The story of M-PESA that most of us know usually goes as follows. The two big players,
Vodafone and
Safaricom, got together to develop and launch M-PESA. They spent months testing, adjusting, and re-testing the system before it went live. The result-an immensely popular service offering that has radically changed both the financial and telecommunications sectors in developing countries and spawned a lucrative industry for mobile money. This is not exactly how the story went............
http://www.cgap.org/blog/what-you-don’t-know-about-m-pesa