1. From the AT&T Manager Website, click the
arrow beneath Settings.
![Step 1](https://www.att.com/devicehowtomedia/image/att-global-modem-usb800/9007010_01.jpg)
2. Click
SIM then click
Turn on SIM PIN Lock.
![Step 2](https://www.att.com/devicehowtomedia/image/att-global-modem-usb800/9007010_02.jpg)
3. Enter the
Current PIN, then click
Save changes.
![Step 3](https://www.att.com/devicehowtomedia/image/att-global-modem-usb800/9007010_03.jpg)
4. To change the SIM PIN, click
Change SIM PIN.
![Step 4](https://www.att.com/devicehowtomedia/image/att-global-modem-usb800/9007010_04.jpg)
5. Enter the
Current PIN, then enter and confirm the desired
PIN. Click
Save changes.
![Step 5](https://www.att.com/devicehowtomedia/image/att-global-modem-usb800/9007010_05.jpg)