Specifically, Rio. My family (5 total) mostly has iPhones (4 &5) with Sprint, and what we need is for one of those phones to be able to call voice locally in Rio, and the other phones only need to text messages to each other in case we get separated. Do I need any additional hardware? OR Is a call to Sprint before we leave all I need? and finally, is it helpful or needed to try to get a separate local number in Brazil? Thanks for any help with these questions.

Hi, my name is Debora, I am brazilian, from Belo Horizone. y husband is american, and everytime his mother come to visit us, she brings her international phone. 2 things you need to know, 1st only international phone would work in here, so you should call your company, 2nd the calls are very expansive, maybe you could get whatssap for you and your family. Well, have fun here. my e-mail is [email protected] if you need any help here, let me know.