First get a quad-band850/900/1800/1900 phone from a GSM carrier
get it UN locked, then compare ATT/cingular and T-mobile coverage
check out the Treo 600 or 650 and the new quad band blackberrys
Remember it all about the frequesncy but more importantly the roaming agreements carriers have with the in-country carriers
watch out for the per kb data charges when going overseas
let me know
I am looking for a cell phone that I can also use for PDA (contacts, calendar, messaging, etc.) but it needs to work around the world - Canada, Europe, Asia, South America. Ideally, I'd like to stay with AT&T or Verizon.
I've heard mixed reviewed of smartphones, but that would seem ideal. Any suggestions?