Samsung, as committed to the software updates, has started releasing OneUI 3.1.1 for the Galaxy S21 series. Do note, not all Galaxy devices will get OneUI 3.1.1, instead will start receiving OneUI 4.0 once ready.
The new features include some of the handy features, for example, Bedtime mode, an enhanced camera app, a new weather app, and a new security patch. The update is currently rolling out for the USA from T-Mobile, and Canada. The T-Mobile devices are receiving an extra feature called VoNR or Voice over Network Radio. More markets to get this update soon. The firmware version is G99*WVLU4AUGQ. Meanwhile, it’s about time Samsung starts with OneUI 4.0 Beta testing.