Click below link to view the
worldwide service provider APN (access point name).
Normally we require to create a profile for current service provider
(current sim card) to enable the GPRS/3G/UMTS Internet surfing.
Every USB Stick/Dongle need to create a profile for their telco before
enable them to connect.
Here is the link for worldwide telco APN setting for your reference.
http://www.comfortsurf.com/download/Mobile%20APN%20Setting%20to%20use%20GPRS.htm
Thanks.