The graph below shows the percentage of mobile phone owners using various mobile phone features in Vietnam in the years 2005, 2008, and 2010.

The given table illustrates the proportion of four different functions of a smartphone used by customers in Vietnam in the three years, namely 2005, 2008 and 2010.

Overall

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, calling was the most popular feature throughout the time whilst the figure for taking photographs increased in the period. The most notable point is that the proportion of users who called from their mobile phones was nearly 100% on all dates.

Although

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there was a slight decline of 3% in 2010, it still had the highest figure among the listed features.

Moreover

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, taking pictures experienced a growth in its percentage throughout the 5 years

while

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the remaining two declined. In detail, the percentage of those who enjoyed the photograph-taking grew from 65% to 77%.

In contrast

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, the proportion of the owners who sent and received texts decreased from 82% to 73% and to 77%,

whereas

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that of those who recorded audio

also

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dropped from 78% to 75% and to 63% from 2005 to 2008, and to 2010.