What is Bluetooth? What's the use?

Bluetooth is a short-range wireless communication technology, which can realize data exchange between fixed devices and mobile devices. Generally, BR/EDR Bluetooth before Bluetooth 3.0 is called traditional Bluetooth, and Le Bluetooth under Bluetooth 4.0 specification is called low-power Bluetooth. Bluetooth function: transfer pictures and files. Do not need to be restricted by the network, only suitable for a small number of files and pictures.

Bluetooth is a short-range wireless communication technology, which can realize data exchange between fixed devices and mobile devices. Generally, BR/EDR Bluetooth before Bluetooth 3.0 is called traditional Bluetooth, and Le Bluetooth under Bluetooth 4.0 specification is called low-power Bluetooth.

Bluetooth function: 1, file transfer: generally used to transfer pictures and files. The biggest advantage is that it is not restricted by the network, but it is only suitable for a small number of files and pictures. After all, it is still very troublesome to receive one by one.

2. Transfer the address book: When changing a mobile phone, if there is not much important content on the mobile phone, there is no need to use the "one-click phone change" function. If you just want to transfer the contents of the address book, you can operate it through Bluetooth.

Bluetooth profile: To use Bluetooth wireless technology, devices must be able to explain some bluetooth profile. These specifications define possible applications and specify the general behavior of communication between Bluetooth devices. These profiles include initial settings for communication parameters and controls. The configuration file can save the time of resending parameters before the bidirectional link takes effect.