SIM only networks

Happy with the phone you've got? You can make major savings by switching to a SIM only plan. We compare SIM deals from O2, EE, Three, Vodafone, giffgaff and more.

  • giffgaff SIM only deals

    Giffgaff offers some of the cheapest and most flexible SIM only deals on the market. And with coverage provided by O2’s network and speeds that compare well to rivals,… More »

  • O2 SIM only deals

    If you’re looking for a SIM-only deal, O2 is a great option. It offers lots of SIM plans to choose from, at a reasonable price, and plenty of benefits.… More »

  • three logo

    Three SIM only deals

    With generous data allowances at affordable prices, Three SIM only deals are an attractive option for Netflix bingers, Spotify streamers and avid gamers. While there are cheaper SIM-only deals… More »

  • vodafone logo

    Vodafone SIM only deals

    Vodafone isn't the cheapest SIM only network around. But you'll get attractive perks, as well as good coverage and speeds. Here's everything you need to know. More »

  • voxi logo

    VOXI SIM only deals

    Choose VOXI for flexible plans that won't require a credit check. You'll also get unlimited social media and video streaming without eating into your data allowance, good coverage… More »

  • bt logo

    BT Mobile SIM only deals

    Got BT broadband? Add a BT Mobile SIM to pay your package and there are real savings to be had. Better still, BT's prices, speeds and coverage are among… More »

  • smarty logo

    Smarty SIM only deals

    Smarty is a network focused on value. It doesn’t sell phones. Nor does it tie customers into long contracts. There are three 30-day plans to choose from, all with… More »

  • Compare EE SIM only deals

    A SIM-only deal from EE means you get to keep your existing phone and only pay for the texts, minutes and data you need More »

  • tesco mobile logo

    Tesco Mobile SIM only deals

    Tesco Mobile’s big ‘sell’ is free Clubcard points every time you pay your bill. Add to that good speeds and coverage (courtesy of the O2 network infrastructure), keen prices… More »

  • iD Mobile logo

    Compare iD Mobile SIM-only deals

    Want to keep your current handset and only pay for the minutes, texts and data you’ll actually use? With iD Mobile, you can do just that for as little… More »

SIM only networks

Happy with the phone you've got? You can make major savings by switching to a SIM only plan. We compare SIM deals from O2, EE, Three, Vodafone, giffgaff and more.

Our best SIM only deals this week

  • VOXI sim only
    5G
    • 15GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Unlimited social data
    • £10.00 per month
    1 month contract From VOXI
  • SMARTY sim only
    4G
    • Exclusive
    • 8GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • First 4 months half price
    • £3.50 per month
    1 month contract From SMARTY
  • BT Mobile sim only
    5G
    • 16GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £17.00 per month
    12 month contract From BT Mobile
  • Vodafone sim only
    4G
    • 15GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £8.00 per month
    12 month contract From Vodafone
  • Three sim only
    5G
    • 30GB of 5G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • £10.00 per month
    12 month contract From Three Mobile
  • Plusnet Mobile sim only
    4G
    • 4GB of 4G data
    • Unlimited minutes
    • Unlimited texts
    • download speed limit
    • Extra 2GB for existing Broadband customers
    • £6.00 per month
    1 month contract From Plusnet Mobile

Which networks offer SIM only deals?

Which network is best for SIM only deals?

That largely depends on what you're looking for. If price is your priority, we'd recommend you take a look at 'value networks', such as Tesco Mobile or giffgaff.

Conversely, if you want the fastest speeds EE is probably your best best. While O2 and Vodafone both stand out for offering very noteworthy freebies and customer reward schemes.