Porting your mobile number from iD Mobile to BT Mobile

Leaving iD Mobile

How to switch from iD Mobile & take your mobile number to BT Mobile

Contact iD Mobile customer services by calling 7777 free from your iD Mobile phone or 0333 003 7777 from any other telephone to request your PAC code. Make sure you ask for the PAC before the end of any contract agreement.

  • iD Mobile will provide your Porting Authorisation Code (PAC) 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 iD Mobile account will remain active until your number has been ported over to the new network. After the transfer is complete, your iD Mobile account will be automatically closed.
  • iD 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

Many of the top mobile phone deals are available exclusively online, directly from the network providers listed here. So once you have received your Port Authorization Code from iD Mobile, get the best BT Mobile offer suited to you.

Finally, provide your PAC code to your new BT Mobile mobile network operator who will then be able to port your existing phone number from iD 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 automatically be closed 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 BT Mobile

How to switch to BT Mobile & bring your iD Mobile number with you

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

Call BT by dialing 150 from your BT Mobile or 0800 800 150 from another phone or +44 179 359 6931 from abroad. Have your BT phone or account number ready, along with your Porting Authorisation Code (PAC), and let them know that you'd like to transfer your old mobile phone number across to them.

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

About BT Mobile

BT Mobile is a mobile virtual network operator (MVNO) provided by BT Consumer and running on the EE network (which is now owned by BT Group following an acquisition that completed in January 2016).

BT Mobile is currently a SIM-only service, and operates alongside BT Business Mobile which is provided by the BT Business division.

About iD Mobile

iD Mobile is a mobile virtual network operator (MVNO) operating in the United Kingdom as iD Mobile Limited, using the Three network. It is owned by Carphone Warehouse and was launched on 12 May 2015.

iD only offers 4G pay-monthly contracts for 12 or 24 months (with a handset) , monthly 30-day rolling or Pay-as-you-go SIM-only deals.