Get giffgaff PAC code to keep number & switch to VOXI network

Keep my giffgaff number

How to get a PAC code from giffgaff & transfer my number to VOXI

Contact giffgaff (after you login to your account) and let them know that you would like to transfer (or 'port-out') your number to another network. Giff gaff customer support 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 giffgaff PAC code by text message and begin the porting process.

  • giffgaff will provide your PAC code (Porting Authorisation Code) either by SMS text message, email, over the phone if you contact them directly, or through an online giffgaff login.
  • 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 account will remain active until your number has been ported over to your new VOXI network. After the transfer is complete, your old giffgaff account will be automatically closed.

While you wait to get your giffgaff PAC code, find the best VOXI online offer for you. Many of these exclusive mobile phone & SIM only deals are only available online, directly from the network providers listed here.

Got your giffgaff PAC code?

Provide your PAC code from giffgaff to VOXI who will then be able to port your existing giffgaff number. 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 current phone number and be unable to port it over. Once you give VOXI your giffgaff PAC code, your old giffgaff billing account will be closed automatically when your mobile phone number is successfully ported over.

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

Transfer my number to VOXI

How to switch to VOXI and keep my giffgaff number?

First get your VOXI deal and activate your new SIM card.

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

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

With your PAC code and mobile phone number to hand, contact the VOXI support team by dialing 191 from your new VOXI sim, or call 03333 040 191 from any other phone.

If you are switching from Vodafone or Talkmobile, you do not need a PAC code as they run on the same network. Just let them know that you want to keep your mobile number when switching to VOXI.

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 VOXI signal on your mobile phone screen. This will indicate that the transfer is complete, and you can now use your old phone number in your new mobile network provider.

...more info on VOXI

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Compare VOXI vs giffgaff

About VOXI

VOXI is a UK mobile virtual network operating on the Vodafone network. VOXI offers SIM-only contract-less plans with rolling 30 day plans, plus unlimited data for social media and chat messaging apps.

Created for the social media enthusiasts, VOXI is well suited for regular use of sites like Facebook, Instagram, Pinterest, Snapchat, Twitter, Viber and WhatsApp.

VOXI Network Features

Host Network Provider: Vodafone (MVNO)

2G Network Coverage: Yes

3G Network Coverage: Yes

4G Network Coverage: Yes

5G Network Coverage: Yes

WiFi Calling: No

4G Calling (VoLTE): No

Data Rollover: No

Tethering Allowed: Yes

eSIM: No


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.

giffgaff Network Features

Host Network Provider: O2 (MVNO)

2G Network Coverage: Yes

3G Network Coverage: Yes

4G Network Coverage: Yes

5G Network Coverage: Yes

WiFi Calling: No

4G Calling (VoLTE): No

Data Rollover: No

Tethering Allowed: Yes

eSIM: No