Mobile devices use special mobile operating systems
General vs. Purpose built
General purpose devices are loaded with a Kernel system that can be transformed into a fully usable Operating System
Purpose built is specific towards a single usage such as reading, calculating, tracking, transmitting, etc.
Smartphones
Earliest Smart Phones were something similar to blackberry
2004 started with system such as PDAs that included cellular service
Modern
Provide touch interface
Have APIs for developer to program against and build applications
Usage of Cellular, wifi, and bluetooth radio
Kernel system loaded with specific operating systems such as Andriod, Windows, or iOS
No user replaceable components
Tablets
Similar to smartphones but much larger in size
Mostly rely on Wifi provided services
Rely on touch input for usage
Come with both general and specific purpose design
Virtual Reality Headsets
Provide ability to engage in augmented and virtual reality
Hardware
Screen Technologies
Cameras
Microphones
Digitizers
Global Positioning Systems
LCD Screen
Expensive smartphones use organize light-emitting diode (OLED)
Cameras
Allow for video and pictures
quality various based on device
features like HDR, short burst, filters, and action shots
Microphones
Smart phones contain microphones
Some allow external Microphones
Some software listening in with permissions
Digitizers
Allow for touch commands
Send signals to the OS it’s location on the grid
Allows for hand gestures such as pinch or swiping
Global Positioning System (GPS)
Apps can track progress for things like fitness running
Sharing location with friends or family
Provide turn-by-turn instructions
Locate a lost or stolen device
Internet of Things (IoT)
Devices that are provided data over Radio, Wifi, GPS, or Cellular connection to transmit specific pieces of information back to a server somewhere for data mining purposes.
This can also be as simple as your coffee maker, your security camera, refridgerator, etc.
Digital Devices
amazon, Apple, Google, and Microsoft provide “smart listening” device which can take user audio input and generate useful information from it.