A great portion of Africa people do not have access to banking services. Because of the wild landscape and many remote villages, it is not easy for someone to go to the Bank. Bitcoin, does not need bank infrastructure, so it can be easily used wherever there is internet connectivity. More over bitcoin make payments and wallets available, wherever there is an internet connection.
Lol. Do you think that in remote villages have Internet? I am sure that there is not even electricity. Bitcoin is a digital technology and it is not available in countries with underdeveloped infrastructure. I do not believe that bitcoin will ever be used by people who do not know how to read and write. It's impossible.