The cost of calling home

<p>If you’re living thousands of miles from home, how do you keep in touch, especially when your loved ones don’t have reliable internet? </p><p>There’s a growing market across Africa and beyond for apps helping to cut the costs of international calls to older phones. And some operators have much grander ambitions. </p><p>If you'd like to get in touch with the team, our email address is businessdaily@bbc.co.uk</p><p>Presented and produced by Matthew Kenyon</p><p>Business Daily is the home of in-depth audio journalism devoted …