Purchasing a 2nd hand iPhone, question about sim card?

comeon

Thinking of buying a second hand iPhone 3g/3gs from a reputable irish website.

I currently have a cheap android with Vodafone.

Excuse my naivety but when the iPhone's are advertised saying 'unlocked to any network' it means it will accept my Vodafone sim, right?

Or if another says Vodafone only, it will accept my android sim, right?

Its just ive a vague memory of swapping sim's wit friends on the same network/make of phone, and not being allowed to use the phone to its full capacity, which is a mistake u don't want to make with a iPhone, I mean who buys it really for calling and txtin!

Thank you.

midgej

If it's unlocked it should work with a sim from any network. You probably know this anyway, but if you're getting an iPhone 4 you'll need to change your sim for a micro-sim (it's much smaller than the regular one). You can usually change them free of charge with your network provider.