Welcome to the proceedings for Mobile Development 2016 (Mobile! 2016) workshop, which was co-located with SPLASH 2016. This workshop combines two (each previously 3-years-running) SPLASH workshops: MobileDeLi (Mobile Development Lifecycle) and PROMOTO (Programming for Mobile and Touch). This first international Mobile! workshop took place in Amsterdam, Netherlands on October 31, 2016. The main focus of the Mobile! workshop is on research intended to improve software engineering for mobile devices, over the entire software development lifecycle.