media progress, with expanded integration and direct viewing in the Galaxy Z Flip's FlexWindow.
- AI Results View: Displays results in a split screen or floating window so as not to cover the original content.
- Optimized multi-screen: Drag and drop AI-generated text and images between apps; support for Drawing Assistant and Writing Assistant.
- Gemini Live in FlexWindow: Voice search and hands-free assistance from the cover screen.
- Audio draft: Remove background noise like wind or traffic with one tap in video and audio apps.
- Adaptive clock: font that adjusts to the background, with control over thickness, size and color.
- Customizing FlexWindow: Suggested backgrounds from the Gallery, customizable emojis and colors.
- Integration with Circle to Search and instant on-screen text translations.
In the security section, One UI 8 incorporates KEEP (Knox Enhanced Encrypted Protection) to isolate sensitive data by app, strengthens protection between devices with Knox Matrix and improves Secure Wi-Fi with post-quantum cryptography (PQC).
Beyond AI features, Samsung emphasizes that there are stability and performance improvements of the system, with subtle interface changes that polish the experience without drastic redesigns.
Deployment schedule and download sizes
The first to update are the Galaxy S25, S25+, S25 Edge and S25 Ultra, which are already receiving the stable version in the first wave.
The start-up occurs first in South Korea and will continue as a global rollout over the coming days and weeks. In markets like Spain, the rollout will be gradual, following Samsung's usual pattern.
Beta participants get the stable build with a smaller download: YI7 of about 555 MBFor users upgrading from One UI 7, the update is heavier: YI3 is around 4 GB, including all the components of the system.
Compatible mobile phones and tablets
Following the Galaxy S25 series, the update will be released for a wide selection of Galaxy devices recent. Samsung has advanced the following groups:
- Galaxy S range: S25, S25+, S25 Ultra, S25 Edge; S24, S24+, S24 Ultra, S24 FE; S23, S23+, S23 Ultra, S23 FE; S22, S22+, S22 Ultra; S21 FE.
- Galaxy Z range: Z Fold6, Z Flip6, Z Fold5, Z Flip5, Z Fold4 and Z Flip4.
- Galaxy A range: A73, A56, A55, A54, A36, A35, A34, A33, A26, A25, A24, A17, A16 (including 5G version), A15 (including 5G version) and A06.
- Galaxy Tab: Tab S10 series (incl. S10+ and S10 Ultra, FE variants), Tab S9 (S9, S9+, S9 Ultra and S9 FE/FE+), Tab S8 (S8, S8+ and S8 Ultra), plus tab s6 lite, Tab A9 y Tab A9+.
The company reiterates that the plan is global and phased, so exact dates may vary by region, carrier, and model.
How to update your Galaxy
When it's available, you'll see a notification on your phone. You can also check it at Settings > Software Update > Download and Install.
- Connect to a stable Wi-Fi network and make sure you have enough battery (or charge it during the process).
- Free up space if necessary, especially if you upgrade from One UI 7 and get the larger package.
- Make a backup before updating.
Context: From One UI 7's stumble to a more agile rollout
With One UI 7, Samsung chained delays and a critical failure which affected the lock screen, forcing the update to be temporarily withdrawn and then reissued.
To avoid repeating history, the One UI 8 beta started in May in four countries, expanded to six, and had several iterations; the seventh build, released on September 8, only introduced minor adjustments, paving the way to the stable version.
One UI 8 boots with the Galaxy S25 and an initial round in Korea, and will continue to roll out to more markets and models in the coming days. Key features of this release include AI features (Now Bar, Now Brief, AI results, and Gemini Live), security enhancements (KEEP, Knox Matrix, and Secure Wi-Fi), and a clear focus on stability. If you participated in the beta, you'll download less, while starting with One UI 7, the package will be larger.
