I  frequently need to call outside the United States while traveling and this leads to problems. Until now I either had to wait until I could find a land line and use a pay card, use VOIP (if I could find a functioning hotspot) or pay T-Mobiles extortionate international telephone rates (no better or worse than any other cell carrier). By using mobivox www.mobivox.com you can call anywhere in the world for outrageously low prices from your cell phone or landline, and if you can persuade you friend to join too then the call will be entirely free. Their system recognizes the phone you are calling from greets you by name and asks who you would like to call. Give it a try.