Three SIM Only Deals

Compare Three SIM only contracts. Join one of the UK's best networks for big SIM data allowances and the home of the UK's only truly UNLIMITED data SIM.

  Filter deals
Contract Length
vodafone logo
5GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£18 / month*
Red SIM Only 5GB
More Info
Check Coverage
At Your Postcode
 *Price increases to: £31.80 on 1 April 2026 £33.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • Maximum speed of 100Mbps
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
50GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£21 / month*
Red SIM Only 50GB
More Info
Check Coverage
At Your Postcode
 *Price increases to: £37.80 on 1 April 2026 £39.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • 5G Ultra at no extra cost
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
150GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£25 / month*
Red SIM Only 150GB
More Info
Check Coverage
At Your Postcode
 *Price increases to: £47.80 on 1 April 2026 £49.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • 5G Ultra at no extra cost
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
200GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£28 / month*
Red SIM Only 200GB
More Info
Check Coverage
At Your Postcode
 *Price increases to: £44.80 on 1 April 2026 £46.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service


  • Maximum speed of 100Mbps
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
30GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£28 / month*
Red SIM Only 30GB Xtra Euro Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £45.80 on 1 April 2026 £47.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • 5G Ultra at no extra cost
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
30GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£29 / month*
Red SIM Only 30GB + Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £52.80 on 1 April 2026 £54.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • Amazon Prime Video or YouTube Premium (24 months)
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£30 / month*
Unlimited SIM Only Plus
More Info
Check Coverage
At Your Postcode
 *Price increases to: £55.80 on 1 April 2026 £57.60 on 1 April 2027.

Unlimited SIM Only data plans come with a choice between 4G and faster 5G network. Roam for free in 51 destinations worldwide & or 81 destinations with Unlimited Max plan.


  • eSIM Compatible
  • Flexible Upgrade
  • Wi-Fi Calling
  • Maximum speed of 100Mbps
  • VeryMe Rewards app
vodafone logo
30GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£31 / month*
Red SIM Only 30GB Xtra Global Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £34.80 on 1 April 2026 £36.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service.


  • 5G Ultra at no extra cost
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£33 / month*
Unlimited SIM Only Plus
More Info
Check Coverage
At Your Postcode
 *Price increases to: £44.80 on 1 April 2026 £46.60 on 1 April 2027.

Unlimited SIM Only data plans come with a choice between 4G and faster 5G network. Roam for free in 51 destinations worldwide & or 81 destinations with Unlimited Max plan.


  • eSIM Compatible
  • Maximum speed of 100Mbps
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£36 / month*
Unlimited Max SIM Only
More Info
Check Coverage
At Your Postcode
 *Price increases to: £41.80 on 1 April 2026 £43.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • Wi-Fi Calling
  • 5G-ready
  • VeryMe Rewards app
vodafone logo
200GB SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£36 / month*
Red SIM Only 200GB + Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £42.80 on 1 April 2026 £44.60 on 1 April 2027.

Vodafone's Red 4G/5G Sim Only plans come with unlimited calls and texts across the board, along with exclusive entertainment and sports packages. Red plans come with generous data allowances, and those on phone plans also benefit from Vodafone's 5 Star Care service


  • Maximum speed of 100Mbps
  • eSIM Compatible
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£40 / month*
Unlimited SIM Only Plus Xtra Euro Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £29.80 on 1 April 2026 £31.60 on 1 April 2027.

Unlimited SIM Only data plans come with a choice between 4G and faster 5G network. Roam for free in 51 destinations worldwide & or 81 destinations with Unlimited Max plan.


  • eSIM Compatible
  • Maximum speed of 100Mbps
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£41 / month*
Unlimited SIM Only Plus + Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £37.80 on 1 April 2026 £39.60 on 1 April 2027.

Unlimited SIM Only data plans come with a choice between 4G and faster 5G network. Roam for free in 51 destinations worldwide & or 81 destinations with Unlimited Max plan.


  • eSIM Compatible
  • Maximum speed of 100Mbps
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£43 / month*
Unlimited Max SIM Only Xtra Euro Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £26.80 on 1 April 2026 £28.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • 5G Ultra at no extra cost
  • Wi-Fi Calling
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£43 / month*
Unlimited SIM Only Plus Xtra Global Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £22.80 on 1 April 2026 £24.60 on 1 April 2027.

Unlimited SIM Only data plans come with a choice between 4G and faster 5G network. Roam for free in 51 destinations worldwide & or 81 destinations with Unlimited Max plan.


  • eSIM Compatible
  • Maximum speed of 100Mbps
  • Wi-Fi Calling
  • Flexible Upgrade
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£44 / month*
Unlimited Max SIM Only with Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £32.80 on 1 April 2026 £34.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • Amazon Prime Video or YouTube Premium (24 months)
  • Wi-Fi Calling
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£46 / month*
Unlimited Max SIM Only Xtra Global Roam
More Info
Check Coverage
At Your Postcode
 *Price increases to: £29.80 on 1 April 2026 £31.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • 5G Ultra at no extra cost
  • Wi-Fi Calling
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£51 / month*
Unlimited Max SIM Only Xtra Euro Roam + Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £19.80 on 1 April 2026 £21.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • Amazon Prime Video or YouTube Premium (24 months)
  • Wi-Fi Calling
  • VeryMe Rewards app
vodafone logo
Unlimited SIM Deal
24 Month Contract
Unlimited Minutes
Unlimited Texts
£54 / month*
Unlimited Max SIM Only Xtra Global Roam + Entertainment
More Info
Check Coverage
At Your Postcode
 *Price increases to: £30.80 on 1 April 2026 £32.60 on 1 April 2027.

Unlimited Max SIM Only data tariffs come with the fastest speeds available on Vodafone's 5G network, as well as free roaming in 81 destinations.


  • 6-month Half Price Discount
  • eSIM Compatible
  • Amazon Prime Video or YouTube Premium (24 months)
  • Wi-Fi Calling
  • VeryMe Rewards app

Can't find the right deal?

Try adding a filter to find your perfect deal
View All SIM Deals
Return to the top

Why go with Three SIM only?

A Three SIM Only deal is packed with great network features no matter whether you have 1GB of data or Unlimited data.

Every SIM deal comes with a free personal hotspot so you can use your data allowance to power another device online and you can use your mobile for free in 71 countries all around the world.

If you're a data junkie you'll be pleased to know that on Three's 12GB, 30GB, 100GB and Unlimited SIM deals you can use Go Binge which allows you to use Snapchat, Netflix, Apple Mucis and more without using up your data allowance.

Benefits and Features

When you usually take out a mobile phone contract your payment covers two things: the usage of texts, minutes and data and the handset you're using.

Mobile phone networks are essentially "leasing" the handset to you for a monthly fee. At the end of your contract (usually 12 to 24 months) they hope that you've paid the full cost of the phone. The SIM is just the microchip the phone uses to access the network.

A SIM only contract i sjust a SIM card, this allows you to choose the phone so you're only paying for the part of the contract that covers the network usage and not the more expensive handset.

  • Flexible Contract Lengths - Choose from a 1-month, 12-month or 24-month paymonthyl SIM contract
  • Wifi Calling - Use your phone when you have no signal, you can call and text like normal when connected to wifi - Including on the London underground
  • Free Wi-fi on the London Underground - Connect at over 250 stations and you're free to browse as much as you like
  • Travel Perks From EasyJet - Priority bag drop, Hassle-free security, Priority boarding, Fast bag delivery. (Pay Monthly Customers Only)

Three Mobile Awards

Best Network for Data 2017 - Uswitch mobile awards

Best Pay Monthly Network 2017 - Uswitch mobile awards

Best Network for Roaming 2017 - Uswitch mobile awards