What is the use of the "infrared" function of the mobile phone?

1. Mobile phone infrared was first used for point-to-point wireless data transmission. For example, two mobile phones with infrared function can transmit pictures, documents and other information to each other through infrared connection.

2. Mobile phone infrared can realize the function of "universal remote control", and use infrared remote control to control TV, air conditioner and other equipment.

3. Mobile phone infrared is mainly used for automatic control of screen backlight. When making a phone call, people's ears are close to the distance sensor of the mobile phone, the sensor outputs signals, and the backlight is turned off, thus saving unnecessary battery power and prolonging standby time.

Infrared technology is also a wireless communication mode, which can transmit wireless data. Compared with Bluetooth, infrared transmission should not be too far away, and it should be aimed at the direction without obstacles in the middle. Infrared technology is mainly used for short-distance point-to-point linear data transmission with high transmission rate.