06-03-2017 11:46 AM
06-03-2017 11:58 AM
It's not clear from your post what exactly you are trying to do.
If you simply want to port your Three number over to 48 so that it becomes the number used on your 48 account then see here:
If you are asking if you can use both your current 48 number and the Three number on 48 then you cannot do that.
You can only have one number associated with your 48 account.
If you do port your Three number over to 48 then presumably your Three account will no longer work.
You'd have to ask Three if you can get a new number if you want to continue to use your Three account but port your current Three number over to 48.
Hope this helps.