They really need that #$%$ in the parts of the world that we are talking about, lol. You better teach them how to catch food and farm before trying to sell phone service there. Those parts of the world are almost 200 years behind us in technology, industry, and socio-economic advancement.
You don't think all those starving Ethiopians need cell phones for texting their homies? Or need smart phones with a language conversion app from Swahili to Watussi? Geez man, you are going to miss the boat on all the money to be made there. An opportunity there might bring a return of almost -$1.37 for every $1.00 invested.