Unlimited Data Only SIM Card Deals
Buy today and get 50% off for up to 3 months
Enjoy unlimited data, calls & texts on your terms. No long contracts, just total freedom for your mobile life. Plus, enjoy the absence of EU roaming fees until 2026, making it easier to stay connected while travelling.
Why Our SIM Only Plans Stand Out
Unlimited Data, Calls & Texts
Never stress over usage limits again. Stream, browse, work, and stay in touch—with our SIM-only contracts, it’s all truly unlimited.
Ultimate Flexibility
Flexible contracts means you don't have to be locked in. You can join different plans with options for 1-, 12-, or 24-month commitments, making it easy to choose a plan that fits your needs.
Choose Your Network
With a choice of O2 or Vodafone SIM cards you will be on one of the UK's largest mobile network operator without the worry of long contracts
Keep Your Number or Start Fresh
Transfer your existing number in minutes or get a brand-new number from us. Switching networks is easy with the Text to Switch service, allowing you to seamlessly transfer your phone number without any hassle. Simply text PAC to 65075 and start the process of transferring your number today.
Get Rewarded for Spreading the Word
Refer a friend and get £10 credit when they pay their first bill. Enjoy even more value from your deal.
5G & 4G Speeds, All SIM Types Supported
Get blazing-fast internet on your device, wherever you are. We support SIM, Micro-SIM, Nano-SIM & eSIM across phones, tablets, and even mobile broadband devices.
How It Works
Choose your SIM-only plan
Select your preferred network: O2 or Vodafone. Pick the contract length and features that fit your needs.
Order online with a few taps. Your SIM, Micro-SIM, Nano-SIM or eSIM will arrive within 7 working days.
Activate & Get Connected. Follow the activation link that was sent to you by email. Pop your SIM into your device and start enjoying unlimited data, calls, and texts.
Switch or Transfer with Ease. Keep your existing number with a simple PAC code transfer or get a new one instantly.
Enjoy Unlimited Freedom. Flexible contracts, no hassle - just connectivity on your terms.
Why Choose The SIM Warehouse
30 Day Rolling Contracts
No lengthy contracts with our monthly rolling plans. Change your plan or cancel anytime.
Unlimited Calls & Texts
All of our plans include unlimited UK calls and texts.
Choose Your Network
Choose your favourite network with O2 and Vodafone SIM Cards available.
Get Rewarded
Get £10 credit for every friend you refer when they pay their first bill.
