Huge increase: With populations in Asia rising, the number, which stood at 4.8 billion a year ago, should mushroom to 5.7 billion by 2020.
The number of mobile phone users globally will surpass five billion by the middle of this year, according to a study released by GSMA, the association of mobile operators.
With populations in Asia, and notably India, on the rise, the number, which stood at 4.8 billion a year ago, should mushroom to 5.7 billion, or three quarters of the world's population, by 2020.
