The bar shows the amount of global mobile phone sales by brand, including Samsung, Apple, Nokia, LG, and ZTE in three separate years. It can be seen that sales of global mobile phones went up in three out of the five brands from 2009-2013 while the other product was drop. Overall, Nokia is a product that has the highest unit of sold compared to all products. In 2009, Nokia led the sale of its products at the top, they successfully sold more than 400 million products. By 2011, however, Samsung experienced the largest sales increase in its products, while Apple was ranked second in increasing sales of its products. There is also ZTE that managed to increase sales of its products in 2011. In 2013, Samsung managed to lead more success in selling its products, but it can be seen in the bar above that a stable increase occurred in ZTE products where they only increased slightly compared to the previous year. In 2009, apple was the lowest on selling their product, they just s...