By 2013, mobile phones will overtake PCs as the most common web access device worldwide. There will be more than 1.82 billion smartphones and enhanced phones in use compared to 1.78 billion PCs. More than 200 million Facebook users currently access the site through mobile devices and are twice as active as non-mobile users. China is projected to have 1.3 billion mobile subscribers and 957 million mobile internet users by 2014.