Porting your mobile number from T-Mobile to ASDA Mobile

Leaving T-Mobile

How to switch from T-Mobile and transfer my number to ASDA Mobile

T-Mobile customer services can be contacted by either dialing 150 from a T-Mobile SIM, or 0207 362 0200 from another phone, to request your "Port Authorisation Code" (PAC) at the same time that you give your notice of leaving TMobile.

If you wish to use the 'text-to-switch' service, simply SMS text PAC to 65075 free from your T-Mobile SIM to get your PAC code by text and begin the porting process.

  • T-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 T-Mobile account will remain active until your number has been ported over to the new network. After the transfer is complete, your T-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 T-Mobile, get the best ASDA Mobile offer tailored to you.

Finally, provide your PAC code to your new ASDA Mobile mobile network operator who will then be able to port your existing phone number from T-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 ASDA Mobile

How to switch to ASDA Mobile and keep my T-Mobile number?

The first step is to select your ASDA Mobile deal and receive 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 T-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 ASDA Mobile sim card.
  • You may also need the new SIM card number found on the back.

Call the ASDA Mobile Helpline on 2732 from your ASDA Mobile phone or 0800 079 2732 from a landline and tell them your PAC code number and the network you are moving from. ASDAmobile will send you a text to let you know when your number has been ported across.

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 ASDA 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.

For more information and latest offers on mobile phone deals, visit ASDA Mobile online

Compare ASDA Mobile vs T-Mobile

About ASDA Mobile

Asda Mobile is a mobile virtual network operator (MVNO) in the United Kingdom, operated by ASDA, using the EE network, having previously used the Vodafone network until December 2013.

Asda Mobile is available in over 360 stores across the UK and online through purchasing either a SIM Card (Standard, Micro or Nano SIM) or through an Asda Mobile handset.

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.