1. The Verge IDC Forecasts 1.16 Billion Smartphones Shipped 2016 http://www.theverge.com/2012/3/29/2910399/idc-smartphone-computer-tablet-sales-2011
2. Napier Lopez 90% of Facebook's Daily Active Users Access it via Mobile http://thenextweb.com/facebook/2016/01/27/90-of-facebooks-daily-and-monthly-active-users-access-it-via-mobile/
3. Bloomberg Facebooks Zuckerberg Targets Mobile Users For Growth http://www.bloomberg.com/news/2012-05-11/facebook-s-zuckerberg-addresses-questions-over-mobile-strategy.html
4. PR Newswire J.D. Power and Associates Reports: Smartphone Battery Life has Become a Significant Drain on Customer Satisfaction and Loyalty http://goo.gl/ENUOE 2016
5. Rachel Metz 2013 Camera Tweaks Should Boost Gadget Battery Life http://www.technologyreview.com/news/515951/camera-tweaks-should-boost-smartphone-battery-life/