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Samsung’s One UI 9 Test Builds Surface, Hinting at Wider Galaxy Z Fold Variant

Leaked Android 17 builds for upcoming Samsung foldables point to a wider Fold now in active testing.

Overview

  • Tipster Tarun Vats spotted firmware F776USQU0AZB1 on Samsung’s servers, indicating One UI 9 testing for the Galaxy Z Flip 8, with related builds also tied to the Z Fold 8.
  • SamMobile published a very early One UI 9 (Android 17) build for the Galaxy Z Fold 7, cautioning that the leak is unstable and intended only for specific carrier-locked US units.
  • A separate build identified as F971USQU0AZB1 and the model SM-F971U suggest a third, wider Fold is in development, with reports framing this as a variant distinct from the main Fold 8.
  • Early One UI 9 assets include animations depicting the rumored wide Fold, and analysis points to a near-16:10 cover display and roughly 9:7 inner screen—wider than the first Pixel Fold—though final specs remain unconfirmed.
  • Coverage consistently ties One UI 9 to Android 17 (“Cinnamon Bun”) with testing momentum building as Google signals its Android 17 beta is coming soon and Samsung historically targets summer for foldable launches.