Transfer your mobile number from iD Mobile to Three

Leaving iD Mobile

How to switch from iD Mobile and transfer my number to Three

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.

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

  • iD Mobile will provide your Porting Authorisation Code (PAC) either by SMS text message, via email, or over the phone if you contact them.
  • 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 iD Mobile online account settings will remain active until your number has been ported over to the new network. After the transfer is complete, your account will be automatically closed.

While you wait for your Port Authorization Code from iD Mobile, get the best Three offer for you. Many of these exclusive mobile phone deals are only available online, directly from the network providers listed here.

Got your PAC code from iD Mobile?

Provide your PAC code from iD Mobile to Three online 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 SIM only or mobile contract before switching, otherwise you may lose your existing phone number and be unable to port it over. Once you give your new network provider your PAC code, your old billing account will be closed automatically when your 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 by SMS text message before porting your number.

Joining Three

How to switch to Three and keep my iD Mobile number?

First get your Three package and activate your new SIM card.

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

  • Your old iD Mobile 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 Three SIM card activation.
  • You may also need the new Three SIM card serial number found on the back.

Call Three on 333 from a 3-Mobile handset or 0333 338 1001 from any other phone or landline. You will need to have a Three account already active before you can transfer your old number.

Alternatively, you can fill in the online form to move your existing number to Three.

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 Three 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.

...more info on Three

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About Three

Three is the brand name of CK Hutchison Holdings under which several UMTS-based mobile phone networks and Broadband Internet Providers are operated in Australia, Austria, Denmark, Hong Kong, Macau, Indonesia, Ireland, Italy, Sweden, and the United Kingdom.

The company was founded in 2002. Three operates 3G and 4G services, and maintains a national roaming agreement with Orange to provide 2G services where 3G is unavailable.

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.