Determine your current device software version and check for updates.
INSTRUCTIONS & INFO
ACCESS: From Settings, scroll to and select System > About phone. Here you can view the Android version, and Baseband version.
Note: To access Settings, swipe down from the Notification bar then select the Settings icon. The images and steps in this tutorial reflect the latest software version (Android 8.1). For more information on the latest update available for your device, check att.com/softwareupdates.
CHECK FOR UPDATES: From the System settings screen, select AT&T Software Update. Select Check for Updates.
If an update is available, select Continue and follow the on-screen instructions to perform the update.