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Samsung Starts One UI 8 Rollout as Leaks Tease One UI 8.5 and Early One UI 9 Work

Installing app updates immediately after upgrading helps One UI 8 deliver stronger security with improved battery life.

Overview

  • The stable build has begun reaching the Galaxy S25 series with a phased expansion to additional models to follow.
  • One UI 8 is based on Android 16, which raises security requirements and pushes developers to update apps for the new APIs and system behavior.
  • After installing the update, users are advised to refresh all apps via the Galaxy Store or Google Play to ensure performance, compatibility and battery benefits.
  • A leaked internal build attributed to developer @Feruzbek_101 shows proposed One UI 8.5 changes, including pill-shaped navigation, a new boot logo, a more compact settings layout and refreshed Themes and Studio interfaces.
  • Chip.de reports that One UI 8.5 is expected in early 2026 alongside the Galaxy S26, while code hints suggest work on One UI 9 based on Android 17 is already underway.