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Compare The Best Sim Only Deals For June

A SIM only deal is a contract that includes minutes, texts and data for a monthly fee, but don't include a phone. SIM only deals are usually a lot cheaper than a standard mobile phone monthly contract that's bundled with a handset. 

How does SIM only work?

It's precisely because SIM only deals don't include a phone that they're usually a lot cheaper than standard mobile phone monthly contracts. 

A SIM card itself is a microchip around the size of a postage stamp holding all of a mobile phone's configuration information, for example the mobile phone number and call plan. Without a SIM card, a mobile phone will not work. 

Once a SIM card has been activated it is permanently locked to the particular network, though not locked to a particular phone. That means you can easily change mobile phone handsets but keep your phone number, your friends’ phone numbers and any saved messages or photos.

Browse The Latest Sim Only Deals Online