All SIM cards

Discover our range of All SIM cards

Need a plan that fits your life, not the other way round? Our range of SIM cards covers everything from flexible SIM only deals to long-term value plans. Pick the data, minutes and texts you need each month, change when your routine shifts, and keep the phone you love. You will find options from networks including iD Mobile, O2 and more, with the cheapest SIM only deals clearly marked so you can compare at a glance.

Choosing a SIM is straightforward once you know what your device uses. Most modern phones take a nano SIM, older models may need micro or standard. Many handsets also support dual SIM, so you can keep work and personal numbers separate, or use a local SIM when travelling and keep your UK number active. If your phone supports eSIM you can load a plan digitally and free up the physical slot for a second number.

SIM only contracts are popular because you are not paying off a handset. You keep your monthly costs in check, can change allowances if your data needs grow, and you are free to upgrade your phone whenever you like. Pay monthly plans are great for steady use, while 30-day rolling options keep things flexible. Keep an eye on extras such as EU roaming, Wi-Fi calling and 5G access when you compare.

Which is the number one SIM card?

There is no single winner. Coverage varies by area, so check network maps and ask friends locally. Pick the plan that gives you solid signal where you live and work.

How many SIM sizes are there?

Three physical sizes are common: standard, micro and nano. Triple-cut SIMs supplied by networks can be snapped down to the size you need.

What is SIM 1 vs SIM 2?

On a dual-SIM phone these are the two slots or profiles. You can choose which one handles calls, texts and data in the settings.