What is a SIM only deal?
A SIM only deal is a mobile plan that provides you with a SIM card containing a set allowance of data, minutes, and texts. Unlike phone contracts, it doesn’t include a handset, making it a cheaper and more flexible option.
Save on a SIM only contract by comparing the best deals across a range of UK networks.
Looking for the best SIM only deals? Whether you want unlimited data, the lowest possible monthly cost, or flexibility with a 30-day rolling plan, we’ve got you covered.
SIM only plans are perfect if you’re happy with your current phone or have already bought a SIM free device. Unlike traditional phone contracts, SIM only contracts don’t tie you to a handset, giving you more flexibility and often saving you money
No need to pay for a phone, just your data, calls, and texts.
Choose from 30-day, 12-month, or 24-month SIM contracts.
Many networks offer larger data allowances compared to phone contracts.
Keep your number and move between networks with a simple PAC code.
We make it easy to compare SIM only plans so you can find the right deal based on your budget and data needs. Here’s a look at what some of the UK’s most popular SIM only networks offer:
Not sure which SIM only plan to choose? Here’s what to consider:
Set your budget and filter deals accordingly. Whether you need the best SIM only deals under £10 or premium plans with unlimited data, we compare them all.
From SIM only contracts with 1GB data to unlimited data plans, choose the right level for your usage.
Want the flexibility of a 30-day rolling contract? Or are you happy to commit to a 12-month or 24-month SIM contract deal for better value?
Make sure the provider you choose has strong coverage in your area. All the networks we list use well-established UK infrastructure
Got questions about SIM only deals? We’ve answered the most common queries to help you find the best plan for your needs
A SIM only deal is a mobile plan that provides you with a SIM card containing a set allowance of data, minutes, and texts. Unlike phone contracts, it doesn’t include a handset, making it a cheaper and more flexible option.
To compare SIM only deals, consider factors such as price, data allowance, contract length, and network coverage. Use our comparison tool to filter by your budget and usage needs.
Pay-as-you-go (PAYG) plans require you to top up credit, while SIM only contracts provide a fixed allowance of data, calls, and texts for a monthly fee. Many SIM only plans also offer rolling 30-day options for more flexibility.
It depends on your needs. SMARTY, Giffgaff, and iD Mobile are great for budget-friendly plans, while VOXI and Lebara offer unique perks like unlimited social media and international calls. If you need reliable 5G coverage, O2, Three, and Vodafone are solid choices.
Yes, you can transfer your existing number by requesting a PAC (Porting Authorisation Code) from your current provider and giving it to your new network. The process usually takes one working day.
Yes, many networks offer unlimited data SIM only contracts, including Three, Vodafone, SMARTY, and VOXI. Be sure to check for fair usage policies, as some networks may cap hotspot use or restrict speeds after a certain threshold.
The cheapest SIM only contracts typically start at around £5-£10 per month. ASDA Mobile, iD Mobile, and Talkmobile often have low-cost deals with smaller data allowances for light users.
Most networks now include 5G at no extra cost, provided you have a 5G-compatible phone and are in a 5G coverage area. Networks such as Three, Vodafone, O2, and iD Mobile offer widespread 5G access.
Yes, some networks offer no credit check SIM only deals, including Giffgaff, SMARTY, Lebara, and VOXI. These are ideal for those with poor credit or looking for a contract-free option.
Most SIM only plans come in 30-day rolling, 12-month, and 24-month contracts. A longer contract often provides better value, while a rolling SIM contract offers more flexibility to switch when needed.