The ringtone of IPhone 6s was originally set to 40 seconds, but it played for more than 20 seconds when the call came in, and then it started again.

1 First, open iTunes2 on the computer, click the music on the left side of the interface, and then open the file in the upper left corner-select Add File to Library 3, and select the music in mp3 format you want to add. After adding, the file will be displayed in the music interface; 5 Right-click the music file, select "Show Introduction" 6 Select "Options" in the pop-up window, set the start time and end time in the options bar according to your own preferences, and then click "OK"; (The duration of incoming call ringtone for iPhone is limited to 40 seconds, and the duration of short message ringtone is limited to 25 seconds. iOS5 and above systems only support short message ringtones in m4r); Format) 7 After returning to the music interface just now, right-click the music file and select "Create AAC" version 8. At this time, a music name with the same name was added at the bottom of the file just now. 9 Right-click the newly generated music name and select Display in Windows Explorer 10 to save the music file. Some friends' computers don't display file name suffixes. First, open the tool options at the top of the folder interface-Open Folder Options-Select View-Find "Hide extensions of known file types" and uncheck it-click Apply and confirm) 1 1 Copy the renamed file. Click "ringtone" on the top left of iTunes to open the "ringtone" page (some friends have no "ringtone" option in iTunes by default. Add method: Go to Edit-Select Preferences-Select General-Check Ringtones in the Source area at the top of the iTunes interface) 12 is in the ringtone list on the right. After synchronization, we can set the ringtone of the mobile phone to the music we just made on the mobile phone. Or pp assistant can download ringtone import directly.