1) Check you're eligible to switch from EE
If you're out of contract with EE, you can switch for no charge whenever you like.
Not sure if you're out of contract? To find out, you can call 150 from your EE phone to speak to customer support. Or on 07953 966 250 from any other phone (standard network charges apply).
Opening hours are 8am-8pm Monday-Friday. 8am-6pm at weekends.
Don't fancy phoning? Log in to your EE account online instead.
Keeping your old phone and signing up for a new SIM-only deal with a new network? Okay, that means there’s a chance you may need to get your phone unlocked.
The good news is that this is very simple. Just head to EE’s site where you’ll find a form to fill in to unlock your smartphone.
Once that’s done, they’ll provide you with a personal unlocking key (PUK) that you can use to unlock your handset.
2) Contact EE to cancel your contract and get your PAC code
Once you’ve found a new deal and signed up, your next task is to ring EE and tell them you want to leave. They’ll give you a contract end date that you should make a note of.
While you’re on the phone to them, you also need to ask for a PAC Code. It’s this short alphanumeric code that will enable you to transfer your existing phone number to the network you want to join. EE is bound by law to provide a PAC Code within two hours of you asking for it.
3) Find and buy a new phone or SIM deal from Three
Out of contract and ready to switch? Good news. Your next task is to sign up for a new phone contract or SIM only deal from Three. Once you’ve passed Three’s credit checks, you’ll receive your phone in the post.
4) Contact Three to give them your PAC code
We’re almost there now. Next you’ll just to ring Three to give them your PAC. You can reach their customer support team on 0333 338 1001 from a landline (standard network rates apply).
5) Insert your new Three SIM card
If you got a new phone as part of your contract, take the pin-key included in the box and unlock the handset's SIM tray. Then insert your Three SIM card.
If you went for a SIM-only deal instead, you can just put the Three SIM in your existing phone.
While the number transfer is taking place, you’ll be given a temporary phone number that you can use and on which people can contact you.
6) Wait for your number to be transferred
The transfer should be complete the next working day. However, this can vary from network to network and sometimes depends on whether the day after you make your call is a working day or a weekend.