Porting your mobile number from TalkTalk Mobile to T-Mobile

Leaving TalkTalk Mobile

How to switch from TalkTalk Mobile & transfer your mobile number to T-Mobile

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.

If you wish to use the 'text-to-switch' service, simply SMS text PAC to 65075 free from your TalkTalk Mobile SIM to get your PAC code by text and begin the porting process.

  • TalkTalk Mobile 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 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.

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 TalkTalk Mobile, get the best T-Mobile offer tailored to you.

Finally, provide your PAC code to your new T-Mobile 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 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 T-Mobile

How to switch to T-Mobile & keep your TalkTalk Mobile mobile number

The first step is to sign up with T-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 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 T-Mobile sim card.
  • You may also need the new SIM card number found on the back.

Call T-Mobile on 150 from your TMobile number, or on 0207 362 0200 from another phone and give them your PAC code from your previous network provider.

T Mobile will then confirm with you the switch date for when your original number will be automatically ported over to your new T-Mobile SIM.

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 T-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 T-Mobile online for more information and their latest offers on mobile phone deals.

About T-Mobile

T-Mobile UK is a mobile network operator in the United Kingdom, owned by Deutsche Telekom since 1999, and originally launched as One2One.

In 2009, Deutsche Telekom and Orange SA announced that the T-Mobile network was to be merged with Orange UK in a joint venture with EE Limited to form the UK's largest mobile network.

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.