How to set the ringtone of iPhone4S?

1. Open itunes, select File in the menu bar-Add the file to the library, select the song to ring, and then click Open.

This song will appear in the music library. Right-click the song and choose Show Info.

Select the option and fill in the start time and stop time (within 40 seconds). -"Okay"

3. Right-click the song again and select "Create ACC Version". A file with the same file name but less than 40 seconds will appear.

4. Right-click the newly created song, select "Display in windows Explorer", change the format of "m4a" to "m4r" (right-click directly-rename and modify the suffix), and select "Yes" in the pop-up window.

Ps: If you can't see "m4a" after the file name, select "Folder Options" in "Tools" in the menu bar of the folder and select "View". In Advanced Settings, uncheck "Hide extensions of known files" and select "OK".

5. Open Preferences in the Edit menu bar of itunes, put a check in front of ringtone in Common Sources, and then click OK.

6. You can see the "ringtone" in the "database". Turn on "ringtone" and you can see whether your file has been converted to ringtone. (If you can't find it, you can add it manually: "File"-"Add File to Database"-Find the folder where the ringtone in m4r format has just been stored, and then select it.

7. Then open "iphone" in Devices, select Ringtones, check the item "Synchronize Ringtones", select "All Ringtones" or "Selected Ringtones", and then select "Synchronization".

8. After the ringtone is successfully synchronized, the ringtone will appear in the settings-sound-ringtone-custom of the mobile phone.

To use this ringtone, simply select.