30 day SIM only deals

Use our SIM only search to find the cheapest 30 day SIM only deals on the market

  • Compare 30 day SIM only deals, updated hourly.
  • Switch to a new network and keep your existing number, simply and quickly!
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Compare 30 day SIM only deals

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  • 1pMobile
  • Asda Mobile
  • Boshhh Mobile
  • Giffgaff
  • Grade Mobile
  • Honest Mobile
  • iD Mobile
  • Lebara
  • Lycamobile
  • Mozillion
  • O2
  • Sky Mobile
  • Smarty
  • Spusu
  • Talk Home
  • Talkmobile
  • Tesco Mobile
  • Three
  • Vodafone
  • Voxi
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Spusu SIM Card 5G
Spusu SIM or eSIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

1 GB Data
You pay
£2.90
per month
Powered By: EE Free EU Roaming Price freeze until 2026
EXCLUSIVE DEAL
Talkmobile SIM Card 5G
Talkmobile SIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

5 GB Data
You pay
£4.95
per month
Powered By: Vodafone Free EU Roaming
Lycamobile SIM Card 5G
Lycamobile SIM or eSIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

10 GB Data
You pay
£5.00
per month

1 Month at £2.50
Powered By: EE 100 International minutes
Lycamobile SIM Card 5G
Lycamobile SIM or eSIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

5 GB Data
You pay
£5.00
per month
Powered By: EE
Lebara SIM Card 5G
Lebara SIM
1 month contract
1000
Minutes
1000
Texts

5 GB Data
You pay
£5.00
per month

3 Months at £2.50
Powered By: Vodafone 50% off for 3 months with code LEBARA3M Free EU roaming 100 International minutes
Talk Home SIM Card 5G
Talk Home SIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

4 GB Data
You pay
£5.00
per month

3 Months at £0.01
Powered By: EE
Asda Mobile SIM Card
Asda Mobile SIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

3 GB Data
You pay
£5.00
per month
Powered By: Vodafone Free EU roaming
Mozillion SIM Card 5G
Mozillion SIM or eSIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

1 GB Data
You pay
£5.00
per month
Powered By: EE EU roaming included
EXCLUSIVE DEAL
Talkmobile SIM Card 5G
Talkmobile SIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

20 GB Data
You pay
£5.95
per month
Powered By: Vodafone Free EU Roaming
EXCLUSIVE DEAL
Talkmobile SIM Card 5G
Talkmobile SIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

8 GB Data
You pay
£5.95
per month
Powered By: Vodafone Free EU Roaming
iD Mobile SIM Card 5G
iD Mobile SIM or eSIM
1 month contract
Unlimited
Minutes
Unlimited
Texts

10 GB Data
You pay
£6.00
per month
Monthly price will increase by £1.50 from April 2026
Powered By: Three Free EU roaming
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    Smarty SIM Card 5G
    Smarty SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    5 GB Data
    You pay
    £6.00
    per month
    Powered By: Three Free EU roaming
    iD Mobile SIM Card 5G
    iD Mobile SIM or eSIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    5 GB Data
    You pay
    £6.00
    per month
    Monthly price will increase by £1.50 from April 2026
    Powered By: Three Free EU roaming
    Mozillion SIM Card 5G
    Mozillion SIM or eSIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    3 GB Data
    You pay
    £6.00
    per month
    Powered By: EE EU roaming included
    1pMobile SIM Card
    1pMobile SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    2 GB Data
    You pay
    £6.00
    per month
    Powered By: EE
    Giffgaff SIM Card 5G
    Giffgaff SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    2 GB Data
    You pay
    £6.00
    per month
    Powered By: O2 Free EU Roaming
    Giffgaff SIM Card 5G
    Giffgaff SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    1 GB Data
    You pay
    £6.00
    per month
    Powered By: O2 Free EU Roaming
    Spusu SIM Card 5G
    Spusu SIM or eSIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    20 GB Data
    You pay
    £6.90
    per month
    Powered By: EE Free EU Roaming Price freeze until 2026
    EXCLUSIVE DEAL
    Talkmobile SIM Card 5G
    Talkmobile SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    40 GB Data
    You pay
    £6.95
    per month
    Powered By: Vodafone Free EU Roaming
    EXCLUSIVE DEAL
    Talkmobile SIM Card 5G
    Talkmobile SIM
    1 month contract
    Unlimited
    Minutes
    Unlimited
    Texts

    15 GB Data
    You pay
    £6.95
    per month
    Powered By: Vodafone Free EU Roaming
    Can't find what you are looking for?
    Deals last updated: 8 hours 57 minutes ago

    Find the best 30 day SIM only deal for you

    SIM Only Finder compares 30 day sim only deals and tariffs from all the UK’s leading mobile networks and MVNOs. These include 3 Mobile, O2, EE, Vodafone, ID Mobile, Virgin Mobile, Smarty, VOXI, Sky Mobile, Lebara Mobile and Tesco Mobile.

    What is a 30 day SIM only deal?

    A 30 day SIM only or a one month SIM only, is pay monthly SIM Only deal. Unlike 12 month sim only deals or 24 month sim only deals, a 30 day sim only deal usually provides much better value for money.

    As the name suggests not only do you get better value for money, but you also are not committed to any long term contracts. Most 30 day sim only deals allow you to cancel by giving 30 days notice. Some allow you to cancel just by not paying for the next month, these include the likes or GiffGaff or Smarty Mobile.

    Otherwise 30 day or 1 month sim only deals are the same as every other SIM only deal, whereby you pay a fee for a set allowance of data, calls and texts. Longer term SIM Only deals may come with bigger benefits or incentives, but there are also some very good 30 day sim only deals too.

    How do 30 day SIM Only deals work?

    30 day SIM Only deals work identically to their longer 12 month and 24 month counterparts. 

    The key difference is in the name, and that is that you are only legally committee to stay with them for 30 days, and can leave by giving 30 days notice. 

    30 day SIM Only deals offer much better value for money that pay as you go SIM cards and you do not need to worry about remembering to top up or converting your top up into a bundle. At the end of each month your 30 day or 1 month SIM card automatically renews or rolls over for another month unless you have explicity asked your network to cancel.

    What happens after 30 days?

    After your intial 30 days your sim only deal will automatically renew. This will continue to happen until you ask your network to cancel, this can be done usually by giving them a call or doing so via the networks mobile app. Most 30 day SIM only deals will require 30 days notice in order to cancel your monthly subscription.

    Don't forget you can also port your number onto your SIM only deal and then off to another network once done. There is no limit on how many times you can do this. Read our handy guide here for more info.

    Do I need to pass a credit check for a 30 day SIM only?

    This largely depends on the network. Smaller networks such as Smarty, Lebara, VOXI and GiffGaff don't apply credit checks, some other networks may still check your credit score.

    Although there are credit checks, this are much lighter, less stringent and easier to pass than if you were applying for a pay monthly, 12 month SIM only deal or 24 month SIM only deal due to less risk for the networks.

    Pros and cons of 30-day SIM only deals

    Pros

    • Much more flexbility than a longer term deal, meaning you are free to leave and change your deal whenever you want.
    • There are a lot of great value plans to choose from
    • Credit checks are generally easier to pass
    • Good for when you don't want to be tied into a longer contract
    • Can use your old handset but with a better value deal

    Cons

    • Included allowances will not be as good as on longer term deals
    • Signing up for longer can give you better value for money

    SIM only Networks

    1pMobile SIM Only Deals
    Asda Mobile SIM Only Deals
    Boshhh Mobile SIM Only Deals
    Giffgaff SIM Only Deals
    Grade Mobile SIM Only Deals
    Honest Mobile SIM Only Deals
    iD Mobile SIM Only Deals
    Lebara SIM Only Deals
    Lycamobile SIM Only Deals
    Mozillion SIM Only Deals
    O2 SIM Only Deals
    Sky Mobile SIM Only Deals
    Smarty SIM Only Deals
    Spusu SIM Only Deals
    Talk Home SIM Only Deals
    Talkmobile SIM Only Deals
    Tesco Mobile SIM Only Deals
    Three SIM Only Deals
    Vodafone SIM Only Deals
    Voxi SIM Only Deals

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    With Ofcom’s seal of approval, we’re committed to helping you make informed decisions for your connectivity needs.

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    1pMobile
    Asda Mobile
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    Carphone Warehouse
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    Fonehouse
    Giffgaff
    Grade Mobile
    Talk Home
    Honest Mobile
    ID Mobile
    Lebara
    Lycamobile
    Reward Mobile
    Sky Mobile
    Tesco Mobile
    mobiles.co.uk
    Mozillion
    O2
    Smarty
    Spusu
    Talkmobile
    Three
    Vodafone
    VOXI