The chart shows the results of surveys in one African country asking teenagers the main reasons for using their phones between 2016 and 2019. Summarise the information by selecting and reporting the main features, and make comparisons where...

The pie charts portray the percentage of teenagers' four main purposes of using smart phone in a spetacular country in Africa, observed from 2016 to 2019. Overall, social networking is the most popular precursor of utilizing phone, whereas phone calls is the least favorite. Another noticeable point is that there is a slight drop of the share of email.
In 2016, social networking accounted for half of the total usage and increased to 56%, despite a slight decrease of 2% in 2017. Similarly, there was a negligible growth in the proportion of digital camera, remaining 15% in the first two years and surging by 5% in 2019,
Regarding to the rest of the reasons, email was second-ranked in 2017 at 25% and witnessed a decline of 6% in 2019, this number also being surpass by digital camera to become the third place in the list. Phone call experienced a fluctuation over the four recorded years, rising at 13% in 2017 and then plummeting at 5% in 2019.