This update for these galaxy devices has already released by the T-Mobile and Verizon network carriers. It will take some time before all the US unlocked Galaxy S9 and S9+ variants pick up the One UI 2.1 OTA package.
The firmware version of this update is G960U1UEU7ETG1 and G965U1UEU7ETG1 for Galaxy S9 and Galaxy S9+ respectively. As always, this update improves system stability, system performance, and enhanced features.
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To manually check for updates, navigate to Settings > System update. If your system is up-to-date, you don’t need to do anything further. Otherwise, tap Download and install to update your phone.
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