Bluetooth function:
1, transfer file
It is usually 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.
Step 2 send 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-button change" function. If you just want to transfer the contents of the address book, you can operate it through Bluetooth.
Extended information 1. Main article: Bluetooth configuration file
To use Bluetooth wireless technology, devices must be able to interpret some Bluetooth configuration files, which 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.
Second, the application list
Wireless control and communication between mobile phone and hands-free earphone. This is one of the early popular applications.
Wireless control and communication between mobile phone and car audio system compatible with Bluetooth.
Provide wireless control and communication for devices such as tablets and speakers with iOS or Android.
References:
Baidu Encyclopedia: Bluetooth