Tech Gyan: How many sensors are there in a smartphone and what is their function? Know in detail
Whether it is giving automatic brightness to the screen, counting steps, rotating the screen by turning the phone or features like face unlock - all this is not possible without sensors. But have you ever wondered how many sensors are there in a smartphone and how do they work? Let's know in detail.
In today's era, smartphone is not just a calling device, but it has become a smart technology hub. Sensors play an important role in the advanced technology of smartphones. These are small electronic devices that make our phones smarter, faster and user-friendly.
Whether it is giving automatic brightness to the screen, counting steps, rotating the screen by turning the phone or features like face unlock - all this is not possible without sensors. But have you ever wondered how many sensors are there in a smartphone and how do they work? Let's know in detail.
1. Accelerometer
- What does it do?
- This sensor detects the movement and tilt of the phone.
- Where is it used?
- When you rotate the phone from landscape to portrait mode, the screen orientation changes. It is also used for step counting in fitness apps.
2. Gyroscope
- What does it do?
- This is a more advanced sensor than the accelerometer, which measures the phone's rotation speed in three directions (3D).
- Where is it used?
- It plays an important role in mobile gaming (games like PUBG, BGMI, Asphalt). It is used in video stabilization (OIS – Optical Image Stabilization).
3. Magnetometer
- What does it do?
- This sensor detects the earth's magnetic field and helps in showing direction like a compass.
- Where is it used?
- To show directions in GPS and map apps (Google Maps, Apple Maps). It is also used in metal detection apps.
4. Proximity Sensor
- What does it do?
- This sensor detects the proximity of an object or person in front of the phone.
- Where is it used?
- When you bring the phone to your ear while making a call, the screen automatically turns off to prevent touching. In pocket mode, the phone screen locks automatically.
5. Ambient Light Sensor
- What does it do?
- It measures the light level around the phone and automatically adjusts the screen brightness.
- Where is it used?
- Auto brightness feature, which saves battery. For improved indoor and outdoor visibility.
6. Barometer
- What does it do?
- It helps in measuring atmospheric pressure.
- Where is it used?
- To measure altitude in GPS. To provide weather related information.
7. Fingerprint Sensor
- What does it do?
- It provides security by doing biometric scanning of your fingers.
- Where is it used?
- To unlock the phone. For payment authentication (UPI, banking apps).