Samsung is already working on a newer One UI 9.5 beta build for the Galaxy S26 series, according to Tarun Vats. The build, S948BXXU6ZZKD, follows the first One UI 9.5 beta firmware for the Galaxy S26 Ultra that Kailash spotted last week, which ended in ZZK3.
| Detail | Information |
| Newest build | S948BXXU6ZZKD / S948BOXM6ZZKD / S948BXXU6CZKD |
| Previous build | S948BXXU6ZZK3 |
| Model | International Galaxy S26 Ultra (S948B) |
| Status | Beta firmware in development |
The S948B model code points to the international Galaxy S26 Ultra, and the ZZ in the build number marks it as beta firmware. A new build within about a week of the first one shows that development is moving quickly, in line with our look at why the One UI 9.5 beta could arrive sooner than the One UI 8.5 beta did. Samsung hasn’t announced a beta program or a start date for One UI 9.5.
M Adnan Akram is the founder and lead writer at Phoonomo, covering mobile technology with a primary focus on Samsung and the broader smartphone industry, alongside emerging developments in AI. He follows product launches, spec leaks, and industry trends closely to keep readers informed with timely updates.
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