I have a Moto E (2nd generation) phone and plan to travel to South America. I assume I will be able to find some WIFI hot spots (with data and with no data). Can I make phone calls to the U.S. ? Can I access email accounts back in the U.S. ?
Your phone should work via WiFi anywhere in the world. As for GPS it should only work over WiFi also. But you will have no carrier locally in South America.
Other in RW Community have done it.
On open WiFi you will be able to make calls and send texts to US and Canadian numbers, along with checking email and web surfing