Get a phone with a SIM card (GSM chip). [Note that “GSM” does not translate into GPS. We’re not talking about Global Positioning System here. GSM stands for “Global System for Mobile” Communications — or “SIM” card (“SIM” stands for “Subscriber Identity Module.”)] When you land, you’ll instantly have access to emergency service (the local equivalent to “911”), even with your USA-based chip. But prior to your departure, find a carrier in your destination land that sells “pay as you go” or “top up” or “non-subscriber service” or “PrePaid” GSM chips or SIM cards. These are tons better than the “roaming chips” that we previously recommended. Pay ridiculously low prices for these (for example, $4), buy a ton of cheap minutes, and call to the USA 10 cents/minute. This contrasts radically with USA-based-cell-carrier plans, which typically make you pay at least three times that much. (On one recent trip, between calls and emails, one group member managed to rack up $2000 on his smartphone in just one week. So if you’re going to try to use your existing homeland-based plan, please call customer service before you leave your homeland so you know exactly what you’re going to spend. In my experience, buying a local sim card will always be the best route. What’s more, it gives you a local number so local contacts can easily call you about schedule changes.