STEP 1:

Insert the 3G modem on your PC and disable the SIM PIN code. This is usually found under Tools>>Options.

STEP 2:

Insert the 3G modem on your router.

STEP 3:

In web browser (IE or Firefox) access the menu page of the router (default IP address is http://192.168.1.1) 

STEP 4:

Go to WAN >> Internet Access Setup page

STEP 5:

Enter the following details

  1. APN Name: preconnect
  2. Click [OK] button

STEP 6:

Check Online Status page that 3G connection has come up.