Smarty Unlimited data SIM only deals
At Olimit, we help you compare the best unlimited SIM Only deals — all in one place.
Keep your phone, ditch the restrictions.
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If you want no limits on how much data you use, an unlimited data SIM Only deal is the smart choice.
Most UK networks now offer unlimited plans to suit different budgets, so you can stream, scroll, and stay connected without worrying about caps.
Olimit Tips & Tricks
Do I need unlimited data SIM Only deal?
Unlimited data SIMs offer complete freedom, but they often come at a higher monthly cost. Before you commit, think about your usage. The average UK mobile user only uses around 10GB of data per month, so if you mainly browse, message, and stream occasionally, a smaller data plan might save you money.
However, if you’re always streaming Netflix, gaming on the go, using your phone as a hotspot, or working remotely, an unlimited data plan could be the hassle-free option you need. At Olimit, we help you compare unlimited and capped SIM Only deals, so you can find the best match for your data habits and budget.
Can I use my unlimited data SIM abroad?
It depends on the network. Look for 
in the deal listings below — it will show you how much roaming data is included and which countries are covered.
Before you travel, always check your network’s roaming fair usage policy and whether your destination is included. At Olimit, we make it easy to compare unlimited SIM Only deals with roaming included, so you can stay connected abroad without unexpected charges.
Contract Length
Roaming Destinations
Additional
45 Roaming Destinations
12GB
Åland Islands 🇦🇽
Austria 🇦🇹
Azores 🇵🇹
Balearic Islands 🇪🇸
Belgium 🇧🇪
Bulgaria 🇧🇬
Canary Islands 🇮🇨
Comoros & Mayotte 🇾🇹
Croatia 🇭🇷
Cyprus 🇨🇾
Czech Republic 🇨🇿
Denmark 🇩🇰
Estonia 🇪🇪
Finland 🇫🇮
France 🇫🇷
French Guiana 🇬🇫
Germany 🇩🇪
Gibraltar 🇬🇮
Greece 🇬🇷
Guadeloupe 🇬🇵
Hungary 🇭🇺
Iceland 🇮🇸
Ireland 🇮🇪
Italy 🇮🇹
Latvia 🇱🇻
Lithuania 🇱🇹
Luxembourg 🇱🇺
Madeira 🇵🇹
Malta 🇲🇹
Martinique 🇲🇶
Netherlands 🇳🇱
Norway 🇳🇴
Poland 🇵🇱
Portugal 🇵🇹
Réunion 🇷🇪
Romania 🇷🇴
Saint Barthélemy 🇧🇱
Saint Martin 🇲🇫
San Marino 🇸🇲
Slovakia 🇸🇰
Slovenia 🇸🇮
Spain 🇪🇸
Sweden 🇸🇪
Vatican City 🇻🇦
45 Roaming Destinations
12GB
Åland Islands 🇦🇽
Austria 🇦🇹
Azores 🇵🇹
Balearic Islands 🇪🇸
Belgium 🇧🇪
Bulgaria 🇧🇬
Canary Islands 🇮🇨
Comoros & Mayotte 🇾🇹
Croatia 🇭🇷
Cyprus 🇨🇾
Czech Republic 🇨🇿
Denmark 🇩🇰
Estonia 🇪🇪
Finland 🇫🇮
France 🇫🇷
French Guiana 🇬🇫
Germany 🇩🇪
Gibraltar 🇬🇮
Greece 🇬🇷
Guadeloupe 🇬🇵
Hungary 🇭🇺
Iceland 🇮🇸
Ireland 🇮🇪
Italy 🇮🇹
Latvia 🇱🇻
Lithuania 🇱🇹
Luxembourg 🇱🇺
Madeira 🇵🇹
Malta 🇲🇹
Martinique 🇲🇶
Netherlands 🇳🇱
Norway 🇳🇴
Poland 🇵🇱
Portugal 🇵🇹
Réunion 🇷🇪
Romania 🇷🇴
Saint Barthélemy 🇧🇱
Saint Martin 🇲🇫
San Marino 🇸🇲
Slovakia 🇸🇰
Slovenia 🇸🇮
Spain 🇪🇸
Sweden 🇸🇪
Vatican City 🇻🇦
45 Roaming Destinations
12GB
Åland Islands 🇦🇽
Austria 🇦🇹
Azores 🇵🇹
Balearic Islands 🇪🇸
Belgium 🇧🇪
Bulgaria 🇧🇬
Canary Islands 🇮🇨
Comoros & Mayotte 🇾🇹
Croatia 🇭🇷
Cyprus 🇨🇾
Czech Republic 🇨🇿
Denmark 🇩🇰
Estonia 🇪🇪
Finland 🇫🇮
France 🇫🇷
French Guiana 🇬🇫
Germany 🇩🇪
Gibraltar 🇬🇮
Greece 🇬🇷
Guadeloupe 🇬🇵
Hungary 🇭🇺
Iceland 🇮🇸
Ireland 🇮🇪
Italy 🇮🇹
Latvia 🇱🇻
Lithuania 🇱🇹
Luxembourg 🇱🇺
Madeira 🇵🇹
Malta 🇲🇹
Martinique 🇲🇶
Netherlands 🇳🇱
Norway 🇳🇴
Poland 🇵🇱
Portugal 🇵🇹
Réunion 🇷🇪
Romania 🇷🇴
Saint Barthélemy 🇧🇱
Saint Martin 🇲🇫
San Marino 🇸🇲
Slovakia 🇸🇰
Slovenia 🇸🇮
Spain 🇪🇸
Sweden 🇸🇪
Vatican City 🇻🇦
45 Roaming Destinations
12GB
Åland Islands 🇦🇽
Austria 🇦🇹
Azores 🇵🇹
Balearic Islands 🇪🇸
Belgium 🇧🇪
Bulgaria 🇧🇬
Canary Islands 🇮🇨
Comoros & Mayotte 🇾🇹
Croatia 🇭🇷
Cyprus 🇨🇾
Czech Republic 🇨🇿
Denmark 🇩🇰
Estonia 🇪🇪
Finland 🇫🇮
France 🇫🇷
French Guiana 🇬🇫
Germany 🇩🇪
Gibraltar 🇬🇮
Greece 🇬🇷
Guadeloupe 🇬🇵
Hungary 🇭🇺
Iceland 🇮🇸
Ireland 🇮🇪
Italy 🇮🇹
Latvia 🇱🇻
Lithuania 🇱🇹
Luxembourg 🇱🇺
Madeira 🇵🇹
Malta 🇲🇹
Martinique 🇲🇶
Netherlands 🇳🇱
Norway 🇳🇴
Poland 🇵🇱
Portugal 🇵🇹
Réunion 🇷🇪
Romania 🇷🇴
Saint Barthélemy 🇧🇱
Saint Martin 🇲🇫
San Marino 🇸🇲
Slovakia 🇸🇰
Slovenia 🇸🇮
Spain 🇪🇸
Sweden 🇸🇪
Vatican City 🇻🇦
for 6 Months,
49 Roaming Destinations
12GB
Åland Islands (Finland)
Austria
Azores (Portugal)
Balearic Islands (Spain)
Belgium
Bulgaria
Canary Islands (Spain)
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
French Guiana
Germany
Gibraltar
Greece
Guadeloupe
Guernsey
Hungary
Iceland
Ireland
Isle of Man
Italy
Jersey
Latvia
Liechtenstein
Lithuania
Luxembourg
Madeira (Portugal)
Malta
Martinique
Mayotte
Netherlands
Norway
Poland
Portugal
Réunion
Romania
Saint Barthelemy
Saint Martin
San Marino (Italy)
Slovakia
Slovenia
Spain
Sweden
Switzerland
Vatican City
163 Roaming Destinations
12GB
Åland Islands (Finland)
Austria
Azores (Portugal)
Balearic Islands (Spain)
Belgium
Bulgaria
Canary Islands (Spain)
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
French Guiana
Germany
Gibraltar
Greece
Guadeloupe
Guernsey
Hungary
Iceland
Ireland
Isle of Man
Italy
Jersey
Latvia
Liechtenstein
Lithuania
Luxembourg
Madeira (Portugal)
Malta
Martinique
Mayotte
Netherlands
Norway
Poland
Portugal
Réunion
Romania
Saint Barthelemy
Saint Martin
San Marino (Italy)
Slovakia
Slovenia
Spain
Sweden
Switzerland
Vatican City
Australia
Brazil
Chile
Colombia
Costa Rica
El Salvador
Guatemala
Hong Kong (China)
Indonesia
Macao (China)
New Zealand
Nicaragua
Panama
Peru
Puerto Rico
Singapore
Sri Lanka
United States of America (USA)
Uruguay
U.S. Virgin Islands
Vietnam
Albania
Andorra
Anguilla
Antigua and Barbuda
Argentina
Armenia
Aruba (Netherlands Antilles)
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Bermuda
Bonaire (Netherlands Antilles)
Bosnia and Herzegovina
British Virgin Islands
Brunei
Burkina Faso
Cambodia
Cameroon
Canada
Cayman Islands
China
Curaçao (Netherlands Antilles)
Cyprus, North (Turkey)
Côte d’Ivoire (Ivory Coast)
Dominica
Dominican Republic
Ecuador
Egypt
Faroe Islands
Gabon
Georgia
Ghana
Greenland
Grenada
Guinea
Guyana
Haiti
Honduras
India
Jamaica
Japan
Jordan
Kazakhstan
Kenya
Kosovo
Kuwait
Kyrgyzstan
Liberia
Madagascar
Malawi
Malaysia
Mexico
Moldova
Montenegro
Montserrat
Morocco
Myanmar
Niger
Nigeria
North Macedonia
Oman
Pakistan
Paraguay
Qatar
Rwanda
Saba (Netherlands Antilles)
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and the Grenadines
Saudi Arabia
Senegal
Serbia
Seychelles
Sint Eustatius (Netherlands Antilles)
Sint Maarten (Netherlands Antilles)
South Africa
South Korea
Suriname
Taiwan
Tajikistan
Thailand
Trinidad and Tobago
Tunisia
Turkey
Turks and Caicos Islands
Uganda
Ukraine
United Arab Emirates (UAE)
Uzbekistan
Zambia
