[DiaryPoint = Reporter Eom Ju-yong] Samsung Electronics is rolling out the Android 17-based One UI 9 update to Galaxy devices in South Korea in stages. The domestic rollout began with the Galaxy S26 series on September 16 and has since expanded to the S25, Z Fold7 and Z Flip7, then the S24, Z Fold6 and Z Flip6, followed by the S23, Z Fold5 and Z Flip5.
According to Samsung's official announcement, the Galaxy S26, S26+ and S26 Ultra were the first devices to receive the update. Samsung's device update records show the Galaxy S24 received Android 17 and One UI 9 on October 27, while the Galaxy A35 5G was confirmed to have gotten the One UI 9 rollout on October 21. Even for the same model, the timing of availability can vary depending on carrier and sales region.
Check eligibility by model name and in Samsung Members
The fastest way to check whether your phone is eligible is through the Settings app. Go to Settings, tap Software update, then Download and install to see the latest version available on your device. Samsung advises that the list of One UI 9-compatible devices and their rollout timing can be checked in the Samsung Members app.
Your phone's model name can be found under Settings > About phone. The Galaxy S24, S23, some generations of Z Fold and Z Flip, and some A-series models have confirmed rollouts, but Samsung has not released a complete schedule for every domestic model at once. If a device isn't listed as eligible in Samsung Members or no update appears in the update menu, it may simply mean that device's region or carrier hasn't been reached yet.
Update file size varies by device and existing software
The download size for One UI 9 differs depending on the device and its current software version. For Galaxy S24 Ultra beta testers, the official update file size was confirmed at 480.29MB, and the size differs for general users and other models. Before installing, users should check the actual file size shown on the update screen, back up photos and videos, and ensure there is enough free storage space.
The new features go beyond a simple visual refresh. My Fancam lets users select a person in a video so the AI automatically follows and edits footage around them, while Now Nudge analyzes messages and on-screen context to suggest actions like saving an address or checking a schedule. Now Brief's personalized cards, a threaded view for Interpreter, improved document scanning, and voice recording summaries have also been added.
Security features have been strengthened as well. Security Brief summarizes risks such as malicious apps and excessive permission use, while a privacy protection alert notifies users of potential privacy intrusion attempts. However, the scope of AI features may vary depending on device model, language and country.
If the update doesn't appear, check the phased rollout first
If the update isn't showing up, first connect to Wi-Fi and check the Software update menu in Settings again. Samsung notes that new updates may be distributed in multiple phases to reduce server load. Unlocked devices, international models, or budget carrier (MVNO) users may see delayed rollout since their firmware differs from devices sold through the original carrier and region.
If installation keeps failing, check for insufficient storage space or an unstable internet connection, charge the battery sufficiently, and try again. If the over-the-air update still doesn't appear, users can also install Samsung Smart Switch on a PC or Mac and connect via USB. As of late October, the domestic rollout is continuing model by model, and further details on upcoming devices and timing are expected to be confirmed through Samsung Members and individual device update records.