Sensors For Mobile Phones  Ambient Light Sensor  Proximity Sensor  GPS Receiver Sensor  Gyroscope Sensor  Barometer Sensor  Accelerometer Sensor  Microphone Sensor  Magnetometer Sensor By Fahmida Ahmed

Ambient Light Sensor: Thermometer is for measuring ambient temperature, there's a thermometer in most smartphone, and some handsets might have more than one. The difference is that they're used to monitor the temperature inside the device and its battery. If a component is detected to be overheating, the system shuts itself down to prevent damage.

Proximity Sensor: The proximity sensor, is comprised of an infrared LED and an IR light detector. It is placed near the earpiece of a phone, when you place the handset up to your ear, the sensor lets the system know that you're most probably in a call and that the screen has to be turned off.

GPS Receiver Sensor: Higher end phones have a built-in barometer, a sensor that can measure atmospheric pressure. Data measured by it is used to determine how high the device is, which in turn results in improved GPS accuracy.

Gyroscope Sensor: The gyroscope is a sensor that can provide orientation information. This particular sensor, Android's Photo Sphere camera feature can tell how much a phone has been rotated and in which direction. Its also used by Google's Sky Map for telling what constellation you're pointing a phone at.

Barometer Sensor Higher quality phones have a barometer, this is a sensor that can measure atmospheric pressure. Data measured by it is used to determine how high the device is above sea level.

Accelerometer Sensor Accelerometer is an device used to measure acceleration forces. Forces that may be static, like the continuous force of gravity, as the case with many mobile devices, dynamic to sense movement or vibrations. Acceleration is the measurement of the change in velocity, or speed divided by time.

Microphone Sensor Microphone is an electric transducer/sensor that converts sound in air into an electrical signal, they are used in many applications such as telephones, hearing aids for concert halls and public events, motion picture production, live and recorded.

Magnetometer Sensor Magnetometer is able to detect magnetic fields, it is one of the sensors that compass applications use to point at the planet's north pole. Apps made to detect metal use this sensor as well.