According to a study done by the FDIC in 2015, about 25% of US households are underbanked, with about 8% being completely unbanked; according to the World Bank almost two billion people worldwide are still underbanked and access to the traditional banking system is minimal at best; the number is trending down as more fintech companies have arrived on the scene to offer financial products to these segments; these statistics have led a lot of companies to the conclusion that if you offer financial products via mobile devices these numbers will continue to trend downward. Source
