One UI 4 is rolling out for the international variant of the Galaxy S10 Lite, having model code SM-G770F. The firmware has version number G770FXS6FULA and comes with the December 2021 Android security patch.
Additionally, Samsung has released One UI 4 for the W22 5G, which is a custom Galaxy Z Fold3 for China. The firmware for the W22 5G comes with version number W2022ZCU2BULF, and you can expect the usual Android 12 and One UI 4 goodies with it.
If you haven’t received One UI 4 on your smartphone yet, you can check for it manually by navigating to the device’s Settings > Software update menu.