Mobile phones and internet devices have become indispensable parts of our daily lives nowadays.

Forbes recently released the 2015 list of the world's largest telecom companies. Rankings are assigned on the basis of a composite score that measures sales, profits, assets and market value.

Here are 2015's top 10 largest telecom companies in the world, as ranked by Forbes Magazine.

10 China Telecom

Country: China

Sales: $52.7 billion

Profits: $2.9 billion

Assets: $90.5 billion

Market value: $53.9 billion

View of an office building of China Telecom in Nanjing, east China's Jiangsu province, on April 8, 2015.[Photo/IC]