Top Common Sensors in Smartphone


In the present era, the technology has spread its wings to the highest level. With the day today invention of technology towards the digital world would acquire the smartphone market. These days people change their smartphone frequently due to the everyday changes upgradations in the smartphone industry. As we all know, the major specifications in the Android or Windows phone like RAM, internal storage, camera section and processor are specific and limited and hence the user easily understand these points. But one of the major problem that arises at the time of purchasing the perfect smartphone is the lack of knowledge about the sensors, which plays a key role in the conversion of a normal phone into smart one. The customers get in trouble with the certain questions like, What are the different type of sensors which are used in the latest smartphones? What is accelerometer sensor, Gyroscope, fingerprint sensor etc? For simplifying these type of questions, we have provided all the necessary information for the same in the following blog post answering your queries.

1) Accelerometer Sensor

Accelerometer Sensor in Smartphone

It is the well-known sensor in the smartphone. The accelerometer is used to sense the changes in the orientation of smartphone with respect to the viewing angle of the operator. The most important key factor of this sensor is that it senses the change in orientation by 3D (X, Y, Z axis) measurement of the acceleration of the device. For example, the camera mode changes the orientation of the device from portrait to landscape or landscape to portrait mode as we change the orientation of the smartphone. This all happens due to the presence of accelerometer sensor placed inside the smartphone.

This sensor is used by the applications to identify the orientation of the device and its movements, allowing features like shaking the phone to change music.

2) Digital Compass

Digital Compass

Compass is a very common name, which is used in day to day life. As, we all know, the compass is used to find the accurate direction with respect to the north-south pole of the earth by use of magnetism.

For the functionality of Digital Compass in the smartphone, it is usually based on another sensor called as Magnetometer. It provides smartphone a simple orientation in relation to the earth’s magnetic field that further helps the phone to find the direction in the map/navigation apps.

3) Gyroscope Sensor

Gyroscope Sensor

This is the sensor which is used to maintain and control the position, level or orientation based on the principle of angular momentum. It works with an Accelerometer to detect the rotation of phone and features like tilting of phone to play racing games enhances the overall gaming experience.

4) Back Illuminated Sensor

Back illuminated Sensor in Camera

This is the one sensor which is placed in every camera phone. It is a type of digital image sensor which changes or increases the intensity of light while capturing a photograph. Sony is the first company to implement this technology in 2009.

These type of sensor serves the recently developed smartphones in many areas to convert our conventional phone into smart one. Some of those areas are Quick Response (QR) Code, Data Encryption etc.

5) Ambient Light Sensor

Ambient Light Sensor

This sensor is used optimize the light of the screen when it strikes to normal light with different intensities. The functionality area of the ambient light sensor is to adjust the display’s brightness, which at the end saves the battery power and life too.

The ambient light sensor works on the principle of “superposition”. It contains photodiodes which are sensitive to the different spectrum of lights.

6)  GPS sensor

GPS Sensor

A GPS navigation sensor is a sensor that accurately calculates geographical location by receiving information from GPS satellites. Initially, it was used by the United States military, but now widely used in the latest smartphones.

As we know that the Global Positioning System (GPS) is a satellite-based navigation system made up of a network of a minimum of 24 satellite as the satellite data is free and works anywhere in the world. It’s noteworthy that the GPS signal is very weak when they arrive at the Earth’s surface so to make them usable for the users GPS sensors are used which by analytical processing provide us the exact and required data.

7) Proximity sensors

Proximity Sensor in Mobile

The proximity sensors in the smartphone works on the nearness of any object to the smartphone.  In most of the smartphone, the proximity sensor is at the top nearby the front-facing camera. With the help of proximity sensors smartphones detect the distance of any object near the display of the smartphone and if that object is much close to the display then it shuts off the display to save power and obviate unnecessary touch input.

8) NFC sensors

NFC Sensor

The Near field communication (NFC) sensor is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (2 inches) of each other. The technology is simple. It’s a short-range, low power wireless link evolved from the radio-frequency identification (RFID) tech that can transfer small amounts of data between two devices held a few centimeters from each other.

9) Fingerprint Sensor

Fingerprint Sensor

Fingerprint Sensors is  an automated method of verifying a match between two human fingerprints. Fingerprints are one of many forms of biometrics used to identify individuals and verify their identity. This technology is nowadays being used very frequently by Smartphone makers to provide better privacy and security system in the handset. The Finger Print Sensor is an optical sensor that detects fingerprint and does verification with the help of high-powered DSP chip AS601 that does the image rendering, calculation, feature-finding, and searching.

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