![Update: US rollout schedule] Samsung reveals the One UI 4.0 upgrade rollout schedule for its devices Update: US rollout schedule] Samsung reveals the One UI 4.0 upgrade rollout schedule for its devices](https://static1.xdaimages.com/wordpress/wp-content/uploads/2021/09/One-UI-4-Beta-home-screen-on-Galaxy-S21.jpg)
Update: US rollout schedule] Samsung reveals the One UI 4.0 upgrade rollout schedule for its devices
![Samsung's stable Android 12-based One UI 4.0 update is here for the Galaxy S21 5G series - PhoneArena Samsung's stable Android 12-based One UI 4.0 update is here for the Galaxy S21 5G series - PhoneArena](https://m-cdn.phonearena.com/images/article/136430-wide-two_1200/Samsungs-stable-Android-12-based-One-UI-4.0-update-is-here-for-the-Galaxy-S21-5G-series.jpg)
Samsung's stable Android 12-based One UI 4.0 update is here for the Galaxy S21 5G series - PhoneArena
![Galaxy S20 Android 12 (One UI 4.0) Update Tracker: Release Date, New Features & More - TechieTechTech Galaxy S20 Android 12 (One UI 4.0) Update Tracker: Release Date, New Features & More - TechieTechTech](https://media.techietech.tech/2021/08/Galaxy-S20-Android-12-OneUI-4.0-Update-Tracker-Release-Date-New-Features-.jpg)
Galaxy S20 Android 12 (One UI 4.0) Update Tracker: Release Date, New Features & More - TechieTechTech
![One UI 4.0 stable update will start rolling out in December, according to a Galaxy S community moderator - PhoneArena One UI 4.0 stable update will start rolling out in December, according to a Galaxy S community moderator - PhoneArena](https://m-cdn.phonearena.com/images/articles/380704-image/samsung-one-ui-4-0-beta-2-material-you-461x1024.jpg)