1. RESET AT&T WIRELESS INTERNET: From the back of the device, press and hold the RESET button for 15 seconds using a pen, paperclip, or SIM removal tool. 

Step 1

2. RESET USING WIRELESS INTERNET MANAGER: From a device that is connected to the AT&T Wireless Internet network, open the web browser and go to http://attwirelessinternet. Enter your Login, then click LOGIN.

Step 2

3. Click the System tab then click Configuration. Click PERFORM RESET to perform a factory data reset.

Note: You will be prompted to click OK to confirm. 

Step 3