Samsung makes progress on One UI 8.5 for Galaxy S23, Z Flip 6, and Z Fold 6

After releasing the first One UI 8.5 beta update for the Galaxy S25 series, Samsung is making progress on developing the One UI 8.5 update for more high-end phones. The company has started testing One UI 8.5 for the Galaxy S23 Ultra, Galaxy Z Flip 6, and the Galaxy Z Fold 6.

A firmware with version S918BXXU8FYLB was spotted on Samsung's servers. Looking at the first four letters, it is clear that it is meant for the Galaxy S23 Ultra. And looking at the last four characters, it is evident that the firmware is based on One UI 8.5. Moreover, firmware versions ending with DYLB were also found for the Galaxy Z Flip 6 and the Galaxy Z Fold 6 on Samsung's servers.

Samsung is expected to release the second beta version of One UI 8.5 for the Galaxy S25 in the four weeks of this month. After four to five beta releases, Samsung could release the stable update, which could line up with the launch of the Galaxy S26 series in February or March 2026.

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One UI 8.5 is still based on Android 16, but it still brings several new and improved features, including a completely customizable Quick Panel, an improved design language for all the stock apps, Auracast improvements, improvements to the lock screen clock widget and its font options, continuous image generation, Storage Share, Quick Share suggestions while sharing images, and time zone converter in the Clock app.

To know all the things that are new in One UI 8.5, watch our in-depth video below.

Asif Iqbal Shaik - Senior Editor

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First Samsung device: T100

Asif is a computer engineer turned technology journalist. He has been using Samsung phones since 2004, and his current smartphone is the Galaxy S23 Ultra. He loves headphones, mechanical keyboards, and PC hardware. When not writing about technology, he likes watching crime and science fiction movies and TV shows.

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