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• Cell Phone Reviews and Stuff Guide
  
• 3G Newsroom: What is 3G?
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• The Travel Insider: Global Roaming
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Sources

• 3G Newsroom: What is 3G?
  http://www.3gnewsroom.com/html/about_3g/what_is_3g.shtml
• O'Reilly: Unlocking Your Nokia Phone
  http://www.oreillynet.com/pub/wlg/3935
• The Travel Insider: Global Roaming
  http://www.thetravelinsider.info/2002/1101.htm
• The Travel Insider: Dual, Tri, or Quad Band GSM Phone?
  http://www.thetravelinsider.info/roadwarriorcontent/quadbandphones.htm
• The Travel Insider: Unlock Your Cell Phone
  http://www.thetravelinsider.info/roadwarriorcontent/nokiaunlocking.htm