is it possible to have two sim cards with the same number? So I can use one into my car telephone system and one with my mobile phone?
This is not possible on giffgaff
If you are looking after 2 accounts,
dare I suggest using 2 browsers,
to keep the username and passwords separate?
It'll save grief over a possible mix-up later
Have different avatars/icons to help tell the difference
All the best H4C