Originally Posted by
alcathiax
It's not online. You would need to go to any T-Mobile corporate owned store or at certain retailers like Wal-Mart, Best Buy, Circuit City, or CompUSA to pick up and read their full brochure on their ToGo products as it explains this feature.
I just happen to know this anyways because this past May, I got a free text message on my ToGo phone stating that they now offer international roaming to over 290 countries. Canada and Mexico roaming has been available since summer 2006.
I think you must mean 190 countries. I have an 02 UK SIM which is supposed to be the gold standard in international roaming, and I'm just barely over 200 countries. My list includes Iran, Cuba, and some other places that US sims cannot go. ATT contract roamers have 195 countries that they can roam in.
Now admittedly, sometimes there is a dispute about what is a country (Palestine, the Holy Sea, Kosovo, Taiwan, Hong Kong, etc), but the number sounds a tad high for prepaid.