Did your signal lights just turn blue? Chances are your router performed a firmware update. Follow these simple steps to fix your router:
Ensure you are connected to your ATT-WI-xxxx wireless network
Open your browser.
Go to 192.168.0.1
Login with the password attadmin
Click settings on the left
Click network at top
Then APN towards the Right
Click “Add” at the bottom
Type Broadband into the Profile Name
Type Broadband into APN
Click Save at the bottom
Click dropdown on Profile Selection and select broadband
Click “Set Default” at bottom
Power router off, then back on.