Do You Know The Function Of The Black Dot On The Top Of The Smartphone You may have noticed that some smartphones have a small sensor called an IR blaster. This is a device that gives your phone the power to act as a remote control.
In simple words, the phone can be controlled as a remote control with the help of an IR blaster. It has several uses. Before proceeding to that, let’s talk about what an IR blaster is.
The full name of IR is infrared. It is a kind of invisible light, which is used in remote communication. The IR blaster on your phone creates similar infrared light.
A device such as a TV in front of you catches this infrared signal through its receiver. The device then acts based on the received code, such as changing the channel, increasing the volume, or turning the power on and off.
The advantage of the IR blaster is that you can use your phone as a remote. In this case, you don’t need to carry a separate remote. In some apps made for this, you can also find other smart features like timer, and macro.
But the limit of IR signal ie the distance it can reach is less. Therefore, you may need to use the phone as a remote by keeping it close to the device you want to operate. IR signals need a direct line of sight to reach the device’s receiver.
To find out if your mobile has an IR blaster, look on the outside of its box. It usually contains a description of all the features of the phone. The IR blaster is usually placed as a small black dot on the top of the phone or near the camera.