Carrier-locked Samsung Galaxy A23 5G units get Android 13-based One UI 5.0 in the US
Samsung released the Android 13-based One UI 5.0 stable update for the Galaxy A23 5G's international model last December, and towards the end of the month, the rollout was expanded to the unlocked Galaxy A23 5G in the US. Over a month later, the carrier-locked A23 5G units are also receiving the stable One UI 5.0 in the States.
The One UI 5.0 update is currently rolling for the Galaxy A23 5G locked to T-Mobile's network, but devices on other networks should receive it soon. The update has firmware version A236USQS1BWA2 and bumps up the Android security patch level on the Galaxy A23 5G to January 2023.
If you haven't received One UI 5.0 on your Samsung Galaxy A23 5G locked to T-Mobile's network, you can check for it manually by heading to the phone's Settings > Software update menu.