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

The bar chart provided reveals the percentage of four different factors why teenagers used phones in a selected country in Africa from 2016 to 2019.

Overall

,

it is clear that

the

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social networks

was

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were

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the highest part, compared to the least of that of the phone calls every year. Meanwhile, these two factors mentioned above experienced a significant refluctuation.

Furthermore

, The rate of using digital

camera

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showed an upward trend,

whereas

the figure for sending email was downward over

this

period. In 2016, social networks

was

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by far the highest, at a half percentage, which had a slight decline to 48% in 2017,

then

reached

to

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the climax of 56% in the

last

year, almost rising by 6%.

By contrast

, the lowest rate of callings was 10% in the first year, which climbed by 2% in 2017 before it fell to merely 5% in 2019.

However

, there was an increase in using

digital

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camera

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cameras

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, from 15% to 20% over

this

period of four years.

On the contrary

, the proportion of the function of email went down gradually, stood at one quarter in 2016, and

finally

went down to its bottom of 19% in 2019.