• 2 min read
Samsung starts testing One UI 8.5 for Galaxy S26
A new Samsung test build, U4AZG7, has appeared on company servers for the Galaxy S26 series, pointing to One UI 8.5 on Android 16.
Image: iXBT
Samsung has begun testing a new One UI 8.5 firmware build for the Galaxy S26 series, according to leaker Tarun Vats, who spotted a fresh test build — U4AZG7 — on the company’s servers. It replaces the current stable version, S4AZG5.
A published screenshot indicates the firmware is based on Android 16 and uses bootloader version v4. The release is expected to include the August Android security patch, along with bug fixes and broader system stability improvements.
Samsung has not officially announced a release date for the new firmware. Still, the appearance of a test build suggests the update is getting close.
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The source notes that Tarun Vats previously accurately reported that the One UI 8.0 beta would arrive earlier than planned, and also revealed the release dates for the Galaxy S24 and Galaxy S25. It adds that he has also regularly reported the rollout of new One UI 8.5 versions with accuracy.
Gadgets Editor
Eli is obsessed with the tangible future. He reviews phones, wearables, and everything with a battery. Known for his rigorous testing protocols and unabashed teardowns, Eli has broken more review units than he cares to admit, all in the name of discovering the truth about durability and repairability.
via iXBT
