Samsung's One UI 9, based on Android 17, is now reaching a long list of Galaxy phones. The stable update started on the Galaxy S26 series in mid-September 2026 and has since spread to the Galaxy S25, S24 and S23 families, recent Galaxy Z foldables and several Galaxy A models. Because Samsung releases it in waves by country, carrier and model, many owners are still asking the same thing: is it my turn yet, and how do I install it safely?
This guide walks you through checking for the update, backing up your data first and installing One UI 9 with or without a computer. The steps follow Samsung's own support pages.
Is your Galaxy getting One UI 9?
According to rollout trackers cited by Talk Android on October 23, the stable build has started reaching 28 phones, including:
- Galaxy S: S26, S26+, S26 Ultra; S25 series (including S25 Edge and S25 FE); S24 series (including S24 FE); S23, S23+ and S23 Ultra
- Galaxy Z: Z Fold 7, Z Flip 7, Z Flip 7 FE, Z TriFold, Z Fold 6, Z Flip 6, Z Fold 5, Z Flip 5
- Galaxy A: A57, A56, A37, A36 and A27
Being on the list does not mean the update is on your phone today. Two people with the same model can get it weeks apart. The Galaxy S23 FE is still waiting for a date, and the Galaxy S22 series is not expected to get One UI 9.
Step 1: Back up your phone
Big system updates rarely go wrong, but a backup costs you a few minutes and protects you if something fails. Samsung offers two simple options:
- Samsung Cloud: open Settings, tap your Samsung account name at the top, tap Samsung Cloud, then Back up data. Choose what to include and tap Back up now.
- Smart Switch on a PC or Mac: install Smart Switch on the computer, connect the phone with a USB cable and tap Allow on the phone. In Smart Switch, click Backup, pick the data categories and start the backup.
Photos are usually the most valuable data, so make sure your gallery is included or synced to a cloud service before you continue.
Step 2: Install One UI 9 over the air
- Connect to Wi-Fi and charge the battery well. The download is large, roughly 3.5–4GB when you update directly from One UI 8.5.
- Swipe down from the top-right corner and tap the Settings icon.
- Scroll to the bottom and tap Software update.
- Tap Download and install (on some carrier models it's called Check for updates).
- If One UI 9 is available, it starts downloading. When it finishes, follow the on-screen prompts to install. The phone restarts during the process.
Keep in mind that you can't use the phone during installation, and that includes calls. Start it at a time when you won't need the phone for a while.
Step 3 (optional): Update with Smart Switch
- Connect the phone to a computer that has Smart Switch installed.
- Open Smart Switch and let it detect the phone.
- If a new version is available, select Update and follow the prompts.
- Don't unplug the cable or use the phone until the update is complete.
After the update
To see what changed, open Settings, find the help section (it may be called Tips and user manual or similar) and select What's new in One UI 9. To confirm your version, go to Settings > About phone > Software information.
Common problems and fixes
- No update appears. Samsung hasn't opened the rollout for your model, region or carrier yet. Check again in a few days. Some carriers also require Wi-Fi to see updates at all.
- The download stops or fails. A dropped connection can break the update. Reconnect to a stable network and try again.
- The update was interrupted on a computer. Smart Switch has an Emergency Software Recovery and Reset option under its More options menu. Be aware that this recovery includes a factory reset, which is exactly why the backup in Step 1 matters.
- Galaxy S26 Ultra stuck on the setup screen. Samsung has acknowledged a bug, so far reported in South Korea, where some units freeze at the last setup step. Switching from mobile data to Wi-Fi gets past it, and a fix is promised in a future update.
Should you update right away?
For most people, yes. One UI 9 brings the Android 17 platform plus current security patches. If your phone is your only way to stay reachable, it's reasonable to wait a week after the update appears and check owner forums for problems with your exact model. Either way, back up first.
