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SMS Guidelines
Guidelines
SMS works differently in every country. See how it works in your country.

Afghanistan

Albania

Algeria

American Samoa

Andorra

Angola

Anguilla

Antigua and Barbuda

Argentina

Armenia

Aruba

Australia

Austria

Azerbaijan

Bahamas

Bahrain

Bangladesh

Barbados

Belarus

Belize

Benin

Bermuda (UK)

Bhutan

Bolivia

Bosnia and Herzegovina

Botswana

British Virgin Islands (UK)

Brunei

Bulgaria

Burkina Faso

Burundi

Cambodia

Cameroon

Canada

Cape Verde

Cayman Islands (UK)

Central African Republic

Chad

Chile

China

Colombia

Comoros

Cook Islands (CK)

Costa Rica(CR)

Croatia(HR)

Cuba

Cyprus (CY)

Czech Democratic Republic of the Congo

Czech Republic(CZ)

Denmark

Djibouti

Dominica

Dominica Republic

Ecuador

Egypt

El Salvador

Equatorial Guinea

Eritrea

Estonia

Ethiopia

Faroe Islands

Fiji

French Guiana

French Polynesia

Gabon

Gambia

Georgia

Ghana

Gibraltar

Greece

Greenland (Denmark)

Grenada

Guadeloupe

Guam

Guatemala

Guernsey

Guinea (GN)

Guinea-Bissau

Guyana

Haiti

Honduras

Hong Kong

Hungary

Iceland

India

Indonesia

Iraq

Ireland

Israel

Italy

Ivory Coast

Jamaica

Jersey

Kazakhstan

Kenya

Kosovo

Kuwait

Kyrgyzstan

Laos

Lebanon

Lesotho

Liberia

Libya

Liechtenstein

Lithuania

Luxembourg

Macao

Macedonia

Madagascar

Malawi

Malaysia

Maldives

Mali

Malta

Marshall Islands

Martinique

Mauritania

Micronesia

Moldova

Monaco

Mongolia

Montenegro

Montserrat (UK)

Myanmar

Namibia

Nepal

Netherlands

Netherlands Antilles (Netherlands)

New Caledonia (France)

New Zealand

Nicaragua

Niger

Nigeria

Niue

Norfolk Island

Poland

Puerto Rico (US)

Qatar

Romania

Saudi Arabia

SENEGAL

Serbia

Slovakia

Solomon Islands

South Korea

South Sudan

Switzerland

Syria

Timor-Leste

Togo

Trinidad and Tobago

United Arab Emirates

Vietnam

Zimbabwe
Both Calilio and its customers must follow local phone number regulations when transferring numbers between service providers. To support compliance and reduce the risk of service disruption, we provide a country-by-country guide to phone number porting requirements.
Local regulations may require identity verification, proof of number ownership, or business documentation before a carrier can approve a porting request. To avoid delays or urgent escalations, please provide complete and accurate information for the selected country and number type.
Frequently asked questions
What is a business phone service?
A business phone service is a communication solution that delivers Voice over Internet Protocol technology for voice communication over the Internet. Calilio offers a robust and reliable VoIP service that elevates business communications.

Still have questions?
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