According to the Digital Skills Observatory, a research group funded by the Bill and Melinda Gates Foundation and run by Mozilla, smartphone usage in Kenya seems to increase the amount of time people spend gambling.

One third of respondents in seven regions of Kenya reported using their phones for betting. In some cases, being able to use gambling apps and sites was the primary reason for getting a smartphone.

Kenya is home to the third largest gambling market on the continent after South Africa and Nigeria. The explosion of the industry over the last decade has boosted cyber cafes, online betting platforms, makeshift casinos, and imports of inexpensive slot machines from China. Kenya’s betting revenues are expected to reach 5.1 billion Kenyan shillings by 2020, a 142% rise from 2014.

Other African countries home to large populations of unemployed youth are also seeing an increase in gambling, especially sports betting. In Uganda, local communities have tried to ban it.

SportPesa, a Kenyan online sports betting platform, was the second most-visited website by smartphone users polled in the project—after Google and ahead of Facebook. The survey found that three other gambling sites were among the 20 most visited URLs by smartphone users.