Term	Function	Commercial Application Examples
Accelerometer & Gyroscope	Determining the speed of movement in space as well as speed of rotation of the device.	Pedometer application. Activity tracking (e.g., Google Fit)
Antenna	Detecting nearby cellular towers and relaying the signal to the broadband processor for voice/SMS/data communication.	Contextual messages when entering a certain area (e.g., text messages received when roaming in another country)
Bluetooth	Detecting and communicating with other Bluetooth-enabled devices.	Wireless audio. Transmission of files between phones.
Global Positioning System (GPS)	Receiving information of four or more GPS satellites to calculate the position of the device.	Car navigation (e.g., Google Maps Navigation)
Light sensor	Determining the amount of light reaching the device.	Automatic screen brightness adjustment.
Microphone	Capturing external sounds onto the device to for recording, processing, or transmission [96]	Audio recorder. Phone calls.
Proximity sensor	Detecting the proximity between the front of the phone and any obstacle, such as a human face.	Turning off the phone screen during calls.