Porting your mobile number from giffgaff to giffgaff

Leaving giffgaff

How to switch from giffgaff and transfer my number to giffgaff

Contact giffgaff (after you login) and let them know that you would like to transfer (or 'port-out') your number to another network. A Giff gaff customer support agent will then get back to you with your PAC code. Replies can be found in your giffgaff account message box.

If you wish to use the 'text-to-switch' service, simply SMS text PAC to 65075 free from your giffgaff SIM to request a PAC code by text message and begin the porting process.

  • giffgaff will provide your Porting Authorisation Code (PAC) either by SMS text message, via email, or over the phone if you contact them.
  • A PAC number is valid for 30 days. If you don't use it within thirty days it will expire and you will need to request a new one.
  • Your giffgaff online account settings will remain active until your number has been ported over to the new network. After the transfer is complete, your account will be automatically closed.

While you wait for your Port Authorization Code from giffgaff, get the best giffgaff offer for you. Many of these exclusive mobile phone deals are only available online, directly from the network providers listed here.

Got your PAC code from giffgaff?

Provide your PAC code from giffgaff to giffgaff online who will then be able to port your existing phone number from giffgaff. They will tell you what day the transfer is due to take place (usually within 48 hours).

Important: Do NOT cancel your SIM only or mobile contract before switching, otherwise you may lose your existing phone number and be unable to port it over. Once you give your new network provider your PAC code, your old billing account will be closed automatically when your number is successfully ported over.

Note: Credit on Pre-Pay / PAYG (Pay-As-You-Go) accounts cannot be transferred over and so any remaining credit balance will be lost after the switch is complete. If you have any credit left, one good option is to donate it to a charity by SMS text message before porting your number.

Joining giffgaff

How to switch to giffgaff and keep my giffgaff number?

First get your giffgaff package and activate your new SIM card.

Once you have done that, get the following information ready to follow the step-by-step instructions:

  • Your old giffgaff mobile phone number you want to keep.
  • The Porting Authorisation Code (PAC) from your previous giffgaff network.
  • The expiry date of the PAC number (valid for 30 days from the date of issue).
  • The temporary mobile number from your new giffgaff SIM card activation.
  • You may also need the new giffgaff SIM card serial number found on the back.

Make sure your giffgaff account and SIM have been activated. Then log in to your account and complete the transfer form to keep your old number. A Giff gaff customer support agent will then get back to you with your transfer date. Replies can be found in your giffgaff account message box.

Note: You may lose network service for a short period on the day of transfer. If this happens, turn your phone off and on occasionally, until you see the giffgaff signal on your mobile phone screen. This will indicate that the transfer is complete, and you can now use your existing phone number in your new mobile network provider.

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About giffgaff

giffgaff is a mobile telephone network running as a Mobile Virtual Network Operator (MVNO) using the United Kingdom O2 network. Owned by O2's owners Telefónica, giffgaff was launched on 25 November 2009.