How to set up your device as a mobile hotspot to share your data connection with Wi-Fi-capable devices.
INSTRUCTIONS & INFO
Use your AT&T device as a mobile Wi-Fi hotspot to share your data connection with Wi-Fi-capable devices such as: other smartphones, tablets, netbooks, MP3 players, and more. Note: Eligible data plan required, learn more.
From the home screen, tap Apps.
Swipe to, then tap Mobile Hotspot.
Tap Configure.
Edit the desired options, then tap Save.
Tap the Mobile Hotspot switch to enable and disable the mobile wi-fi hotspot.
While the wi-fi hotspot is enabled, the Wi-Fi Hotspot icon will be displayed in the notifications bar.