Can i unlock american phones to suit australia's sim cards?

i would really love to know, because the phones they have in the united states are way better than what we have in aus.

Can i unlock american phones to suit australia's sim cards?
you have to ask some phone shops in your country.


I bought a phone from the US too and now its working tremendously....... oh, i'm in Thailand by the way.
Reply:Yes, you can unlock almost any cell phone, but the phone must be GSM 900/1800 frequencies capable for Australia.