Change phone number

[Chris1989]

I need to change my phone number on my pay monthly account, but I need to be able to keep the old number on a PAYG sim.

The idea being I would pop it in to an old phone and pick up any voicemails each day for a few weeks so that I do not miss any important calls until everyone has my new number.

Any ideas how to do this?

[MI5 · Accepted solution]

You need to switch your current number to PAYG then take a new contract or a simo tariff.
It isn't possible to do it any other way and fees may be applicable if you haven't reached the minimum term of your current contract.

[Chris1989]

Thanks 

[MI5]

No worries mate.