The chart shows the results of surveys in one African country asking teenagers the main reasons for using their phones between 2016 and 2019.

Question

The four pie charts compare the results of surveys conducted in one African nation between 2016 and 2019 to ask teens about the main reasons they use their phones.

  Overall, the amount of using phones for social networks accounted for the largest percentage of all four years (2016, 2017, 2018 and 2019). By contrast, the figure for phone calls made up the smallest proportion.

  In 2016,  about half of all teens used their phones for social networking. This number decreased slightly to 48% in 2017 but increased continuously for the next two years and reached a peak of 56% in 2019. Phone usage for email had progressively declined over the four-year period, from 25% in 2016 to only 15% in 2019.

  In 2016 and 2017, the number of phone used for photography remained gradually at 15%. This percentage began to rise in the last two years of the period and was highest in 2019, at 20%. Whereas, phone use for calling fluctuated continuously in all four years, with a slight increase in the first two years but declined sharply in 2018 and 2019, to only 5% in 2019.