Switch from Three to EE and keep your number using a PAC code

Last Updated: 29th July 2025

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Are you thinking about leaving Three and switching to EE? Then you're in the right place! Switching networks and keeping your number in 2025 is simple and easy thanks to Ofcom's policy changes.

We've put together a quick and easy to use switching guide. Our guides allow you to select the network you wish to switch to and from, and you will be given a step by step guide on how to keep your number and move to a new SIM Only Deal.

It is worth noting that if you wish to join EE and get a new number then you can use a STAC code in order to get a new number and will cancel your existing contract.

Joining EE and leaving Three

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Select which network you would like to switch from and to and we will give you precise instructions on how to keep your number when switching to a new SIM Only Deal.

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Joining EE and transferring your number from Three is a simple process and usually takes no longer than 1-2 working days.

The process which will go through in more detail below involves requesting a PAC code from Three and handing it to EE.

You can either hand the PAC code over to EE during the ordering process or after you have received your new SIM card or eSIM has been activated.

1. Request a PAC code from Three

You can keep your current phone number, avoiding the hassle of memorising a new one or updating your contacts. You will need a PAC (Porting Authorisation Code) from Three to begin the switch.

Here is how to get it:

Text: The quickest way is to text "PAC" to 65075 from your Three phone. You will receive your code within 2 minutes. Ofcom, the UK's communications regulator, provides this free service.
Online: Visit Three's website and request a PAC code through their live chat service.
Over the phone: Call Three on 333 from your Three SIM or 0333 338 1001 from any other phone.
- Their customer service line is open;
  - Monday through Friday, 8 am to 8 pm
  - Saturday and Sunday, 9 am to 6 pm.
In-store: Visit a Three store and request a PAC code from a sales assistant.

Your PAC code is valid for 30 days, so you can request it before or after getting your new SIM card.

If you want a new number and do not wish to keep your current number, you will need to request an STAC code instead of a PAC code. Text "STAC" to 75075 to get your STAC code.

2. Order a SIM only deal from EE

If you haven't yet ordered your new SIM Only deal, you can use our free comparison engine, which will show you the cheapest sim only deals available on the market.

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If you already have your new SIM Card, feel free to skip to step 3 of this article

During the ordering process you may be given the opportunity to share your PAC code from Three to EE, if you choose this option then the number transfer process will start once your new sim card arrives and you activate it in by putting it in your phone and turning it on, this also means you can skip to step 4 of this article if you wish!

If you are not given the opportunity to hand over your PAC code when ordering then there's no need to panic. Once your new sim card from EE has arrived, just continue to step 3 of this article.

It is also worth calling out that it doesn't matter if you are able to hand over your PAC code from Three whilst buying your new sim from EE or not it's just slightly more convenient but the outcome is the same!

3. Give the PAC code to EE

Once you have your PAC code, follow these steps to give it to EE:

Online: Give your PAC code to EE via their online transfer form.
Phone: Call EE on 150 from your EE phone or 07953 966250 from another phone.
- Open everyday from 8am - 6pm.
In-store: Pop in to your nearest EE store and give them your PAC code.

EE will then handle the transfer of your number.

Important Notes: