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    Three
    SIM Card

    Three Network
    • 100GB Data
    • Unlimited Minutes
    • Unlimited Texts
    • 12 months

    Three
    SIM Card

  • Faster Speeds with 5G
  • Claim Exclusive Offers and Discounts
  • Use Your Phone on the London Underground
  • Tether your devices to surf on the go
  • 99% 4G UK Coverage

    • Get more flexibility and savings with a SIM Only deal—no long contracts, just great value and control over your plan! Our SIM cards come in 3 sizes so there is no worry about it not fitting your phone.

    Three Advanced 100GB AYCE Min Sim Only (12mths)

    Three Network
    100GB

    5G Data

    Unlimited Mins

    Unlimited Texts

    12 months

    £11.00†

    a month

    £15.00 before cashback
    £0.00

    upfront

    In Stock

    † Total monthly cost increasing to: £16.50 from April 2026 bill | £18.00 from April 2027 bill. Monthly Charge increase by £1.50 from April each year.

    Tariff Benefits

    Faster Speeds with 5G

    Faster Speeds with 5G

    Share your snaps in a flash, and wave goodbye to buffering. Ookla has named Three the UK’s Fastest 5G Network 3 years in a row, so you can do the things you love, faster. Verify at speedtest.net/awards/fastest-5g

    Claim Exclusive Offers and Discounts

    Claim Exclusive Offers and Discounts

    Get exclusive discounts on the biggest brands like Caffè Nero, Cineworld, Nandos and more when you download the Three+ customer loyalty app. Plus, music lovers can get pre-sale tickets to the UK's biggest festivals.

    Use Your Phone on the London Underground

    Use Your Phone on the London Underground

    With Free WiFi at over 250 stations on the London Underground, you can continue using your phone in ticket halls, walkways and platforms, for planning your route, checking socials, sending emails, or keeping on top of the latest scores and news.

    99% 4G UK Coverage

    99% 4G UK Coverage

    Three's combined 3G and 4G network covers 99% of the UK outdoor population. And they're full steam ahead with their 5G rollout (5G-compatible handset required).

    These charges are applicable only when you exceed what is included in your tariff.

    Calls to UK Mobiles p/m 65p
    Calls to Landlines p/m (numbers starting with 01, 02 or 03 excluding Jersey, Guernsey, Isle of man) 65p
    Calls to Jersey, Guernsey & Isle of man p/m 46p
    Data Bundles from £2.50
    Text Messages p/msg N/A
    MMS Messages p/msg 65p
    Calls to Voicemail p/m 65p
    0800 and 0808 Calls p/m £0.00
    Customer Service Calls p/m 35p
    0500 Number Calls p/m £0.00
    084, 087, 09 and 118 Access Charge p/m 65p
    070 non-mobile Maximum Charge p/m £1.22 per call plus 85.5p per minute
    Calls to certain MVNO's p/m 65p
    Service Numbers

    Calls to service numbers (starting 084, 087, 09 and 118) aren’t included in your plan allowance. There will be two charges on your bill, made up of an Access Charge that's charged by the network as pence per minute, and a Service Charge that's charged by the organisation you called. You will be charged the Access Charge for a minimum of 1 minute and then per second for the rest of the call.

    Roaming Charges

    Additional charges will apply to calls made while roaming outside of the EU/EEA. Customers on Three will also be charged £2 per day for roaming inside the EU. Customers on Vodafone will also be charged £2.25 per day for roaming inside the EU excluding Iceland and Norway. Customers on a Vodafone Unlimited Max VGR plan will receive free roaming in 83 destinations (Zones A, B and C), you can check all zones and destinations at https://www.vodafone.co.uk/mobile/global-roaming

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    † Total monthly cost increasing to: £10.25 from April 2026 bill | £11.50 from April 2027 bill. Monthly Charge increase by £1.25 from April each year.
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    Three

    SIM Card

    • 5G
    • 24 MTH
    Three SIM Card top deal
    • 8GB data
    • £8.00† a month
    • £0.00 Upfront
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    † Total monthly cost increasing to: £9.25 from April 2026 bill | £10.50 from April 2027 bill. Monthly Charge increase by £1.25 from April each year.
    † O2: Your monthly price will increase every April by £1.80. Out of bundle charges will increase each year by 5% from 1st April. Vodafone: Monthly price will increase each April by £1.80 inc VAT (£1.00 inc VAT for Basics Plans), out of bundle charges will increase by the Consumer Price Index rate of inflation published in January of that year plus 3.9%. Three: The monthly price will increase each April. Please see the table here for more information.

    † Every year your chosen network will increase your contract changes as follows

    O2: Your monthly price will increase every April by £1.80. Out of bundle charges will increase each year by 5% from 1st April.

    Vodafone: During your minimum period, each year, on the 1st of April, your monthly plan charge will increase by £1.80 (£1.00 for Pay monthly Basics plans). Out of bundle charges will increase each April by the Consumer Price Index rate published in January of that year + 3.9%.

    Three: Each April, your monthly subscription charge will increase depending on how much data you have bought, please see the table below:

    Data allowance range

    Cost increase

    Lower or equal to 4GB

    £1.00

    Greater than 4GB, less than 100GB

    £1.25

    Greater or equal to 100GB

    £1.50

    Please see network Terms & Conditions for more details - you'll find these here.

    All SIM Only
    † O2: Your monthly price will increase every April by £1.80. Out of bundle charges will increase each year by 5% from 1st April. Vodafone: Monthly price will increase each April by £1.80 inc VAT (£1.00 inc VAT for Basics Plans), out of bundle charges will increase by the Consumer Price Index rate of inflation published in January of that year plus 3.9%. Three: The monthly price will increase each April. Please see the table here for more information.

    † Every year your chosen network will increase your contract changes as follows

    O2: Your monthly price will increase every April by £1.80. Out of bundle charges will increase each year by 5% from 1st April.

    Vodafone: During your minimum period, each year, on the 1st of April, your monthly plan charge will increase by £1.80 (£1.00 for Pay monthly Basics plans). Out of bundle charges will increase each April by the Consumer Price Index rate published in January of that year + 3.9%.

    Three: Each April, your monthly subscription charge will increase depending on how much data you have bought, please see the table below:

    Data allowance range

    Cost increase

    Lower or equal to 4GB

    £1.00

    Greater than 4GB, less than 100GB

    £1.25

    Greater or equal to 100GB

    £1.50

    Please see network Terms & Conditions for more details - you'll find these here.

    General

    All pay monthly offers subject to security and credit check. Charges will apply for paper billing. Charges may also apply for non-Direct Debit payment. Promo codes cannot be used in conjunction with any other offer. Full Legals.

    Products

    All products bought on our website are provided by ourselves, not the network, and are subject to our full T&Cs.

    Cashback

    Unless otherwise stated, cashback incentives are provided by ourselves and not the Network provider or third-party. Full details are in our T&Cs.

    Data Speeds

    Advertised 4G and 5G speeds are available in selected areas. Exact speed depends on location and number of users. Check coverage using the link in the shopping basket before buying.

    Roaming (Three)

    You can use your minutes, texts and data in 71 worldwide countries, £2 per day charge applies to EU, £5 per day charge applies to Around the World. Before travelling please make sure the roaming bar is lifted and visit www.three.co.uk/roaming or the My3 app for out of bundle charges relating to non-inclusive countries. A ‘Fair Usage Policy’ for using your data abroad applies, capping customers on a 12GB or higher plan for Go Roam in Europe and Go Roam Around the World.