The table illustrates how the usage of four different mobile phone features changed among owners in Vietman across the spacific years 2005, 2008, and 2010.Overall, making calls remainded the most popular activity throughout the period, despite a slight decline by the final year.While the proportion pf users taking photos saw a steady increase, the popularity of text messaging and audio recording expereienced a notable downword teand.
In 2005, making call was universal activity among mobile phone owners. This figure remained stable in 2008 before dipping slightly to 97% in 2010. In contrast, the persentage of people using their phones to take photo started at 65% in 2005 and rose consistently, reaching 77% by the end of the period, making it the feature to show growth.
Conversely, text messaging and audio recording both saw diclines in usage. In 2005, 82% of owners sentor received text messages, but this figure fell to 73% in 2008 and drop further to 68% by 2010. Similarly, the porportion of users recording audio decreased from 78% in 2005 to 75% in 2008, followed by a more significant decline to 63% in 2010, which was the lowest recorded perscentage of any feature acress the three years.