71 countries included with THREE.co.uk sim cards

Austria

Australia

Belgium Brazil

Bulgaria

Channel Islands

(Includes Jersey, Guernsey, Herm and Sark)

Chile Croatia

Colombia Costa Rica

Cyprus Czech Republic

Denmark El Salvador

Estonia

Finland

(includes Aland Islands)

France

(Including Corsica, Mayotte and Reunion)

French West Indies

(Including French Guiana, Guadeloupe,

Martinique, Saint Martin, Saint Barthelemy,

Les Saintes, Marie-Galante and La Desirade)

Germany Gibraltar

Greece Guatemala

Hong Kong Hungary

Iceland Indonesia

Isle of Man Israel

Italy

(Including Vatican City, Sardinia and Sicily)

Latvia

Liechtenstein Lithuania

Luxembourg Macau

Malta Netherlands

New Zealand Nicaragua

Norway Panama

Peru Poland

Portugal

(Including Madeira and the Azores)

Republic of Ireland

Romania San Marino

Singapore Slovakia

Slovenia

Spain

(Including the Canary Islands and Balearic

Islands)

Sri Lanka Sweden

Switzerland Uruguay

United States

(including Hawaii, Puerto Rico and US Virgin

Islands)

Vietnam