Depending on the age of your phone, it will use one of these SIM sizes:. When you buy a SIM-only plan, your chosen network will supply you with a three-in-one SIM card that will work on any phone.

The best SIM only deals in February 12222

Thinking about switching networks, but not sure on the next step? Check out our handy guide on switching your mobile network and keeping your number, and we'll lead you through the surprisingly simple process. Vodafone CEO: Successful trial of next-generation 4G by EE sees major speed boost.

Over 3 million are now using Three 4G - double Vodafone, equalling O2.

SIM Only Plans

This website uses cookies as described in our cookie policy , to see what cookies we use and to set your own preferences, click here. Otherwise, by clicking on or navigating this site, you accept our use of cookies. Should I switch to a SIM-only deal? Should I go for a short-term or long-term SIM deal? Can I keep my current telephone number?

How reliable are the smaller, less well-known networks? What kind of SIM card do I need? I'm ready to switch networks. Best contract SIM-only deals Best buy deals. Get deal. Compare contract SIM-only deals.

Compare 30 day SIM-only deals. Unlimited 4G data Unlimited minutes Unlimited texts. Compare more unlimited and big data SIM deals. Compare data-only SIM deals. But the good news is that there's a simple to check for sure whether your phone is unlocked.

3 Sim Only Deals () - Best Sim Only Offers on Three - 3G

You could borrow a friend's or family member's just to test it. In the event that your phone accepts the SIM and you've got a mobile-phone signal, your phone is unlocked and you won't need to get it unlocked. If there's no signal, your phone is locked. If that's the case, you'll have to call your network to ask them to unlock your smartphone and may have to pay a charge. That's good news. That means you're good to go. The next step is to find a SIM only deal that suits you.

The best way to do is that by using the uSwitch comparison tables above. For some guidance as to which network to choose, take a look at all networks that picked up prizes at the uSwitch awards in the section below. Below, you'll find all the mobile networks that scored highly at the uSwitch Mobiles Awards , whether that's for customer service, coverage or roaming.

Determined by consumer research as well as the decisions of a panel of judges, comprising technology journalists and industry expert, we're confident that the awards represent a seal of quality. The best way to do this to ring your network. Your SIM card should arrive within two days. If your phone is locked, you'll also need to ask them to unlock your phone. You may find you're encouraged to stay by their customer retentions department. If you are it's important that you're firm with them and insist that you're determined to switch. A charge may apply for unlocking your phone.

Once the phone is unlocked you can insert your new SIM and you're all set. If you want to keep your number when you change networks, you'll need to ask for a PAC code from your current provider. To get your PAC code you can either phone or email your network or use a PAC code request form that you can fill on your network's website.

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To begin the number transfter you need to ring or email the network you're joining and supply them with your PAC code. You must do this within 30 days of the PAC code being issued.

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In the meantime, leave your old SIM in your phone. To check if the transfer is complete, just insert your new SIM in your handset and see if your new number is registered on your new network. If you are, everything's gone according to plan. Find out more about keeping your number when you switch network.

The process of moving network has been designed to keep the time you're without a service down to a minimum. Even after you've given the network you're joining your PAC code see above for a more detailed explanation of PAC codes , so you'll still be able to take calls and receive texts during this time. When the transfer to your new network is actually happening, your service will be down for a very short period. To test when the transfer has been done, simply insert your new SIM in the phone and restart it.

If you've got a service, you're good to go. Good news. Upgrade Price Promise. Contact us Email or call us Contact a store Register for our latest offers New. Menu Search Stores Compare Basket. The following items have been added to the basket:.

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