How does Apple 7 set the ringtone on the mobile phone?

Apple can set ringtones through itunes software, as follows:

1 First, you need to download an itunes software and update it to the latest version. After downloading, open this itunes software.

Then add the music files that need to be converted to the repository. The operation process is to select the file in the menu bar option of itunes and click Add File to Repository.

Then the music file selection will pop up. Select the music file to add, which can be found under the itunes menu.

4 In the music list, find the file you just added, click the right mouse button to open the menu bar, and select Show Introduction.

5 After entering the display profile, find the tab, then modify the start time, then fill in the start time and check. Click "Confirm" when you are finished. (PS: The length of ringtone cannot be greater than 40 seconds. Please note that if it exceeds 40 seconds, the synchronization will fail. ) just fine.