Three SIM Only Deals

Looking for a SIM only deal? Three is a great network to consider. They offer a range of SIM only tariffs, with great value for money. 

  • Extensive 5G Coverage
  • Three+ customer rewards app

Compare Three SIM Only Deals

Filter Deals

Tariff
Cost Details
Networks
  • ALL
  • 1pMobile
  • Asda Mobile
  • Giffgaff
  • Honest Mobile
  • iD Mobile
  • Lebara
  • Lycamobile
  • Sky Mobile
  • O2
  • Smarty
  • Spusu
  • Talkmobile
  • Three
  • Vodafone
  • Voxi
SIM Type
EXCLUSIVE DEAL
Three SIM Card 5G
Three SIM or eSIM
12 month contract
Unlimited
Minutes
Unlimited
Texts

3 GB Data
You pay
£5.00
per month
Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
EXCLUSIVE DEAL
Three SIM Card 5G
Three SIM or eSIM
24 month contract
Unlimited
Minutes
Unlimited
Texts

3 GB Data
You pay
£5.00
per month
Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
Three SIM Card 5G
Three SIM
24 month contract
Unlimited
Minutes
Unlimited
Texts

1 GB Data
You pay
£6.00
per month

£48.00 Cashback by Redemption
Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
Three SIM Card 5G
Three SIM
24 month contract
Unlimited
Minutes
Unlimited
Texts

1 GB Data
You pay
£6.00
per month

£10.00 Auto Cashback
Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
Three SIM Card 5G
Three SIM
12 month contract
Unlimited
Minutes
Unlimited
Texts

8 GB Data
You pay
£7.00
per month
Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
Choose a retailer
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    8 GB Data
    You pay
    £7.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    24 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    8 GB Data
    You pay
    £7.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    30 GB Data
    You pay
    £8.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    25 GB Data
    You pay
    £8.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    24 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    8 GB Data
    You pay
    £8.00
    per month

    £84.00 Cashback by Redemption
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    24 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    8 GB Data
    You pay
    £8.00
    per month

    £45.00 Auto Cashback
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    24 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    25 GB Data
    You pay
    £8.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    12 GB Data
    You pay
    £9.00
    per month

    £48.00 Cashback by Redemption
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    12 GB Data
    You pay
    £9.00
    per month

    £20.00 Auto Cashback
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    12 GB Data
    You pay
    £9.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM or eSIM
    24 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    1 GB Data
    You pay
    £9.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    30 GB Data
    You pay
    £10.00
    per month

    £48.00 Cashback by Redemption
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Three SIM Card 5G
    Three SIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    30 GB Data
    You pay
    £10.00
    per month

    £25.00 Auto Cashback
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    60 GB Data
    You pay
    £10.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    EXCLUSIVE DEAL
    Three SIM Card 5G
    Three SIM or eSIM
    12 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    40 GB Data
    You pay
    £10.00
    per month
    Monthly price + out of bundle charges will increase each April by the CPI rate (announced in December) + 3.9%
    Can't find what you are looking for?
    Deals last updated: 11 hours 59 minutes ago
    • All stated cost assume that you pay monthly via direct debit, uless otherwise state by them. Networks that require payment via direct debit may charge you a higher montly cost if you do not pay via direct debit.

    Find the best Three SIM only deal for you

    Three SIM-Only Deals: Compare the Best Deals and Save

    Three SIM-only deals: Find out if you can save money on your mobile bill with Three using our SIM-only comparison tool based on minutes, text, data, monthly cost and contract length.

    Three SIM only: Are they good value sim only deals?

    Three SIM-only deals can be a great way to save money on your mobile bill. You get all the benefits of a mobile phone contract, such as data, minutes, and texts, but without buying a new phone. This can be a great option if you are happy with your current phone or if you are on a budget.

    Three offers a wide range of SIM-only deals. You can get deals with as little as 3GB of monthly data and up to unlimited data. Three also offers a variety of contract lengths, so you can choose the one that's best for you.

    Pick between Pay Monthly and Pay As You Go SIM-only, and get the flexibility you need with contract lengths ranging from 1 to 24 months. And with no upfront cost on Pay As You Go, you can start saving money immediately.

    Three SIM-only deals also come with 5G at no extra cost. This means you can enjoy the fastest mobile speeds available, even on a limited budget.

    An Introduction To Three

    Three Mobile is a British telecommunications and internet service provider. It is a subsidiary of CK Hutchison Holdings, operating under the global Three brand. Three is currently the fourth-largest mobile network operator in the United Kingdom, with about 10.3 million subscribers as of May 2023.

    Three was founded in 2002 and launched its mobile network in the UK on 3 March 2003. Three was the first mobile network operator in the UK to offer 3G services. Three also provided some of the most competitive mobile tariffs on the market.

    In 2019, Three launched its 5G network in the UK. It was one of the first mobile network operators in the UK to launch 5G. Three's 5G network offers speeds up to 100 times faster than 4G.

    In June 2023, Three UK was proposed to merge with Vodafone UK. The merger is still subject to regulatory approval, but it will create the UK's largest mobile network operator if it goes ahead.

    What Network Does Three Run On?

    Three UK runs on its own mobile network. It does not piggyback on other networks. Three's network covers over 99% of the UK population, and it is constantly investing in expanding and improving its network. Three's network is known for its good coverage and fast speeds, especially in urban areas.

    Can I Get Unlimited Data With a Three SIM?

    Three offers a variety of flexible SIM-only deals, some of which include unlimited data.

    Three's unlimited data plans are ideal for heavy data users who want to stream, browse, and share without worrying about running out of data. Three's unlimited data plans also come with 5G at no extra cost to enjoy the fastest mobile speeds.

    Choosing an unlimited SIM-only plan from Three means you can stream, browse, and share to your heart's content with unlimited data and never worry about data caps or speed limits again.

    Can I Use My Three SIM Abroad?

    You can use your phone abroad with Three SIM Only and Go Roam. It's easy to activate. Just visit the Go Roam page on the Three website. Daily roaming charges are just £2 per day in Europe and £5 per day in the rest of the world.

    Go Roam lets you unlock your call, text, and data allowance in 71 destinations worldwide. You can check your destination from the Go Roam page and get all the guidance you need to enable your SIM for use overseas.

    Can I Get 5G With Three?

    Three's 5G network is now available to over 99% of the UK population. To get 5G with Three, you will need a 5G-compatible device and a 5G-enabled SIM card. You can check if your device is compatible with Three's 5G network on Three's website.

    To get a 5G-enabled SIM card, you can either upgrade your existing SIM card or purchase a new one. If you are purchasing a new SIM card, you can do so quickly online through SIM Only Finder.

    Once you have a 5G-compatible device and a 5G-enabled SIM card, you can connect to Three's 5G network automatically. You can check if you are connected to 5G by looking for the 5G icon in your device's status bar.

    Can I Get a Three SIM If I Have a Bad Credit Rating?

    You can get a Three SIM card if you have a bad credit rating. However, you may not be eligible for all Three's mobile phone contracts.

    Three offers a variety of mobile phone contracts, including Pay Monthly and Pay As You Go contracts. Pay Monthly contracts require you to pass a credit check. You must have a good credit rating to be approved. However, there is no contract with a Pay As You Go SIM card on Three.

    You can purchase a Pay As You Go SIM card, top up your SIM card with credit, and use it to make calls, send texts, and browse the internet.

    If you prefer to top up your SIM card online, you can do so quickly and easily on Three's website. You can also save your card details in the Three app to top up in seconds. You can purchase a top-up voucher from many retailers if you don't have a card. You can also top up by phone by dialling 444 from your phone.

    You can get a free Pay As You Go SIM from Three by completing an online SIM form. Then, once your free SIM has been delivered, you can add a Data Pack whenever you are ready.

    Which Size SIM Cards Can I Get With Three?

    Three offers all three sizes of SIM cards: standard, micro, and nano.

    If you need help determining which size SIM card your device requires, you can check your device's manual or contact the manufacturer of your device. If you have an older model, it may need a standard SIM card. However, most modern devices require a micro or nano SIM card.

    You can purchase a SIM card adapter if you switch phones and need to convert your SIM card to a different size. SIM card adapters are inexpensive and easy to use.

    Can I Switch From My Current Provider To a Three SIM-Only Deal?

    You can switch from your current provider to a Three SIM-only deal. Switching is a straightforward process, and Three will help you every step of the way.

    To switch to Three, you will need to:

    • Get a PAC code from your current provider.
    • Choose a Three SIM-only deal. Three offers various SIM-only deals to suit all budgets and needs. You can compare deals online through the SIM Only Finder comparison tool.
    • Sign up for a Three SIM-only contract.
    • Give Three your PAC code. Three will use your PAC code to switch you from your current provider.

    Switching to Three usually takes around 48 hours. Once the switch is complete, you can use your new Three SIM-only deal.

    You can read more about switching networks by reading our handy guide.

    Does Three Have Good Coverage?

    Three's network covers over 99% of the UK population and is known for its good coverage in urban and rural areas. Three also offers 5G coverage in over 99% of the UK population, and their network is the fastest in the UK, with speeds that can reach up to 1Gbps.

    Is The Three Network Fast?

    Three's 4G speeds are significantly faster than the average speeds offered by other mobile networks in the UK. Their 5G network is also the fastest in the UK, according to Ookla, who has named them the UK's Fastest 5G Network. With 5G speeds reaching up to 1Gbps, you can download movies, stream videos, and play games almost instantly on the Three network.

    How Reliable Is Three?

    Three's reliability has improved significantly in recent years. Its improved reliability is due to several factors, including heavy investment in its network infrastructure. Three invested £2 billion to transform its network, giving customers faster 4G and 5G speeds and a more reliable experience.

    The company is investing heavily in its 5G network, which is expected to be even more reliable than 4G. Three is also working with other companies to develop new technologies that will improve the reliability of mobile networks.

    Does Three Have Good Customer Service?

    Three has good customer service. The company has strived to improve its customer service in recent years, focusing on improving the customer experience. They have a commitment to resolving customer issues as quickly and efficiently as possible and offer a variety of ways to contact customer service, including:

    • Online chat
    • Phone support
    • Email support
    • Social media support

    Three also have developed some self-service tools that customers can use to resolve issues without contacting customer service. These tools include:

    • The Three app
    • The My Three website
    • The Three Community Forum

    Getting The Best Three SIM-Only Deal For You

    Find the cheapest Three SIM-only deals with SIM Only Finder. Our simple comparison tool makes finding the best Three SIM-only deals for your needs easy. Tell us your data allowance, network coverage, and budget, and we will show you the best options.

    SIM only Networks

    1pMobile SIM Only Deals
    Asda Mobile SIM Only Deals
    Giffgaff SIM Only Deals
    Honest Mobile SIM Only Deals
    iD Mobile SIM Only Deals
    Lebara SIM Only Deals
    Lycamobile SIM Only Deals
    O2 SIM Only Deals
    Sky Mobile SIM Only Deals
    Smarty SIM Only Deals
    Spusu SIM Only Deals
    Talkmobile SIM Only Deals
    Three SIM Only Deals
    Vodafone SIM Only Deals
    Voxi SIM Only Deals

    Our Retailer Partners

    1pMobile
    Asda Mobile
    e2save
    Fonehouse
    Giffgaff
    Honest Mobile
    ID Mobile
    Lebara
    Lycamobile
    Reward Mobile
    Sky Mobile
    mobiles.co.uk
    O2
    Smarty
    Spusu
    Talkmobile
    Three
    Vodafone
    VOXI