I went to Canada for 1 week. With me I bought my g1 phone. I have unlimited data plan, but I didnt think twice about roaming charge. It is 10 dollars per MB I think. Once in Montreal, my phone locked me you. I just cannot log back in with my gmail account - I need to do a "factory reset", as mentionned in the technical sections of tmobile site. One dissadvantage of the "factory reset" is that you have to redownload all your applications. I downloaded the applications back. I called T-Mobile, explained the... read full review »