A SIM card or SIM (subscriber identity module) is a type of integrated circuit, often in the form of a smart card.

Compare the best SIM only deals which includes minutes, texts and mobile data for a monthly fee without a phone. SIM only deals are normally cheaper than a traditional mobile phone contract.

Jan 24, 2026 · What is a SIM card? SIM stands for “ Subscriber Identity Module,” and a SIM card is essentially the card that holds your carrier’s subscriber identity data.

Get phones, tablets, Mobile Broadband and SIM Only deals on the UK’s Fastest 5G Network.

Compare our best SIM only deals. If you’re happy with your current phone and don’t want a monthly contract with a new phone, choose a SIM only deal.

Unleash your imagination and create a unique world of Sims that’s an expression of you! Explore and customize every detail from Sims to homes, and much more. A variety of Sims are yours to …

Discover great deals on SIM Only plans with Three. Explore 30-day, 12- and 24-month contracts and Pay As You Go across 5G SIMs, Unlimited Data SIMs and more.

Choose from our best SIM only deals. A cost-effective choice, SIM only contracts skip the handset cost, and let you switch devices whenever you want. Our range of SIM only deals are tailored for every …

Our SIM card deals make it easy for you to stay connected. Whether you want the convenience of a SIM only contract, the flexibility of a pay as you go SIM, or the freedom of an unlimited data SIM, we’ve …