Flyertalkers, thank you all very much.

Under Settings\ General\ About \
then scroll down to 'Wi-fi Address' there is an 'address' similar to the '01:FE:AC:4C:5F:11' one that Billy Delta 3MM mentions above.

So this implies I can now call up the ibahn customer service with this id and will be able to connect.

Has anyone ever had the concierge or the lounge agent call up the ibhan service centre on your behalf?