How to set the ringtone for iphone5?

2. Open iTuns, select Library-Music, click File-Add File to Library (if there is an existing file, this step is omitted), select a song, right click, select Show Introduction, check Start Time and End Time in the Options tab, and adjust the required paragraph (start time)

3. Select this song, right click and select "Create ACC" version. You will see a new file under this song. Select this new file and right-click "Show in Windows Explorer" to open a new window. When you see a file, change the suffix of this file from "m4a" to "m4r" and confirm, which may prompt that the file cannot be used. Leave it alone and change it. Copy this file to the desktop. At the same time, delete this file from the "database"-"music".

4. Go back to iTuns, select Database-Ringtone, and drag the completed ringtone file into it.

5. Connect the mobile phone to the computer, select "Device", select "Ringtone" (after "Summary", "Information" and "Application", not the one in the database), you can see the completed ringtone files, check all the files, select "Selected Ringtone" and "Synchronize Ringtone", and click "Apply" at the bottom.