Global data usage has surpassed voice calls as the primary type of mobile network traffic. Spending on data has tripled in the past two years while voice spending declines. Texting and social media have replaced phone calls as the main form of mobile communication for catching up with friends and coordinating events. Today's mobile devices have evolved far beyond simple communication tools - they now incorporate cameras, apps, GPS, and act as learning aids for children. It is expected that by 2015, more people will access the Internet via mobile than computer.