We Do SIM Only Deals

Search and compare the best SIM only contracts from the UK's best mobile networks

How long do you need a contract for?

Why Switch to SIM Only?

Keep Your Phone And Number

12 Month Or 30 Day Plans Available

No Credit Check For Some Deals

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SIM Only Guides

Best Mobile Network For SIM Only Data

We compare the numbers to see who the best mobile network is to get the best value data - See how the SIm networks stack up with our full guide. 


25/06/2019

25% Off Smarty's Unlimited SIM Plan

Smarty are well-known for having very low-cost SIM only plans - Their latest Unlimited data SIM offer is their best yet. 


24/06/2019

Who Are 1-Month SIM Deals For?

Choosing the right type of SIM contract is tricky. Here's why you might want a 1-month or 30-day SIM deal. 


14/06/2019

Popular SIM Only Deals

three logo
Three SIM Only
100GB Data
12 Month Contract
£20
a month
100GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 30GB Wifi Hotspot

Free Roaming In 71 Countries

Use popular apps without using your data.

  • Stream your favourite shows and music infinitely without using up your data
  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Use your phone abroad in 71 destinations at no extra cost
  • One month SIM also available
voxi logo
Voxi SIM Only
45GB Data
1 Month SIM
£20
a month
45GB
data
Unlimited
minutes
Unlimited
texts
Offer Ends 31st March
More Info
Check Coverage
At Your Postcode

Endless Social Media

Rolling Contract

No Credit Check Required

  • Endless social media use - Unlimited data on Snapchat, Instagram, WhatsApp, Facebook, Twitter, Pinterest, Viber and Facebook Messenger
  • Refer a friend and you both get a £10 Amazon voucher
  • Use in Europe for no extra cost
  • Powered by Vodafone
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
bt logo
BT SIM Only
15GB Data
12 Month Contract
£23
a month
15GB
data
Unlimited
minutes
Unlimited
texts
£70 BT Reward Card
More Info
Check Coverage
At Your Postcode

£5 off for BT Broadband Customers

Access 5 million Free BT Wi-fi Hotspots

Get free BT Sport on your mobile

  • Claim a free prepaid Mastercard worth £70 - Can be claimed 30 days after purchase
  • Free access to over 5 million UK BT wi-fi hotspots available all over the UK
  • 30 day money back guarantee on everything included in your plan
  • Use the BT Sport App for free on your mobile phone
o2 logo
O2 SIM Only
10GB Data
1 Month SIM
£28
a month
10GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free O2 Wifi Access

Daily Offers with O2 Priority

  • Get online for free, with over 15,000 O2 Wifi hotspots across the UK that are 10 times faster than a normal mobile connection
  • Get exclusive tickets, offers and experiences with O2 Priority
  • Roam at no extra cost in Europe
three logo
Three SIM Only
4GB Data
12 Month Contract
£9
a month
4GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Free 4GB Wifi Hotspot

Free Roaming In 71 Countries

  • Connect other devices to your phone hotspot and use your data allowance to get online
  • Access exclusive offers and treats - Only for Three customers
  • Use your phone abroad in 71 destinations at no extra cost
  • One month SIM also available
id logo
iD Mobile SIM Only
4GB Data
1 Month SIM
£9
a month
4GB
data
1200
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Roll Over Unused Data

Free EU Roaming

  • Roll over unused data each month
  • Simple and flexible SIM only deal - Change or cancel wheneveryou like at no extra cost
  • Powered by Three
ee logo
EE SIM Only
1GB Data
12 Month Contract
£14
a month
1GB
data
Unlimited
minutes
Unlimited
texts
More Info
Check Coverage
At Your Postcode

Speeds Up To 60mbps

Free Roaming In 48 Countries

  • EE will let you know when you run out of anything so you're always in control
  • Use your minutes, texts and up to 15GB from your data allowance in 48 European destinations. No roaming charges.
  • Do more of what you love with 4G in more places than any other UK network and speeds of up to 60mbps.

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What Is A SIM Only Contract?

A SIM only contract is a stand-alone mobile phone contract with a package of texts, call minutes and mobile data.

With a SIM deal you only pay for the package every month, not the phone.

How does a SIM contract work?

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 is just 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.

I'm at the end of my phone contract. What can I do?

Once you reach the end of your mobile phone contract you have a few options:

  • Get a new contract and trade-in/sell your old phone
  • Keep the handset and get a SIM contract. Compare SIM Deals here
  • Buy a new handset outright and get a SIM

Mobile handsets are becoming increasingly expensive. That's why many customers keep the handset they paid good money for and find an affordable SIM deal that suits their needs - whether that's more data, a lower cost every month or for other network perks such as unlimited streaming or social media use.



woman holding a mobile phone

How do I keep my number

If you move to a new network you can keep your old number by taking just a few simple steps.

Firstly, you'll need to ask for a PAC code from your current network - Your PAC code is provided for free and will be made up of three letters and six numbers.

You can request a PAC code by phone or email and there is sometimes a form on your networks website to request it.

Once you have your PAC code you can give it to your new network who will transfer the number to your new contract.

Is there a credit check for SIM only contracts?

There is a credit check for most SIM contracts. If you want a 12 month contract there will certainly be a credit check but for one-month rolling contracts there are some networks who do not credit check - Compare no credit check SIM only deals here

Whilst your credit is being checked it's important to know that for one-month SIMS the check is less stringent.

There are plenty of great, affordable SIM options even if you fail a credit check and many pay as you go deals have offers that make them comparable to a contract (so long as you keep them topped up with credit)

Which SIM network should I choose?

There are lots of options when choosing a network, most customers stay with a well-known networks such as EE, O2, Three or Vodafone but there are plenty of good deals to be had when you compare them to newer, smaller networks such as Smarty, Voxi or giffgaff.

Many small networks in the UK use the infrastructure of the larger networks to provide their service so things like coverage are the same - in which case it's good to compare factors such as data amounts and network perks.

There's loads of options with SIM contracts

Choosing a new SIM deal can get quite complicated when you look at what each network can offer.

Luckily, when when you compare the current offers they can be divided into different categories:

  • No Credit Check SIM Plans
    These are 1 month rolling plans that allow you to cancel whenever you like so you can change plan or network. Offered by Voxi,Smarty&giffgaff
  • Low-Cost SIM Contracts
    There are loads of SIM deals that are extremely affordable for those who don't want to spend more than £10-£15 per month
  • 12 Month SIM Contracts
    These are year-long contracts which are usually have better value for money but will require customers to pass a credit check
  • 1 Month SIM Plans
    These are short deals which give customers the flexibility to change their plan or even network every month. Most 1 Month SIMs require a customer to pass a credit check but not all of them.

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Top UK SIM Only Networks

Most of the UK's top mobile networks offer SIM contracts. Compare deals from: