Samsung Expands One UI 9 Testing to A‑Series as Stable S26 Build Appears

The server sightings suggest a public S26 rollout is near and raise fresh questions about which phones will meet the hardware rules for Google’s Gemini AI.

Overview

Trackers and firmware researchers reported on Monday that Samsung has pushed One UI 9 test builds from flagship lines to midrange models, with beta firmware for the Galaxy A55 and preparation for the A57 now visible on Samsung’s test servers.
The Galaxy S26 line has a stable One UI 9 build (BZHG) sitting on Samsung servers alongside a new beta candidate (ZZHC), which indicates Samsung may move from Beta 6 to a public stable rollout in days or weeks rather than months.
One UI 9 brings specific new tools such as Now Nudge, My FanCam, Photo Assist voice commands, AI Privacy Alerts and an AI Assistant activity log, but which features appear on each model will vary by device generation and hardware.
A key point of uncertainty is access to Google’s Gemini Intelligence: Google lists 12GB of RAM as a baseline and Samsung has not confirmed cutoffs, leaving expected 8GB devices like the upcoming S26 FE unclear about Gemini eligibility.
Samsung is already developing a mid‑cycle One UI 9.5 that leaks say will add visual changes and a 'My Custom Widget' feature, a sign the company plans overlapping update streams and continued UI and AI refinements after the initial rollout.