Smart phones are Internet-enabled phones that allow users to multitask. They have positively impacted productivity, communication, social engagement, and education. About 80% of married couples in the U.S. in 2009 met through social media like Facebook, showing how smartphones have enhanced social connections. Research from the University of Wollongong found that smartphones allow students to complete their work digitally and teachers to incorporate new technologies into their lessons. Statistics demonstrate increasing global demand for smartphones from 2008 to 2013 as they make communication and work more convenient.