The pie charts given repersents the information related to the phone usage among the teenagers from an survey conducted in one of a African county between 2016 and 2019. The measurement unit is percentage.
Overall, as the reach of internet increased enormously, usage of social media platform also increased in the same manner. Through the year from 2016 to 2019 a steady rasie can bve seen in the social media activity. On the contrary, if we look into the ideal purpose for which phones were discovered on the first place i. e. phone calls had been decreased over the same tenure.
To begin with, lets look into the development of social media activity. First of all, in year 2016, social networks was a reason for 50% of teenager to use the cellular devices. However, slight dip can be observed in the year 2017 as percentage drop by 2%. Adding on, the rise of social media did not stop there as usage increased in the year 2018 by becoming 21% and 56% in 2019.
Furthermore, lets check the other reasons where phones were least used. Primarily, phone were discovered so that people could communicate quickly with each other by mean of phone calls. To continue, phone calls usage among teenager decreased over the time as 13% of usage in year 2017 was the best performance. Like phone calls, Emails had a same fate as usage of email decrease at steady rate from 2016 to 2019. In 2016, email usage was on 25 % and it drop to 19 % in 2019. 
The pie charts  
given
  repersents
 the information related to the  
phone
  usage
 among the  
teenagers
 from  
an
 survey conducted in one of  
a
 African county between 2016 and 2019. The measurement unit is percentage. 
Overall
, as the reach of internet increased  
enormously
,  
usage
 of  
social
  media
 platform  
also
 increased in the same manner. Through the  
year
 from 2016 to 2019 a steady  
rasie
 can  
bve
  seen
 in the  
social
  media
 activity.  
On the contrary
, if we look into the ideal purpose for which  
phones
  were discovered
 on the  
first
 place  
i. e.
  phone
  calls
 had  
been decreased
 over the same tenure.
To  
begin
 with,  
lets
 look into the development of  
social
  media
 activity.  
First of all
, in  
year
 2016,  
social
 networks was a reason for 50% of  
teenager
 to  
use
 the cellular devices.  
However
, slight dip can  
be observed
 in the  
year
 2017 as percentage drop by 2%. Adding on, the rise of  
social
  media
 did not  
stop
 there as  
usage
 increased in the  
year
 2018 by becoming 21% and 56% in 2019. 
Furthermore
,  
lets
  check
 the other reasons where  
phones
 were least  
used
.  
Primarily
,  
phone
  were discovered
  so
 that  
people
 could communicate  
quickly
 with each other by mean of  
phone
  calls
. To continue,  
phone
  calls
  usage
 among  
teenager
 decreased over the time as 13% of  
usage
 in  
year
 2017 was the best performance. Like  
phone
  calls
, Emails had a same fate as  
usage
 of email decrease at steady rate from 2016 to 2019. In 2016, email  
usage
 was on 25 % and it  
drop
 to 19 % in 2019.