The shift is how fast Samsung’s newest AI tricks are reaching last year’s phones. One UI 9 Beta 2 is now rolling out to the Galaxy S25 series, and Sammy Guru reports it adds new AI features on top of the usual fixes.
The update, build ZZI4, weighs around 650MB, though size varies by model and market. It is going to Galaxy S25, S25+, S25 Ultra and S25 FE users enrolled in the One UI 9 beta program. The rollout is already live in South Korea, India and Europe, and it should reach the US soon.
What’s in Beta 2
Samsung’s official changelog confirms fixes for Bixby Vision translation errors, Wi-Fi disconnections and crashes in the Contacts app. It also claims new AI features without naming them. Sammy Guru reads that as AI tools left out of the first beta.
The likeliest candidates are My FanCam and Call Brief. Both debuted with One UI 9 on Samsung’s latest foldables and recently reached the Galaxy S26 series with Beta 7.
What comes next
Beta 2 arrives a week after Samsung started One UI 9 testing on the S25 line. Passing features down to older models so quickly suggests the company is closing in on a stable release. Sammy Guru expects the S26 series could get it before the end of the month, and the S25 lineup by October, if not sooner.
Samsung is also expected to push its second beta build to the Galaxy Z Fold 7, Flip 7, S24 series and more devices this week.
