The global number of smartphone users is expected to reach 2.5 billion by the end of 2015, research showed Monday, as more tech players are releasing low-end models to appeal to wider markets.
Around 34.7 percent of the world's 7.2 billion population estimated for 2015 will use smartphones, an industry tracker Strategy Analytics's report showed, which had said the number surpassed the 1-billion mark in 2012.