Porting your mobile number from giffgaff to Tesco Mobile

Leaving giffgaff

How to switch from giffgaff & transfer your mobile number to Tesco Mobile

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 get your PAC code by text and begin the porting process.

  • giffgaff will provide your Porting Authorisation Code (PAC) either over the phone, by SMS text message or via email.
  • A PAC code 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 account will remain active until your number has been ported over to the new network. After the transfer is complete, your giffgaff account will be automatically closed.

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

Finally, provide your PAC code to your new Tesco Mobile mobile network operator 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 contract before switching, otherwise you may lose your existing phone number and be unable to port it over. Once you provide your new network provider with your PAC code, your old account will be clsoed automatically once the 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 before porting your number.

Joining Tesco Mobile

How to switch to Tesco Mobile & keep your giffgaff mobile number

The first step is to sign up with Tesco Mobile to get your new SIM card.

Once you have done that, ensure you have the following information ready:

  • Your original 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 Tesco Mobile sim card.
  • You may also need the new SIM card number found on the back.

Contact Tesco Customer Care by dialing 4455 from your Tesco Mobile phone or call them on 0345 301 4455 from another telephone. Let customer services know that you would like to transfer your old number to your new TescoMobile account and provide them with the PAC number from your old network provider.

Alternatively, you can text PORT to 23424 free from the Tesco Mobile number you want to replace.

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 Tesco Mobile 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.

Visit Tesco Mobile online for more information and their latest offers on mobile phone deals.

About Tesco Mobile

Tesco Mobile is a mobile virtual network operator (MVNO) in the United Kingdom operated by Tesco, using the O2 network as its carrier.

On 30 January 2014, Tesco Mobile started offering 4G service for its Pay Monthly and Sim Only customers at no extra cost, extending the service to Pay As You Go customers on 24 July 2014.

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.