Hello, I live in the US and have been using T Mobile for years now--I'm out of contract, and was able to replace a broken phone with a new one, and just simply put in my old SIM card. I still continue to use T Mobile. Now, if, say, T Mobile wins the rights to iPhone in Europe (where apaprently they don't have LOCKED phones) and I don't want to swtich to Cingular/AT&T, can I just purchase a European iPhone and then put my US-based T Mobile SIM card in it??? Would that work??? Thanks in advance for any informative replies as how these things work..