The provided bar chart compares how the global revenue of five leading phone brands varied in different years: 2009, 2011, and 2013, measured in millions of dollars. Overall, the figures for Samsung and Apple experienced upward trends, while there were significant declines in those of LG and Nokia. In addition, in 2009, the figure for Nokia was the highest in comparison, but it was surpassed by that of Samsung in 2013. Samsung and Nokia recorded the largest numbers in sales throughout the period.
Among brands having increasing patterns, Samsung demonstrated the most substantial growth, starting at over $250 million in 2009, then surging to a remarkable $450 million in 2013, and exceeding all other rates. Likewise, the number for Apple began with the lowest figure at only around $48 million, compared to other revenues. However, after the four-year period, its sales climbed dramatically to exactly $150 million, becoming the third-highest figure at the end of the period.
Regarding the remaining categories, Nokia, LG, and ZTE showed noticeably downward trends. Despite having the top figure in 2009, the sales volumes of Nokia underwent a drastic downturn, from above $400 million to exactly $250 million in 2013. Similarly, those of LG decreased from just under $400 million to only about $75 million. The global revenue of ZTE, nevertheless, declined slightly to just over $50 million and remained nearly unchanged by 2013.