Discover the best Three SIM-only unlimited data plans in the UK. Whether youโre streaming, gaming, or browsing, these plans give you complete freedom without worrying about running out of data.
Why Choose Three for Unlimited SIM Plans?
- Unlimited Data: Stream, browse, and game without restrictions.
- 5G & 4G Network: Fast speeds across the UK.
- Flexible Contracts: 12-month plans or rolling contracts depending on your needs.
- Extras: Go Roam in 71 destinations, no hidden fees, and data sharing options.
- Customer Support: Highly rated service with easy plan management online.
Top Features of Three Unlimited SIM Plans
- eSIM available for instant activation.
- Unlimited calls and texts included.
- Compatible with all unlocked phones.
- Easy upgrade or plan changes anytime.
- Access to Threeโs 5G network at no extra cost.
Compare All Three Unlimited Data SIM Deals
Below is our handpicked list of all current Three unlimited SIM plans.
163 Roaming Destinations
12GB
๐ฆ๐ฝ ร land Islands (Finland)
๐ฆ๐น Austria
๐ต๐น Azores (Portugal)
๐ช๐ธ Balearic Islands (Spain)
๐ง๐ช Belgium
๐ง๐ฌ Bulgaria
๐ช๐ธ Canary Islands (Spain)
๐ญ๐ท Croatia
๐จ๐พ Cyprus
๐จ๐ฟ Czech Republic
๐ฉ๐ฐ Denmark
๐ช๐ช Estonia
๐ซ๐ฎ Finland
๐ซ๐ท France
๐ฌ๐ซ French Guiana
๐ฉ๐ช Germany
๐ฌ๐ฎ Gibraltar
๐ฌ๐ท Greece
๐ฌ๐ต Guadeloupe
๐ฌ๐ฌ Guernsey
๐ญ๐บ Hungary
๐ฎ๐ธ Iceland
๐ฎ๐ช Ireland
๐ฎ๐ฒ Isle of Man
๐ฎ๐น Italy
๐ฏ๐ช Jersey
๐ฑ๐ป Latvia
๐ฑ๐ฎ Liechtenstein
๐ฑ๐น Lithuania
๐ฑ๐บ Luxembourg
๐ต๐น Madeira (Portugal)
๐ฒ๐น Malta
๐ฒ๐ถ Martinique
๐พ๐น Mayotte
๐ณ๐ฑ Netherlands
๐ณ๐ด Norway
๐ต๐ฑ Poland
๐ต๐น Portugal
๐ท๐ช Rรฉunion
๐ท๐ด Romania
๐ง๐ฑ Saint Barthelemy
๐ซ๐ท Saint Martin
๐ธ๐ฒ San Marino (Italy)
๐ธ๐ฐ Slovakia
๐ธ๐ฎ Slovenia
๐ช๐ธ Spain
๐ธ๐ช Sweden
๐จ๐ญ Switzerland
๐ป๐ฆ Vatican City
๐ฆ๐บ Australia
๐ง๐ท Brazil
๐จ๐ฑ Chile
๐จ๐ด Colombia
๐จ๐ท Costa Rica
๐ธ๐ป El Salvador
๐ฌ๐น Guatemala
๐ญ๐ฐ Hong Kong (China)
๐ฎ๐ฉ Indonesia
๐ฒ๐ด Macao (China)
๐ณ๐ฟ New Zealand
๐ณ๐ฎ Nicaragua
๐ต๐ฆ Panama
๐ต๐ช Peru
๐ต๐ท Puerto Rico
๐ธ๐ฌ Singapore
๐ฑ๐ฐ Sri Lanka
๐บ๐ธ United States of America (USA)
๐บ๐พ Uruguay
๐ป๐ฎ U.S. Virgin Islands
๐ป๐ณ Vietnam
๐ฆ๐ฑ Albania
๐ฆ๐ฉ Andorra
๐ฆ๐ฌ Anguilla
๐ฆ๐ฌ Antigua and Barbuda
๐ฆ๐ท Argentina
๐ฆ๐ฒ Armenia
๐ฆ๐ผ Aruba (Netherlands Antilles)
๐ฆ๐ฟ Azerbaijan
๐ง๐ธ Bahamas
๐ง๐ญ Bahrain
๐ง๐ฉ Bangladesh
๐ง๐ง Barbados
๐ง๐ฒ Bermuda
๐ง๐ด Bonaire (Netherlands Antilles)
๐ง๐ฆ Bosnia and Herzegovina
๐ป๐ฌ British Virgin Islands
๐ง๐ณ Brunei
๐ง๐ซ Burkina Faso
๐ฐ๐ญ Cambodia
๐จ๐ฒ Cameroon
๐จ๐ฆ Canada
๐ฐ๐พ Cayman Islands
๐จ๐ณ China
๐จ๐ผ Curaรงao (Netherlands Antilles)
๐น๐ท Cyprus, North (Turkey)
๐จ๐ฎ Cรดte dโIvoire (Ivory Coast)
๐ฉ๐ฒ Dominica
๐ฉ๐ด Dominican Republic
๐ช๐จ Ecuador
๐ช๐ฌ Egypt
๐ซ๐ด Faroe Islands
๐ฌ๐ฆ Gabon
๐ฌ๐ช Georgia
๐ฌ๐ญ Ghana
๐ฌ๐ฑ Greenland
๐ฌ๐ฉ Grenada
๐ฌ๐ณ Guinea
๐ฌ๐พ Guyana
๐ญ๐น Haiti
๐ญ๐ณ Honduras
๐ฎ๐ณ India
๐ฏ๐ฒ Jamaica
๐ฏ๐ต Japan
๐ฏ๐ด Jordan
๐ฐ๐ฟ Kazakhstan
๐ฐ๐ช Kenya
๐ฝ๐ฐ Kosovo
๐ฐ๐ผ Kuwait
๐ฐ๐ฌ Kyrgyzstan
๐ฑ๐ท Liberia
๐ฒ๐ฌ Madagascar
๐ฒ๐ผ Malawi
๐ฒ๐พ Malaysia
๐ฒ๐ฝ Mexico
๐ฒ๐ฉ Moldova
๐ฒ๐ช Montenegro
๐ฒ๐ธ Montserrat
๐ฒ๐ฆ Morocco
๐ฒ๐ฒ Myanmar
๐ณ๐ช Niger
๐ณ๐ฌ Nigeria
๐ฒ๐ฐ North Macedonia
๐ด๐ฒ Oman
๐ต๐ฐ Pakistan
๐ต๐พ Paraguay
๐ถ๐ฆ Qatar
๐ท๐ผ Rwanda
๐ง๐ถ Saba (Netherlands Antilles)
๐ฐ๐ณ Saint Kitts and Nevis
๐ฑ๐จ Saint Lucia
๐ป๐จ Saint Vincent and the Grenadines
๐ธ๐ฆ Saudi Arabia
๐ธ๐ณ Senegal
๐ท๐ธ Serbia
๐ธ๐จ Seychelles
๐ง๐ถ Sint Eustatius (Netherlands Antilles)
๐ง๐ถ Sint Maarten (Netherlands Antilles)
๐ฟ๐ฆ South Africa
๐ฐ๐ท South Korea
๐ธ๐ท Suriname
๐น๐ผ Taiwan
๐น๐ฏ Tajikistan
๐น๐ญ Thailand
๐น๐น Trinidad and Tobago
๐น๐ณ Tunisia
๐น๐ท Turkey
๐น๐จ Turks and Caicos Islands
๐บ๐ฌ Uganda
๐บ๐ฆ Ukraine
๐ฆ๐ช United Arab Emirates (UAE)
๐บ๐ฟ Uzbekistan
๐ฟ๐ฒ Zambia
163 Roaming Destinations
12GB
๐ฆ๐ฝ ร land Islands (Finland)
๐ฆ๐น Austria
๐ต๐น Azores (Portugal)
๐ช๐ธ Balearic Islands (Spain)
๐ง๐ช Belgium
๐ง๐ฌ Bulgaria
๐ช๐ธ Canary Islands (Spain)
๐ญ๐ท Croatia
๐จ๐พ Cyprus
๐จ๐ฟ Czech Republic
๐ฉ๐ฐ Denmark
๐ช๐ช Estonia
๐ซ๐ฎ Finland
๐ซ๐ท France
๐ฌ๐ซ French Guiana
๐ฉ๐ช Germany
๐ฌ๐ฎ Gibraltar
๐ฌ๐ท Greece
๐ฌ๐ต Guadeloupe
๐ฌ๐ฌ Guernsey
๐ญ๐บ Hungary
๐ฎ๐ธ Iceland
๐ฎ๐ช Ireland
๐ฎ๐ฒ Isle of Man
๐ฎ๐น Italy
๐ฏ๐ช Jersey
๐ฑ๐ป Latvia
๐ฑ๐ฎ Liechtenstein
๐ฑ๐น Lithuania
๐ฑ๐บ Luxembourg
๐ต๐น Madeira (Portugal)
๐ฒ๐น Malta
๐ฒ๐ถ Martinique
๐พ๐น Mayotte
๐ณ๐ฑ Netherlands
๐ณ๐ด Norway
๐ต๐ฑ Poland
๐ต๐น Portugal
๐ท๐ช Rรฉunion
๐ท๐ด Romania
๐ง๐ฑ Saint Barthelemy
๐ซ๐ท Saint Martin
๐ธ๐ฒ San Marino (Italy)
๐ธ๐ฐ Slovakia
๐ธ๐ฎ Slovenia
๐ช๐ธ Spain
๐ธ๐ช Sweden
๐จ๐ญ Switzerland
๐ป๐ฆ Vatican City
๐ฆ๐บ Australia
๐ง๐ท Brazil
๐จ๐ฑ Chile
๐จ๐ด Colombia
๐จ๐ท Costa Rica
๐ธ๐ป El Salvador
๐ฌ๐น Guatemala
๐ญ๐ฐ Hong Kong (China)
๐ฎ๐ฉ Indonesia
๐ฒ๐ด Macao (China)
๐ณ๐ฟ New Zealand
๐ณ๐ฎ Nicaragua
๐ต๐ฆ Panama
๐ต๐ช Peru
๐ต๐ท Puerto Rico
๐ธ๐ฌ Singapore
๐ฑ๐ฐ Sri Lanka
๐บ๐ธ United States of America (USA)
๐บ๐พ Uruguay
๐ป๐ฎ U.S. Virgin Islands
๐ป๐ณ Vietnam
๐ฆ๐ฑ Albania
๐ฆ๐ฉ Andorra
๐ฆ๐ฌ Anguilla
๐ฆ๐ฌ Antigua and Barbuda
๐ฆ๐ท Argentina
๐ฆ๐ฒ Armenia
๐ฆ๐ผ Aruba (Netherlands Antilles)
๐ฆ๐ฟ Azerbaijan
๐ง๐ธ Bahamas
๐ง๐ญ Bahrain
๐ง๐ฉ Bangladesh
๐ง๐ง Barbados
๐ง๐ฒ Bermuda
๐ง๐ด Bonaire (Netherlands Antilles)
๐ง๐ฆ Bosnia and Herzegovina
๐ป๐ฌ British Virgin Islands
๐ง๐ณ Brunei
๐ง๐ซ Burkina Faso
๐ฐ๐ญ Cambodia
๐จ๐ฒ Cameroon
๐จ๐ฆ Canada
๐ฐ๐พ Cayman Islands
๐จ๐ณ China
๐จ๐ผ Curaรงao (Netherlands Antilles)
๐น๐ท Cyprus, North (Turkey)
๐จ๐ฎ Cรดte dโIvoire (Ivory Coast)
๐ฉ๐ฒ Dominica
๐ฉ๐ด Dominican Republic
๐ช๐จ Ecuador
๐ช๐ฌ Egypt
๐ซ๐ด Faroe Islands
๐ฌ๐ฆ Gabon
๐ฌ๐ช Georgia
๐ฌ๐ญ Ghana
๐ฌ๐ฑ Greenland
๐ฌ๐ฉ Grenada
๐ฌ๐ณ Guinea
๐ฌ๐พ Guyana
๐ญ๐น Haiti
๐ญ๐ณ Honduras
๐ฎ๐ณ India
๐ฏ๐ฒ Jamaica
๐ฏ๐ต Japan
๐ฏ๐ด Jordan
๐ฐ๐ฟ Kazakhstan
๐ฐ๐ช Kenya
๐ฝ๐ฐ Kosovo
๐ฐ๐ผ Kuwait
๐ฐ๐ฌ Kyrgyzstan
๐ฑ๐ท Liberia
๐ฒ๐ฌ Madagascar
๐ฒ๐ผ Malawi
๐ฒ๐พ Malaysia
๐ฒ๐ฝ Mexico
๐ฒ๐ฉ Moldova
๐ฒ๐ช Montenegro
๐ฒ๐ธ Montserrat
๐ฒ๐ฆ Morocco
๐ฒ๐ฒ Myanmar
๐ณ๐ช Niger
๐ณ๐ฌ Nigeria
๐ฒ๐ฐ North Macedonia
๐ด๐ฒ Oman
๐ต๐ฐ Pakistan
๐ต๐พ Paraguay
๐ถ๐ฆ Qatar
๐ท๐ผ Rwanda
๐ง๐ถ Saba (Netherlands Antilles)
๐ฐ๐ณ Saint Kitts and Nevis
๐ฑ๐จ Saint Lucia
๐ป๐จ Saint Vincent and the Grenadines
๐ธ๐ฆ Saudi Arabia
๐ธ๐ณ Senegal
๐ท๐ธ Serbia
๐ธ๐จ Seychelles
๐ง๐ถ Sint Eustatius (Netherlands Antilles)
๐ง๐ถ Sint Maarten (Netherlands Antilles)
๐ฟ๐ฆ South Africa
๐ฐ๐ท South Korea
๐ธ๐ท Suriname
๐น๐ผ Taiwan
๐น๐ฏ Tajikistan
๐น๐ญ Thailand
๐น๐น Trinidad and Tobago
๐น๐ณ Tunisia
๐น๐ท Turkey
๐น๐จ Turks and Caicos Islands
๐บ๐ฌ Uganda
๐บ๐ฆ Ukraine
๐ฆ๐ช United Arab Emirates (UAE)
๐บ๐ฟ Uzbekistan
๐ฟ๐ฒ Zambia
73 Roaming Destinations
12GB
๐ฆ๐ฝ ร
land
๐ฆ๐บ Australia
๐ฆ๐น Austria
๐ต๐น Azores
๐ช๐ธ Balearic Islands
๐ง๐ช Belgium
๐ง๐ท Brazil
๐ง๐ฌ Bulgaria
๐ช๐ธ Canary Islands
๐จ๐ฑ Chile
๐จ๐ด Colombia
๐จ๐ท Costa Rica
๐ญ๐ท Croatia
๐จ๐พ Cyprus
๐จ๐ฟ Czech Republic
๐ฉ๐ฐ Denmark
๐ธ๐ป El Salvador
๐ช๐ช Estonia
๐ซ๐ฐ Falkland Islands
๐ซ๐ฎ Finland
๐ซ๐ท France
๐ฉ๐ช Germany
๐ฌ๐ฎ Gibraltar
๐ฌ๐ท Greece
๐ฌ๐ฑ Greenland
๐ฌ๐ต Guadeloupe
๐ฌ๐น Guatemala
๐ฌ๐ฌ Guernsey
๐ฌ๐ซ Guyane (French Guiana)
๐ญ๐ฐ Hong Kong
๐ญ๐บ Hungary
๐ฎ๐ธ Iceland
๐ฎ๐ฉ Indonesia
๐ฎ๐ช Ireland
๐ฎ๐ฒ Isle of Man
๐ฎ๐น Italy
๐ฏ๐ช Jersey
๐ฑ๐ป Latvia
๐ฑ๐ฎ Liechtenstein
๐ฑ๐น Lithuania
๐ฑ๐บ Luxembourg
๐ฒ๐ด Macao
๐ต๐น Madeira
๐ฒ๐น Malta
๐ฒ๐ถ Martinique
๐พ๐น Mayotte
๐ณ๐ฑ Netherlands
๐ณ๐ฟ New Zealand
๐ณ๐ฎ Nicaragua
๐ณ๐ด Norway
๐ต๐ฆ Panama
๐ต๐ช Peru
๐ต๐ฑ Poland
๐ต๐น Portugal
๐ต๐ท Puerto Rico
๐ท๐ช Rรฉunion
๐ท๐ด Romania
๐ง๐ฑ Saint-Barthรฉlemy
๐ซ๐ท Saint-Martin (FR)
๐ธ๐ฒ San Marino
๐ธ๐ฌ Singapore
๐ธ๐ฐ Slovakia
๐ธ๐ฎ Slovenia
๐ช๐ธ Spain
๐ฑ๐ฐ Sri Lanka
๐ธ๐ช Sweden
๐จ๐ญ Switzerland
๐ป๐ฎ U.S. Virgin Islands
๐บ๐พ Uruguay
๐บ๐ธ USA
๐ป๐ฆ Vatican City
๐ป๐ณ Vietnam
Why Unlimited Data SIMs Are Perfect for You
- No worrying about exceeding data limits.
- Ideal for heavy streaming, gaming, and remote work.
- Stay connected anywhere in the UK and abroad.
- Perfect for multiple devices if you share your SIM or hotspot.
FAQs About Three Unlimited Data SIMs
Q: Can I use my phone abroad?
A: Yes, Threeโs Go Roam feature works in 71 destinations.
Q: Do I need a new phone?
A: No, unlimited SIMs work with your existing unlocked device.
Q: Can I upgrade my plan?
A: Yes, you can switch plans or add extras anytime.
Ready to Get Your Unlimited Data SIM?
โ
Visit Three SIM Only Deals
๐ฌ Questions? Check out our guides and reviews for more info.