The Galaxy A15 4G has finally entered Samsung’s One UI 8.5 rollout, ending the gap that left the LTE model behind its 5G counterpart. For users of Samsung’s most affordable phone eligible for the update, this is the sign many had been waiting for.
The first wave is now appearing in South Korea on the SM-A155N variant, and the package is substantial enough to demand some storage preparation before installation. Samsung’s move also suggests that the wider release is no longer a question of if, but when.
What Samsung Is Rolling Out
The new firmware for the Galaxy A15 4G/LTE carries version A155NKSU9DZF1 and weighs 2,590.58MB. That makes it one of the larger updates arriving on an entry-level Galaxy device, combining interface changes with a security refresh.
According to reports from Tarun Vats and Samsung Community, the build marks the beginning of One UI 8.5 distribution for the 4G model after the update had already reached the 5G version. That matters because the A15 line has been viewed as the most budget-friendly Samsung lineup confirmed for One UI 8.5.
| Update Detail | Information |
|---|---|
| Model | Galaxy A15 4G/LTE |
| Market | South Korea |
| Model Number | SM-A155N |
| Firmware Version | A155NKSU9DZF1 |
| Package Size | 2,590.58MB |
Why This Update Matters
The arrival of One UI 8.5 is not just about a new interface layer. Samsung also includes the May 2026 security patch, which fixes 36 security issues and adds another reason for users to install the update as soon as it becomes available.
For a low-cost phone like the Galaxy A15 4G, that combination of visual changes and security maintenance is especially important. It shows that Samsung is continuing to support the non-5G model rather than focusing only on the faster variant.
New Look, New Tools
One UI 8.5 brings a more modern visual style, including transparent blur effects and a floating bottom bar in Samsung’s built-in apps. The update also expands customization options, giving the interface a different feel from the version that came before it.
On the feature side, Samsung has added support for Apple AirDrop, one of the more attention-grabbing changes in this release. The company has also introduced partial screen recording, which lets users capture only a selected area of the display instead of recording the entire screen.
Those additions make One UI 8.5 stand out beyond routine maintenance. They point to a broader update that changes both how the phone looks and how it can be used day to day.
Rollout Still Starts Small
Samsung is currently offering the update only in South Korea, which is consistent with the company’s usual software rollout pattern. Other Galaxy A15 4G/LTE units are expected to receive the same build gradually over the next several days.
Users outside Korea may need to wait a little longer before seeing the notification on their own devices. The update can be checked manually through Settings > Software update > Download and install, and Samsung is expected to expand availability country by country.
With the A15 4G now joining the rollout, the remaining difference between the LTE and 5G versions is starting to disappear. For owners of the budget model, that means the long wait for One UI 8.5 is finally ending.
