• recommended
      • Kjeldskov, J. (2013). Mobile computing. The Encyclopedia of Human-Computer Interaction, 2nd Ed. Chicago (site)
      • Brain, Tyson & Layton. (2013). How cell phones work. (site)
    • optional
      • Lewis, James R.; Commarford, Patrick M.; Kennedy, Peter J.; Sadowski, Wallace J. 2008. Handheld Electronic Devices. Reviews of Human Factors and Ergonomics, 4, 105-148. (ncsu) (open)
      • Schiesser, Tim. (2012) Guide to smartphone hardware (1/7): Processors. (site)
      • Steve Litchfield's defining the smartphone, part 1, part 2
      • Woyke, E. (2014). Assembling a smartphone. Chapter 4 in The Smartphone: Anatomy of an Industry. The New Press. (ncsu)