AT&T Galaxy Note 9 getting a new software update in the US. The latest update brings the October 2018 Android security patch and a few other improvements.
The Galaxy Note 9 also received a major camera-related update recently, although it did not include a newer security patch. AT&T users are receiving this update on the software version is N960USQU1ARJ2
If you didn’t get the notification of this update, To check this update manually open the setting of your device, and tap Software update, then tap Download updates manually or update your phone to new security patch.