- 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)
- CPUs
- networks
- IO
- Displays
- Keyboards
- Phone keypads at DialABC
- Eatoni's excellent survey of alternative text entry methods
- DTMF/E.161: wikipedia's page
- Multitap: wikipedia's page
- Predictive text
- System for accelerating entry of text by guessing correct word
- Wikipedia's page
- Fastap
- Dpads
- Touchscreens
- Tracking
- Cameras
- A nice comparison of the iPhone camera to other cameras
- Wikipedia's page
- OSs
- Levent-Levi compares iOS, Android and WP7 architectures
- iOs
- Android
- Windows Phone 7
- Blackberry OS