16 
 
Configure SIM PIN 
Enable SIM PIN: 
1.  On the AT&T USB Modem configuration page. 
2.  Click Settings > Advanced > SIM PIN. 
3.  Click Enable next to PIN Status. 
Verifying the PIN Code: 
If the PIN code of your nano-SIM card is enabled, you will need to input the PIN 
code when you log in at the first time. 
 
  NOTE:   
The SIM card will be locked if you enter wrong PIN code consecutively for three 
times. 
If you want to modify the PIN Status, select Settings > Advanced > Change PIN 
to do the actions.