Porting your mobile number from Three

Three logo

Leaving Three

How to switch from Three & take your mobile number

Call Three on 333 from a 3-Mobile handset or 0333 338 1001 from any other phone or landline, and ask for your "Port Authorisation Code" or PAC number.

  • Three 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 Three account will remain active until your number has been ported over to the new network. After the transfer is complete, your Three account will be automatically closed.
  • Three 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 Three, look for the best 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 mobile network operator who will then be able to port your existing phone number from Three. 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.

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.