We are traveling to Tanzania in the fall. We will be staying with friends and want to be able to connect by phone while we are there. We both have Moto G4 phones. How do we manage that? I think we need to get a sim card at the airport to use local phone networks. We will spend part of our trip in hotels and areas with internet, but while on safari and such, we need to stay in contact with local folks. We will wait for internet to call home.