Cellular Carrier Options
Let's just say, most of the known world.
WTI has three cellular modem options, for the United States we have a Verizon cellular modem, for North America (including the U.S., Canada and Mexico) we have the AT&T cellular modem and the third one WTI has is the World cellular modem, that covers the rest of the known world.
Here are the tech specs for:
Verizon Cellular Modem:
700(B13)/AWS1700(B4)
Check the Verizon Frequency Locator
AT&T Cellular Modem:
4G: 700(B17)/850(B5)/AWS1700(B4)/1900(B2)
3G: 850(B5)/1900(B2)
2G: 850/1800
Check the AT&T Frequency Locator
World Cellular Modem:
4G: 800(B20)/1800(B3)/2600(B7)
3G: 850(B5)/900(B8)/2100(B1)
2G: 900/1800
4G: Map of the B7-2600 Frequency
4G: Map of the B3-1800 Frequency
4G: Map of the B20-800 Frequency
3G: Map of the B1-2100 Frequency
3G: Map of the B8-900 Frequency
3G: Map of the B5-850 Frequency
Map of worldwide frequency by countries