Here are a couple great articles to back you up:
Trailblazing back in 2005, Swan, van’t Hooft & Kractoski (2005) studied the Uses and Effects of Mobile Computing Devices in K–8 Classrooms.
In addition, Engel & Green’s (2011) Cell Phones in the Classroom: Are we Dialing up Disaster? is a must read.
Now go out and do geekygoodness!!!