Country	GSM Frequency Usage (Multiple lines of frequencies indicate different sets of frequencies being used by different carriers.)	Approx. number of GSM cell phone carriers using listed frequencies
Afghanistan	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Albania	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Algeria	GSM 900	1 carrier
	GSM 900/1800	2 carriers
Andorra	GSM 900	1 carrier
Angola	GSM 900	1 carrier
Antigua and Barbuda	GSM 900	1 carrier
	GSM 1900	1 carrier
Argentina	GSM 1900	2 carriers
Armenia	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Aruba	GSM 900	1 carrier
	GSM 900/1800	1 carrier
	GSM 1900	1 carrier
Australia	GSM 900/1800	3 carriers
Austria	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Azerbaijan	GSM 900	2 carriers
Bahamas	GSM 1900	1 carrier
Bahrain	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Bangladesh	GSM 900	3 carriers
Barbados	GSM 1900	1 carrier
	GSM 900/1900	1 carrier
Belarus	GSM 900/1800	2 carriers
Belgium	GSM 900/1800	2 carriers
	GSM 1800	1 carrier
Belize	GSM 1900	1 carrier
Benin	GSM 900	3 carriers
Bermuda	GSM 1900	2 carriers
Bhutan	GSM 900	1 carrier
Bolivia	GSM 1900	2 carriers
Bosnia and Herzegovina	GSM 900	3 carriers
Botswana	GSM 900	2 carriers
Brazil	GSM 900/1800	1 carrier
	GSM 1800	10 carriers
British Virgin Islands	GSM 900/1900	1 carrier
Brunei	GSM 900	1 carrier
Bulgaria	GSM 900/1800	1 carrier
	GSM 900	1 carrierr
Burkina Faso	GSM 900	2 carriers
Burundi	GSM 900	3 carriers
Cambodia	GSM 900	2 carriers
	GSM 1800	1 carrier
Cameroon	GSM 900	2 carriers
Canada	GSM 850/1900	1 carrier
	GSM 1900	1 carrier
Cape Verde	GSM 900	1 carrier
Cayman Islands	GSM 850/1900	2 carriers
Central African Republic	GSM 900	2 carriers
Chad	GSM 900	1 carrier
Chile	GSM 1900	3 carriers
China	GSM 900	2 carriers
Colombia	GSM 850	2 carriers
	GSM 1900	1 carrier
	GSM 850/1900	1 carrier
Congo, Republic of	GSM 900	2 carriers
Congo, Democratic Republic of	GSM 900	1 carrier
	GSM 1800	1 carrier
	GSM 900/1800	2 carriers
Cook Islands	GSM 900	1 carrier
Costa Rica	GSM 1800	1 carrier
Côte d'Ivoire	GSM 900	2 carriers
Croatia	GSM 900	2 carriers
Cuba	GSM 900	1 carrier
Cyprus	GSM 900/1800	2 carriers
Czech Republic	GSM 900/1800	3 carriers
Denmark	GSM 900/1800	4 carriers
Djibouti	GSM 900	1 carrier
Dominica	GSM 900/1900	1 carrier
Dominican Republic	GSM 1800/1900	1 carrier
East Timor	GSM 900	1 carrier
Ecuador	GSM 850	1 carrier
Egypt	GSM 900	2 carriers
El Salvador	GSM 850	1 carrier
	GSM 900	1 carrier
	GSM 1800	1 carrier
Equatorial Guinea	GSM 900	1 carrier
Eritrea	GSM 900	1 carrier
Estonia	GSM 900/1800	3 carriers
Ethiopia	GSM 900	1 carrier
Faroe Islands	GSM 900	2 carriers
Fiji	GSM 900	1 carrier
Finland	GSM 900	1 carrier
	GSM 900/1800	3 carriers
France	GSM 900	1 carrier
	GSM 900/1800	2 carriers
French Polynesia	GSM 900	1 carrier
French West Indies	GSM 900	2 carriers
	GSM 900/1800	2 carriers
Gabon	GSM 900	2 carriers
Gambia	GSM 900	2 carriers
Georgia	GSM 900/1800	2 carriers
Germany	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Ghana	GSM 900	3 carriers
Gibraltar	GSM 900	1 carrier
Greece	GSM 900/1800	1 carrier
	GSM 900	2 carriers
	GSM 1800	1 carrier
Greenland	GSM 900	1 carrier
Grenada	GSM 900/1800	1 carrier
	GSM 900/1900	1 carrier
Guam	GSM 850/1900	1 carrier
	GSM 1900	1 carrier
Guatemala	GSM 850	1 carrier
	GSM 1900	2 carriers
Guernsey	GSM 900	1 carrier
	GSM 1800	1 carrier
Guinea	GSM 900	3 carriers
Guinea Bissau	GSM 900	1 carrier
Guyana	GSM 900	2 carriers
Haiti	GSM 850	1 carrier
Holland	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Honduras	GSM 850	1 carrier
	GSM 1900	1 carrier
Hong Hong	GSM 900/1800	3 carriers
	GSM 1800	3 carriers
Hungary	GSM 900/1800	3 carriers
Iceland	GSM 900/1800	1 carrier
	GSM 900	1 carrier
	GSM 1800	1 carrier
India	GSM 900	5 carriers
	GSM 900/1800	3 carriers
Indonesia	GSM 900/1800	3 carriers
	GSM 1800	1 carrier
Iran	GSM 900	4 carriers
Iraq	GSM 900	5 carriers
Ireland	GSM 900/1800	3 carriers
Isle of Man	GSM 900	1 carrier
Israel	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Italy	GSM 900/1800	3 carriers
Jamaica	GSM 900/1800/1900	1 carrier
Jersey	GSM 900/1800	1 carrier
Jordan	GSM 900	2 carriers
	GSM 1800	1 carrier
Kazakhstan	GSM 900	2 carriers
Kenya	GSM 900	2 carriers
Kiribati	GSM 900	1 carrier
Korea, North	GSM 900	1 carrier
Kuwait	GSM 900/1800	2 carriers
Kyrgyzstan	GSM 900	1 carrier
Laos	GSM 900	2 carriers
	GSM 900/1800	2 carriers
Latvia	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Lebanon	GSM 900	2 carriers
Lesotho	GSM 900	2 carriers
Liberia	GSM 900	3 carriers
	GSM 900/1800	1 carrier
Libya	GSM 900	1 carrier
Liechtenstein	GSM 900	1 carrier
	GSM 1800	2 carriers
	GSM 900/1800	1 carrier
Lithuania	GSM 900	2 carriers
	GSM 900/1800	1 carrier
Luxembourg	GSM 900/1800	2 carriers
	GSM 1800	1 carrier
Macau	GSM 900/1800	3 carriers
Macedonia (formerly Yugoslavia)	GSM 900	2 carriers
Madagascar	GSM 900	2 carriers
Malawi	GSM 900	2 carriers
Malaysia	GSM 900/1800	2 carriers
	GSM 1800	1 carrier
Maldives	GSM 900	2 carriers
Mali	GSM 900	2 carriers
Malta	GSM 900	1 carrier
	GSM 1800	1 carrier
Mauritania	GSM 900	2 carriers
Mauritius	GSM 900	2 carriers
Mexico	GSM 1900	2 carriers
Micronesia	GSM 900	1 carrier
Moldova	GSM 900	2 carriers
Monaco	GSM 900	1 carrier
Mongolia	GSM 900	1 carrier
Montserrat	GSM 850	1 carrier
Morocco	GSM 900	2 carriers
Mozambique	GSM 900/1800	1 carrier
Myanmar	GSM 900	1 carrier
Namibia	GSM 900/1800	1 carrier
Nepal	GSM 900	1 carrier
Netherlands	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Netherlands Antilles	GSM 900/1800	2 carriers
	GSM 900	2 carriers
New Caledonia	GSM 900	1 carrier
New Zealand	GSM 900	1 carrier
Nicaragua	GSM 1900	1 carrier
Niger	GSM 900	3 carriers
Nigeria	GSM 900/1800	4 carriers
Northern Mariana Islands	GSM 1900	1 carrier
Norway	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Oman	GSM 900	2 carriers
Pakistan	GSM 900	2 carriers
	GSM 900/1800	3 carriers
Palestinian Territory	GSM 900	1 carrier
Panama	GSM 850	2 carriers
Papua New Guinea	GSM 900	1 carrier
Paraguay	GSM 1900	2 carriers
	GSM 850	1 carrier
	GSM 1900/850	1 carrier
Peru	GSM 1900	1 carrier
Philippines	GSM 900/1800	2 carriers
	GSM 900	1 carrier
	GSM 1800	1 carrier
Poland	GSM 900/1800	3 carriers
Portugal	GSM 900/1800	3 carriers
Qatar	GSM 900/1800	1 carrier
Reunion	GSM 900/1800	1 carrier
	GSM 900	1 carrier
Romania	GSM 900/1800	1 carrier
	GSM 900	1 carrier
	GSM 1800	1 carrier
Russia	GSM 900	9 carriers
	GSM 1800	7 carriers
	GSM 900/1800	12 carriers
Rwanda	GSM 900	1 carrier
São Tomé and Príncipe	GSM 900	1 carrier
Saudi Arabia	GSM 900	2 carriers
Senegal	GSM 900	2 carriers
Serbia	GSM 900/1800	2 carriers
	GSM 900	2 carriers
Seychelles	GSM 900	2 carriers
	GSM 850/900/1800	1 carrier
Sierra Leone	GSM 900	2 carriers
Singapore	GSM 900	2 carriers
	GSM 1800	1 carrier
Slovakia	GSM 900	1 carrier
	GSM 900/1800	1 carrier
Slovenia	GSM 900/1800	2 carriers
	GSM 1800	1 carrier
Soloman Islands	GSM 900	1 carrier
Somalia	GSM 900	3 carriers
	GSM 900/1800	1 carriers
South Africa	GSM 900	2 carriers
	GSM 1800	1 carrier
Spain	GSM 900/1800	2 carriers
	GSM 1800	1 carrier
Sri Lanka	GSM 900	3 carriers
	GSM 1800	1 carrier
St. Kitts and Nevis	GSM 850/1900	1 carrier
St. Lucia	GSM 900/1800/1900	1 carrier
	GSM 900/1900	1 carrier
	GSM 850	1 carrier
St. Pierre and Miquelon	GSM 900	1 carrier
St. Vincent and the Grenadines	GSM 900/1800	1 carrier
	GSM 900/1900	1 carrier
	GSM 850	1 carrier
Sudan	GSM 900/1800	1 carrier
	GSM 900	1 carrier
Suriname	GSM 900/1800	1 carrier
Swaziland	GSM 900	1 carrier
Sweden	GSM 900/1800	2 carriers
	GSM 900	2 carriers
Switzerland	GSM 900/1800	2 carriers
	GSM 1800	3 carriers
Syria	GSM 900/1800	2 carriers
	GSM 900	1 carrier
Tahiti	GSM 900	1 carrier
Taiwan	GSM 900	1 carrier
	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
Tajikistan	GSM 900	3 carriers
	GSM 900/1800	1 carriers
Tanzania	GSM 900/1800	2 carriers
	GSM 900	1 carrier
	GSM 900/1800/400	1 carrier
Thailand	GSM 1800	3 carriers
	GSM 900	1 carrier
	GSM 1900	1 carrier
Togo	GSM 900	2 carriers
Tonga	GSM 900	2 carriers
Trinidad and Tobago	GSM 1800	1 carrier
Tunisia	GSM 900	2 carriers
Turkey	GSM 900	2 carriers
	GSM 1800	1 carrier
Turkmenistan	GSM 900	1 carrier
Turks and Caicos Islands	GSM 850	1 carrier
Uganda	GSM 900	3 carriers
Ukraine	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
	GSM 900	1 carrier
United Arab Emirates	GSM 900	1 carrier
United Kingdom	GSM 900/1800	2 carriers
	GSM 1800	2 carriers
United States	GSM 1900	18 carriers
	GSM 850	14 carriers
	GSM 1900/850	4 carriers
Uruguay	GSM 1800	1 carrier
Uzbekistan	GSM 900/1800	2 carriers
	GSM 900	1 carrier
Vanuatu	GSM 900	1 carrier
Venezuela	GSM 900	3 carriers
Vietnam	GSM 900	3 carriers
	GSM 900/1800	1 carrier
Yemen	GSM 900	2 carriers
Zambia	GSM 900	3 carriers
Zimbabwe	GSM 900	3 carriers