But there is a bright spot in the expansion of financial services in the developing world: the recent introduction of “mobile money.” The greatest success has been in Sub-Saharan Africa, where 16 percent of adults—and 31 percent of those with a formal account—report having used a mobile phone in the past 12 months to pay bills or send or receive money. The purposes and benefits of account use vary widely. Worldwide, 26 percent of account holders use their account to receive money or payments from the gov- ernment. This practice is most common in high-income economies and relatively rare in South.