Samsung’s Android 17-based One UI 9 rollout just got much bigger in the US

TL;DR Samsung’s stable One UI 9 update is rolling out to Galaxy S24-series users in the US. The rollout is also reaching Galaxy Z Fold 6 and Z Flip 6 users, including factory-unlocked US models. The update weighs about 4GB, includes the September 2026 security patch, and is also expanding to other markets.