Overview

• The stable Android 16–based One UI 8 update is live for the Galaxy S25 lineup in select markets, with Samsung confirming broader availability will follow in stages.
• Official schedules from Samsung Korea and Samsung Brazil list rollout windows across September to November for Galaxy S, Galaxy Z, Galaxy A, and Galaxy Tab devices, with timing varying by country and carrier.
• Brazil’s plan starts September 18 for S25 models, adds S24 and Z Fold6/Flip6 from September 25, and moves to S23 and S22 families in early October, alongside A‑series waves through late October.
• Tablet timelines include Tab S10 series from October 2, Tab S9 series from October 6, and Tab S8 series from October 16, according to Samsung Brazil.
• Key additions center on Gemini‑powered multimodal AI features such as Gemini Live, Now Bar/Now Brief, and Circle to Search, alongside strengthened security with Knox Enhanced Encrypted Protection and Knox Matrix; users can update via Settings and should back up data as package sizes vary.