Potential stupid question re: Galaxy Tab - phone functions in UK?

Oct 2, 2010
I have a potentially stupid question. :eek:

Does the Galaxy Tablet have phone functions in the UK but not in the US? And if this is true, is there an unlocked version of the Galaxy Tablet that could be used as a phone (sort of like the N1)?

And if there is an unlocked version - such as the ones I've seen advertised by some retailers (such as GUM Mobile) what would be stopping a consumer from buying a UK model and then using it here?