This guide explains how to switch from Mozillion to Giffgaff and keep your mobile number.
Most number transfers complete within 1 to 2 working days once Giffgaff has your PAC code.
If you want a new number instead, text STAC to 75075 and give the code to Giffgaff.
This switch will take you from EE's network to O2's network. Coverage may differ in some areas. Check Giffgaff's coverage checker before switching.
Joining Giffgaff and leaving Mozillion
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
- Transfer your number from 1pMobile to Giffgaff
- Transfer your number from Asda Mobile to Giffgaff
- Transfer your number from Chattr to Giffgaff
- Transfer your number from EcoTalk to Giffgaff
- Transfer your number from EE to Giffgaff
- Transfer your number from Grade Mobile to Giffgaff
- Transfer your number from Honest Mobile to Giffgaff
- Transfer your number from iD Mobile to Giffgaff
- Transfer your number from Lebara to Giffgaff
- Transfer your number from Lycamobile to Giffgaff
- Transfer your number from Mozillion to Giffgaff
- Transfer your number from O2 to Giffgaff
- Transfer your number from ParentShield to Giffgaff
- Transfer your number from Sky Mobile to Giffgaff
- Transfer your number from Smarty to Giffgaff
- Transfer your number from Spusu to Giffgaff
- Transfer your number from Talk Home to Giffgaff
- Transfer your number from Talkmobile to Giffgaff
- Transfer your number from Tesco Mobile to Giffgaff
- Transfer your number from Three to Giffgaff
- Transfer your number from Vodafone to Giffgaff
- Transfer your number from Voxi to Giffgaff
To keep your number, request a PAC code from Mozillion and give it to Giffgaff.
You can usually give Giffgaff your PAC code when you order, or after your new SIM card or eSIM has been activated.
1. Request a PAC code from Mozillion
Here is how to get your PAC (Porting Authorisation Code) from Mozillion:
- Text: Text "PAC" to 65075 from your Mozillion 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).
- Phone: Call Mozillion on 020 3893 8441.
- Email: Email help@mozillion.com and request your PAC code.
- Online: Use Mozillion's online contact form to request your PAC code.
2. Order a SIM only deal from Giffgaff
If you have not ordered yet, compare current Giffgaff SIM only deals below.
5G
5G
5G
If you already have your new SIM, continue to Step 3.
If Giffgaff asks for your PAC code during checkout, enter it there. If not, wait for your new SIM or eSIM to activate, then give Giffgaff the PAC code using the method below.
Giffgaff does not offer phone support, so manage everything through the app or community forum.
Giffgaff does not run a credit check, so there is nothing to wait for during sign-up.
Giffgaff offers eSIMs, so you can switch without waiting for a physical SIM to arrive.
3. Give the PAC code to Giffgaff
Once you have your PAC code, here is how to give it to Giffgaff:
- Activate your Giffgaff SIM first: Your Giffgaff SIM must be active before you can transfer a number to it.
- Submit your PAC: Go to the number transfer page in your Giffgaff account, enter your PAC code and pick your transfer day.
Expect intermittent service on both SIMs until around 9pm on the transfer day. Requests made on weekends or bank holidays are processed the next working day. Giffgaff does not offer phone support.
4. Wait for your number transfer to Giffgaff to complete
Giffgaff will send the transfer request to Mozillion.
Your number should move to your new Giffgaff SIM within 1 to 2 working days.
Tell your friends.