After Samsung was done seeding the Android 10 update to the Galaxy S10 series and the Galaxy Note 10 series, it started to push the update to the unlocked versions of the Galaxy Note 9 and the Galaxy S9 in the US. Now, AT&T variants of the Galaxy Note 9, Galaxy S9, and the Galaxy S9+ have started receiving the Android 10 software update.
The biggest cellular carrier in the US has confirmed via its website that it has started rolling out the Android 10-based One UI 2.0 update to the Galaxy S9 (SM-G960U) and Galaxy S9+ (SM-G965U). The Galaxy S9 software version is G960USQU7DTA5, while the Galaxy S9+ software version is G965USQU7DTA5. AT&T has mentioned on its website that the Android 10 OTA update for both the Galaxy S9 devices is around 2GB in size. Apart from Android 10, the update also brings the January 2020 Android security patch to these devices.
Although AT&T hasn't updated its Galaxy Note 9 page yet, multiple users have confirmed on Reddit that they've started receiving the Android 10 update on their devices. It should also get the January 2020 Android security patch, just like the Galaxy S9 series, along with a 2GB firmware file size and Android 10.
Apart from all the usual Android 10 bells and whistles such as Dark mode, newer navigation gestures, fine-tuned privacy and location controls, and new emojis, these phones will also get access to Samsung's additional features as a part of One UI 2.0. You can have a look at the differences between One UI 1.0 and One UI 2.0 in our detailed article.
If you are an AT&T customer who uses the carrier version of the Galaxy S9, Galaxy S9+, or the Galaxy Note 9, be sure to check for the OTA (over-the-air) update by visiting the Settings » Software update section in your device and then clicking the Check for updates button.