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The given chart compares global telephone sales of five different brands from 2009 to 2013. Overall, it is clearly that people had a tendency to use mobile phones that were produced from Samsung. Anh this is opposed to ZTE, the least favourite brand over the course of 4 years.

On the one hand, Samsung and Nokia ranked the first and the second chart for having the biggest number of mobile phones sold. Samsung increased this figure through 4 years, from over 200 in 2009 to 450 mobile phones sold in 2013. However, Nokia witnessed a downward trend, showing the decline from almost 450 mobile phones in 2009 to only a half of the revenue of the beginning of the period in 2013.

On the other hand, the three remaining brands sold out only under 150 phones. Brand Apple increased the record over 4 years, with the figure tripled up to the number of 150. In the opposite, LG slightly dropped their sales of mobile phones by 50 sales in 4 years. Although ZTE ranked the bottom with the modest figure, this brand still rose only around 50 sales from 2009 to 2013.