This guide explains how to switch from Chattr to Three and keep your mobile number.
Most number transfers complete within 1 to 2 working days once Three has your PAC code.
If you want a new number instead, text STAC to 75075 and give the code to Three.
This switch will take you from O2's network to Three's network. Coverage may differ in some areas. Check Three's coverage checker before switching.
Joining Three and leaving Chattr
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. Show Quick Links
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- Transfer your number from Voxi to Three
To keep your number, request a PAC code from Chattr and give it to Three.
You can usually give Three your PAC code when you order, or after your new SIM card or eSIM has been activated.
1. Request a PAC code from Chattr
Here is how to get your PAC (Porting Authorisation Code) from Chattr:
- Text: Text "PAC" to 65075 from your Chattr phone. You will get a text back with your code within a minute. This is a free service from Ofcom (the UK's communications regulator).
- Email: Email Chattr at hello@chattr.co.uk to request your PAC code.
Chattr is an online-only network with no stores or phone line.
2. Order a SIM only deal from Three
If you have not ordered yet, compare current Three SIM only deals below.
5G
5G
5G
If you already have your new SIM, continue to Step 3.
If Three asks for your PAC code during checkout, enter it there. If not, wait for your new SIM or eSIM to activate, then give Three the PAC code using the method below.
Three offers roaming in over 160 destinations through Go Roam, but on many plans this is a daily charge rather than an inclusion, so check your plan before ordering.
Three offers eSIMs, so you can switch without waiting for a physical SIM to arrive.
3. Give the PAC code to Three
Once you have your PAC code, here is how to give it to Three:
- Online: Enter your PAC code at checkout when you order, or fill in the number transfer form on Three's website afterwards.
- Phone: Call 333 from your Three phone or 0333 338 1001 from any other phone.
- In-store: Visit a Three store and a member of staff will transfer your number using your PAC code.
4. Wait for your number transfer to Three to complete
Three will send the transfer request to Chattr.
Your number should move to your new Three SIM within 1 to 2 working days.
Tell your friends.