Home
Mobiles
Mobiles News
Samsung Reportedly Starts Internal Testing of Android 17 Based One UI 9 for Galaxy S25 Series

Samsung Reportedly Starts Internal Testing of Android 17-Based One UI 9 for Galaxy S25 Series

One UI 9 offers several improvements to Samsung Notes, the Contacts app and the Quick Panel.

Written by Nithya P Nair, Edited by Rohan Pal | Updated: 5 June 2026 19:05 IST

Samsung Reportedly Starts Internal Testing of Android 17-Based One UI 9 for Galaxy S25 Series

Photo Credit: Samsung

One UI 9 introduces an adjustable Mouse Key speed and a new TalkBack package

Click Here to Add Gadgets360 As A Trusted Source

Highlights

Samsung may have already started development of One UI 9
One UI 8.5 arrived on older foldable phones recently
Samsung announced One UI 9 beta program for the Galaxy S26 series in May

Samsung introduced the Galaxy S26 series in February with One UI 8.5 based on Android 16. In recent weeks, the South Korean company has started rolling out the stable One UI 8.5 update to many older Galaxy smartphones and tablets. A fresh leak now indicates that Samsung started the testing of its next major software release, One UI 9, on older Galaxy S series phones. This update, based on Android 17, is likely to make its way to eligible flagship smartphones in the coming months.

One UI 9 Testing Started for Galaxy S25

Tipster Tarun Vats (@tarunvats33), in his latest X post, claimed that Samsung has started internal testing of One UI 9 for the Galaxy S25 lineup. As per the post, the first internal test build has been spotted, but its exact build version has not been decrypted.

One Ui 9 Discussion

One UI 9 beta arriving for Galaxy S26 series

Explore More...

Exclusive ‼️

Galaxy S25 Series: Samsung has started internal testing of One UI 9 for the Galaxy S25 Series.

We have now spotted the first internal test build, although we are currently unable to decrypt the build version.

Interestingly, it has been spotted around 2 weeks… pic.twitter.com/G1qCqR0gFg
— Tarun Vats (@tarunvats33) June 5, 2026

Vats states that the One UI 9 build was spotted around two weeks earlier than Samsung's usual testing timeline. For comparison, the first One UI 8 test build for the Galaxy S24 lineup was reportedly surfaced on June 19 last year. This indicates that Samsung may have already started development of One UI 9, which is expected to be based on Android 17, for its existing flagship phones.

Samsung is likely to make the One UI 9 beta available for more users after the wider rollout of One UI 8.5. The Android 16-based update has recently arrived on older foldable phones, including the Samsung Galaxy Z Fold 5, Galaxy Z Flip 5, Galaxy Tab S11 series and select Galaxy A series models in India and other regions.

Samsung Galaxy Z Fold 8 Series Could Get Carbon Standing Case: Report

The company announced the One UI 9 beta program for the Galaxy S26 series last month. One UI 9 beta adds improvements to Samsung Notes with decorative tapes and pen line styles. With this update, the Contacts app offers direct access to Creative Studio. It includes an updated Quick Panel.

Samsung May Bring Back Snapdragon-Powered Galaxy Z Flip With Z Flip 8

One UI 9 introduces an adjustable Mouse Key speed and a new TalkBack package. It also includes a Text Spotlight feature to show selected text larger or more clearly in a floating window. One UI 9 also includes new security and protection features. It is also confirmed to include several AI-based enhancements.

Samsung Galaxy S25

REVIEW
KEY SPECS
NEWS

Design
Display
Software
Performance
Battery Life
Camera
Value for Money

Good
Compact and excellent aesthetics
Top-notch display
AI features loaded
One UI 7 brings nice updates
Decent cameras

Bad
25W fast-charging limit
Expensive (base price)

Read detailed Samsung Galaxy S25 review

Display 6.20-inch

Processor Snapdragon 8 Elite

Front Camera 12-megapixel

Rear Camera 50-megapixel + 12-megapixel + 10-megapixel

RAM 12GB

Storage 128GB, 256GB, 512GB

Battery Capacity 4000mAh

OS Android 15

Resolution 1080x2340 pixels

More Samsung mobiles Samsung mobiles price in India

Comments

Get your daily dose of tech news, reviews, and insights, in under 80 characters on Gadgets 360 Turbo. Connect with fellow tech lovers on our Forum. Follow us on X, Facebook, WhatsApp, Threads and Google News for instant updates. Catch all the action on our YouTube channel.

Further reading: One UI 9, Samsung, One UI 9 Testing, One UI, Samsung Galaxy S25, Samsung Galaxy S25 Series

Nithya P Nair

Email Nithya P Nair

Nithya P Nair is a journalist with more than five years of experience in digital journalism. She specialises in business and technology beats. A foodie at heart, Nithya loves exploring new places (read cuisines) and sneaking in Malayalam movie dialogues to spice up conversations. More