Would you be happy to view ads in exchange for free data? Well that's the business proposition from start-up Sliide which is set to launch next month in Nigeria.
The British firm has created an app that turns your smartphone's lock screen into a place with curated content, as well as advertising.
With more people coming online in Africa, Sliide decided that Nigeria would be its first market given the emerging number of consumers able to afford smartphones.
"Emerging markets are going through the roof in terms of ad revenue. The typical ads per click in Nigeria was one cent. It's now between five and seven cents," Frankie Kearney, co-founder of Sliide, told CNBC in an interview at Mobile World Congress (MWC) in Barcelona on Wednesday.