Further to the triband/quadband discussion, here's a question.
One of our guys travels extensively in South America and South Africa, with other trips in Europe, all over North America, and probably Asia and Australia soon.
I expect the best phone choice will be a quadband; for these international trips, does it make most sense to buy a prepaid SIM card when you arrive in the desitination country? Is this a simple procedure? Anyone out there with words of wisdom?