Porting your mobile number from TalkTalk Mobile to O2

Leaving TalkTalk Mobile

How to switch from TalkTalk Mobile & take your mobile number to O2

Contact TalkTalk customer services to request your PAC (Porting Authorisation Code) by dialing 2883 from your TalkTalk Mobile or 0345 172 0088 from another phone. Your TalkTalk Mobile will remain active until your number has been ported over to your new network. After the transfer is complete, your account will be automatically closed.

  • TalkTalk Mobile will provide your Port Authorisation Code (PAC number) either over the telephone, 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 TalkTalk Mobile account will remain active until your number has been ported over to the new network. After the transfer is complete, your TalkTalk Mobile account will be automatically closed.
  • TalkTalk Mobile must issue you with a PAC number within 2 working days of your request, or a reason for why it cannot be issued, in accordance with Ofcom's "General Conditions of Entitlement". http://ofcom.org.uk

Once you have received your Port Authorization Code from TalkTalk Mobile, look for the best O2 offer that is suited to you. Many of the best mobile phone deals are available exclusively online, directly from the network providers listed here.

Finally, provide your PAC code to your new O2 mobile network operator who will then be able to port your existing phone number from TalkTalk Mobile. 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 might not be able to port over your number. Once you provide your new network provider with your PAC code, your old account will automatically be cancelled when the number is migrated over.

Note: Credit on a PAYG (Pay-As-You-Go / Pre-Pay) account cannot be transferred and any remaining credit will be lost after the switch over.

Joining O2

How to switch to O2 & bring your TalkTalk Mobile number with you

The first step, if you haven't already, is to sign up with O2.

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

  • Your original mobile phone number you want to keep.
  • The Port Authorization Code (PAC) from your previous TalkTalk Mobile network.
  • The expiry date of the PAC number (valid for 30 days from the date of issue).
  • The temporary mobile number from your new O2 sim card.
  • You may also need the new SIM card number found on the back.

Contact O2 customer services and ask to transfer your old number. You can reach them either from your 02 mobile phone on 4445 for Pay As You Go, or 202 for Pay Monthly contracts. Alternatively from a landline: dial 0344 8090222 for Pay As You Go customer Service or 0344 8090202 for Pay Monthly customer Service.

Alternatively, you can fill in the online O2 form and they will contact you when the transfer is complete.

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 O2 signal on your mobile phone screen. This will indicate that the transfer is complete.

Visit O2 online for more information and their latest offers on mobile phones, contracts and PAYG deals.

About O2

O2, the trading name of Telefónica Europe plc is a European broadband and mobile telephony company that originated as a collection of worldwide telecommunications companies, known in the later half of the 1990s as BT Wireless, and a global mobile data business known then as Genie Internet, both subsidiaries of British Telecommunications.

About TalkTalk Mobile

TalkTalk is a company which provides television, telecommunications, Internet access, and mobile network services to businesses and consumers in the United Kingdom.

Originally just a provider of fixed line telephony services to consumers, TalkTalk now offers fixed and mobile telephony and broadband services to consumers.