The graduation thesis "Trends in mobile phones development" is focusing principally on detailed analysis of mobile phone market on a global scale. The aim of this thesis is to elaborate comprehensive analysis of mobile phone market oriented on phones with operating systems (smartphones). The analysis is drawn primarily from the perspective of the key players in the market and comparison of these manufactures. After the descriptive part, where is introduced market as a whole, market segmentation by volume and value, this section focuses on segmentation of the global market by key players. This descriptive part is completed by market segmentation according to the amount of mobile phones sold by key players. Second analysis is segmented by ope...