rhomobile - the open mobile framework
U.S. Smartphone Use in 2015 | Pew Research Center's Internet & American Life Project
Responsive Design Testing across Mobile and Desktop Browsers - iOS, Android, OS X, Windows
Study: Non-Mobile-Friendly Sites Disappearing From Top Google Results
The Rise of Phone Reading - WSJ
Detect Mobile Browsers - Open source mobile phone detection
No, Americans do not install an average of zero apps per month | TUNE