How does Xiaomi's ringtone reach the new mobile phone?

Using Bluetooth to transmit ringtone source files, the specific steps are as follows:

1. First connect the Bluetooth of two mobile phones, open the mobile phone to find the settings, click Open, find the Bluetooth option in the settings and click Enter.

2. In the Bluetooth open settings, click Bluetooth open, and the Bluetooth open detection switch will be turned on at the same time.

3. Turn on the Bluetooth of the other mobile phone. After turning on Bluetooth in pairing mode, click Refresh in Bluetooth settings. After a while, there will be unpaired Bluetooth.

4. Click on the Bluetooth to be paired after Bluetooth appears, and it will be automatically paired.

5. After successful pairing, it will show that Bluetooth is connected.

6. Find the source file of the ringtone in the file management, and then press Select Send to send it with Bluetooth.