Unfortunately, you can’t use a PAC to transfer a mobile number from one iD account to another iD account, @Simon Lawccc.
- Ask iD Mobile for a PAC for the ‘old’ account - before they have closed the ‘old’ account.
- Use the PAC to transfer the number you want to keep over to a PAYG service provider like ASDA Mobile, giffgaff, LEBARA, etcetera.
- Once the number you want to keep works properly with your PAYG provider, ask them for a PAC.
- Give the PAC to iD to use with your ‘new’ account.
It’s a faff and will take several days (at least) to complete, but you should end up with the number you want linked to your ‘new’ iD account.