Best SIM Only deals and contracts

SIM only deals are notably cheaper than standard smartphone contracts as they come without a handset. They also offer the flexibility to change devices whenever you please. Here at iD Mobile, you will find the best SIM Only deals on contracts to suit every circumstance.

Discover features of all our SIM Only plans

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We're rolling out 5G on selected phones.

Flexible plans to suit you

Choose from 1-month, 12-month or 24-month SIM Only deals.

Unlimited minutes & texts

Talk and text as much as you like!

Data Rollover

Roll your unused data over to the next month.

Roaming

Roam like you’re at home in 50 destinations worldwide.

Bill Capping

Cap your monthly cost to an amount that works for you.

Plan length

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Get FREE 5G on our SIM only deals

Available on selected 5G phones, subject to coverage

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£6.00 per month
3GB data
1 month
Unlimited mins
Unlimited texts
£6.00 per month
4GB data
12 months
Unlimited mins
Unlimited texts
£6.00 per month
4GB data
24 months
Unlimited mins
Unlimited texts
£7.00 per month
5GB data
1 month
Unlimited mins
Unlimited texts
£7.00 per month
6GB data
12 months
Unlimited mins
Unlimited texts
£8.00 per month
10GB data
1 month
Unlimited mins
Unlimited texts
£8.00 per month
12GB data
12 months
Unlimited mins
Unlimited texts
£8.00 per month
12GB data
24 months
Unlimited mins
Unlimited texts
£10.00 per month
12GB data
1 month
Unlimited mins
Unlimited texts
£10.00 per month
20GB data
12 months
Unlimited mins
Unlimited texts
£10.00 per month
30GB data
24 months
Unlimited mins
Unlimited texts
£12.00 per month
18GB data
1 month
Unlimited mins
Unlimited texts
£12.00 per month
30GB data
12 months
Unlimited mins
Unlimited texts
£12.00 per month
50GB data
24 months
Unlimited mins
Unlimited texts
£14.00 per month
100GB data
24 months
Unlimited mins
Unlimited texts
£15.00 per month
40GB data
1 month
Unlimited mins
Unlimited texts
£15.00 per month
50GB data
12 months
Unlimited mins
Unlimited texts
£16.00 per month
100GB data
12 months
Unlimited mins
Unlimited texts
£16.00 per month
Unlimited data
24 months
Unlimited mins
Unlimited texts
£17.00 per month
50GB data
1 month
Unlimited mins
Unlimited texts
£18.00 per month
Unlimited data
12 months
Unlimited mins
Unlimited texts
£20.00 per month
Unlimited data
1 month
Unlimited mins
Unlimited texts

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SIM Only Deals Explained

We're here to help you find the best SIM Only deal. There are many benefits to taking out a SIM Only contract as they are considerably cheaper than a pay monthly phone contract. With iD Mobile you can choose from a wide range of flexible 30-day, 12-month or 24-month SIM Only plans for your mobile phone and all contracts feature a monthly set amount of data, unlimited minutes and texts. If you require more minutes or need more data, you can change your plan on the iD Mobile App or My Account online. What’s more, you will still receive the same benefits that our Pay Monthly Contract and Pay As You Go customers enjoy with Inclusive Roaming, Data Rollover and Bill Capping.

A SIM Only deal is perfect if you want to keep the phone you already have or when you get a new phone that is SIM-free. Just make sure the current phone you are using is not locked to a different network or your SIM won’t work. When you receive your new SIM card, just simply insert the card in your phone and it is ready to use right away. You can find more information on how to change your SIM card in our FAQs below for everything you need to know about our SIM Only plans.

If you sign up to our SIM Only plans, you can still keep your number from your old network. All you need to do is request a PAC (Porting Authorisation Code) number from your old network and give it to us along with your current phone number. We will move your number to your new SIM Only plan the next working day. Click for more information on switching to iD Mobile with our SIM Only contracts.

SIM Card front

FAQ's

A SIM or SIM Card is a small piece of plastic that slots into your mobile phone. It identifies who you are to the Mobile Network it connects to, and enables you to connect to the internet, make phone calls and send texts.

A SIM Only deal is precisely that. You purchase a monthly allowance of data for use on the internet, a set number of minutes for phone calls, and an amount of texts to send. The network will send you a SIM Card if you're not yet with them, so you can join their network and use the allowances you've purchased.

iD Mobile SIM Only deals come as 30-day, 12-month and 24-month plans, and all contract lengths come with unlimited texts and unlimited minutes. With 30-day SIM Only contracts, you have the flexibility to change or cancel your plan at any time, after your first month with us.

You'll spend much less each month than a standard ‘phone contract' because you won't also be paying for the handset itself. However, you'll need to have a phone to put the SIM in or purchase one that's ‘SIM-free' to put the SIM into. Be careful that your mobile phone isn't locked to a different network from your SIM or you won't be able to use it. Ofcom have announced that the practice of locking handsets from UK mobile networks is to be banned from December 2021 so soon you won't have to worry about that and a number of networks already only sell unlocked handsets.

You can find a wide range of our best SIM Only deals here with unlimited minutes and texts available.

Speedy 5G and 4G is offered as standard with every iD Mobile SIM Only deal too, and our multi-size SIM cards fit any smartphone to make life that little bit easier.

You'll be able to enjoy the same exclusive benefits all our other iD Mobile customers receive too. It doesn't matter if you choose a SIM Only deal, have a regular Pay Monthly contract or Pay As You Go, every member of the iD family can look forward to free Inclusive Roaming, Data Rollover and Bill Capping.

With our Data Rollover feature, you'll get a second chance to make the most of your unused data. Whatever's leftover from your monthly contract will automatically be carried over to the next month of your SIM Only deal. This means you'll have all the data you need and never let a MB go to waste. Bill Capping, meanwhile, ensures you'll never be surprised with a hefty bill. You have the ability to put a limit, from £0, on your out-of-plan spend too - we'll never let you use more than you've agreed.

Finally, Inclusive Roaming, lets all iD customers use their monthly allowances while abroad. Make calls, send texts, Google directions, update Instagram or video call loved ones back home without worrying about the extra cost.

If you already own a phone you're happy with; a SIM Only plan is a wise choice. Not only can you carry on using the device you love, you can look forward to paying less every single month too. As you'll no longer need to factor in the cost of a new handset, your monthly plan will simply include a bundle of minutes, texts and data that suit you.

A SIM Only contract is popular thanks to its flexibility too. At iD Mobile, you will find our best SIM Only deals operate as 30-day, 12-month and 24-month contracts.

A 30-day SIM Only deal means you can change or end your plan easily after the first 30-days by giving us notice. This contract length is ideal if you find your data usage fluctuates month to month, or if you're not ready to sign up to a new 12-month contract or 24-month contract straight away.

On top of all of this, our plans include a number of network perks that our Pay Monthly Contract and Pay As You Go customers enjoy like free Inclusive Roaming and Data Rollover.

If you run out of an allowance, you can still keep using it (for example, if you run out of minutes you can make calls), but you'll be charged at out-of-plan rates.

To prevent you from racking up these out-of-plan charges, it's easy to purchase an Add-on of minutes or data (depending on which allowance you've run out of).

Please note: Add-ons can't be backdated to cover your past usage. They come into effect when they're purchased, and never before.

Yes. It’s simple if you want to keep your number when you sign up to an iD Mobile SIM Only plan on an existing mobile or if you get a new phone. If you're already with us, you can switch your plan from your account and we'll simply update your monthly allowances and your bill from your next billing cycle. You can move up or down to a lower price SIM Only plan as long as you pass the usual eligibility criteria.

If you're not already with iD Mobile, under new legislation from Ofcom that came into effect on 1st July last year, you don't have to call your old provider to switch. Instead, just text ‘PAC' using your old SIM to 65075. PAC stands for Porting Authorisation Code, and sending us your PAC code will enable us to port (or bring) your old mobile number across to us.

Your old network will send you your PAC code and any information around outstanding penalties, charges or credit due on your account. In addition, if you've completed your minimum contract length with your old provider, they can't charge you for the remainder of your notice period following your switch. So, you won't have to pay two bills at once. Just be careful that you're not still in contract or they could levy a fee against you for leaving early.

You can then simply enter your PAC code here when you've got your new iD Mobile SIM plan and mobile number. We'll move your number to your new SIM Only plan the next working day if we receive it before 5:30pm Monday – Friday.

No. Some networks lock their phones so that they only accept SIM cards from that network. If your old phone was one purchased on contract from a network, it's much more likely to be locked than if you purchased the phone outright from a retailer.

If your phone is locked to a network, you'll need to unlock it. If you're out of contract but bought the phone from the network, you can usually get it unlocked for free. Simply contact the network and ask them to unlock it. (Even if you eventually move on from your old phone, by unlocking it your phone may well be worth more if you plan to sell it or trade it in against the cost of a new handset).

You can check if your phone is currently locked to a network by removing your existing SIM and inserting a SIM from another network in your phone. If it works and you get a mobile phone signal, it means that your phone is unlocked and you're good to go.

We'll always try to make sure you have the best possible network coverage to keep you connected, wherever you are. Use our network coverage checker to get an indication of what the signal is like in your area.

Different phones take different kinds of SIM cards. There are three different types: Standard SIM, Micro SIM and Nano SIMs. Usually, the latest devices take Nano SIMs, slightly older ones take Micro and the oldest handsets take a Standard SIM.

There's no difference in the function of each different SIM card size, so don't worry that you'll be able to do more with one than you would with another if you're moving between SIM card sizes.

Your iD SIM card that we'll send you is 'one size fits all', so you don't have to worry about ordering the correct size. The card you'll receive contains all three SIM types (standard, micro and nano), and you just need to pop out the size you need. You'll normally find the requirement in your phone's user manual if you're unsure about what size of SIM card will fit.

Don't panic if you manage to pop out the wrong size and lose the other parts of your SIM card. You can get SIM card adapters quite cheaply online to help rectify the issue and fit a small SIM card to a larger slot.

Usually, changing your SIM card is a pain-free process that takes under 5 minutes, but it can be fiddly due to their small size. The latest handsets normally arrive with a small ‘pin' device to push into the hole in the edge of your handset to pop out the SIM card tray. Occasionally, these are quite difficult to find but a paper clip or normal pin work just as well. Simply place your SIM on the tray and slide it back into your handset. Your phone's user manual will help you find the hole and let you know which way around you'll need to put your SIM.

How much data you need is up to you. Many people find that around 1GB-2GB on their SIM Only deal is fine for them, as you can make use of Wi-Fi coverage when you're out and about, like at coffee shops or hotels. You can also avoid using large amounts of data by pre-downloading any films or music albums you'll want to watch later on your own Wi-Fi.

If you regularly stream music or videos without being on Wi-Fi, you'll need a much greater amount of data. You can find out exactly how much data you'll need on your SIM by checking the network settings on your phone. Most phones will tell you how much data you've used, and you can change the time period on your device to ensure it reflects your regular usage.

If you need a new SIM card, the best thing to do with your old SIM is to treat it like a credit card and cut it up. SIMs can be used to store contacts, text messages and other information that would be worth a small fortune to scammers, so make sure that you dispose of it carefully so you can enjoy your new SIM Only deal worry free.

Yes, but you might find it easier to tether your tablet to your phone. Tethering is a way of turning your smartphone into a mobile internet hotspot - a sort of mini Wi-Fi, so you can get online quickly.

Please be careful as the data you use during tethering will come out of your SIM Only data allowances, and you can use up a lot of data very quickly if you don't take precautions.

The best way to ensure you're not eating up too much of your data allowance is by checking your remaining allowance on the iD Mobile app. At iD Mobile you can also set a Bill Cap so you don't rack up any Out of Plan Charges. Out of Plan Charges have a maximum limit, so you won't pay more than you want to.

If your phone allows tethering, you can usually enable it in ‘settings'.

At iD Mobile, we offer 30-day, 12-month and 24-month SIM plans. With a 30-day SIM Only contract, if you wish to end your contract with us after 30-days, you simply need to let us know. The same goes for changing your plan - if you fancy more minutes or need more data, you can change your plan on the iD Mobile App or My Account online.

You sure can! With our SIM Only deals, you have the option to upgrade to a 24-month phone plan once you’ve been with us for a few months. The SIM plans available for you to upgrade to will be determined by your initial credit check, your payment history and how long you’ve been with us. You’ll be able to check your eligibility to upgrade and what plans are available in the iD Mobile App or My Account online.

For a Pay Monthly SIM Only deal, you will need to pass a credit check. We'll always ask your permission before we run a credit check and we'll inform you about our decision as soon as possible.

Due to the absence of a handset, SIM Only applications are more likely to pass a credit check than Pay Monthly deals. However, if your application has been declined please don't hesitate to get in touch with our team. We'll try our best to find a solution that works for you.

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Legal stuff

Our fair usage policy applies to all pay monthly phone, SIM Only and Pay-as-you-go plans. Our open data policy applies to selected plans.

iD 5G is currently available on: Apple: iPhone 12, iPhone 12 Mini, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13, iPhone 13 Mini, iPhone 13 Pro, iPhone 13 Pro Max and Google: Pixel 6 and Pixel 6 Pro, and Huawei: P40, P40 Pro, and Motorola: Edge 20, Edge 20 Lite, Edge 20 Pro, G50, and Oppo: A54 5G, Oppo Find X2 Lite, Oppo Find X3 Lite, Oppo Find X3 Neo 5G, Oppo Find X3 Pro 5G and Samsung: Galaxy A22 5G, Galaxy A32 5G, Galaxy A42 5G, Galaxy A52s 5G, Galaxy S21 5G, Galaxy S21 + 5G and Galaxy S21 Ultra 5G only. Subject to coverage.