Ask for several Apple mobile phone notifications and SMS prompt tones mp3.

You can open itunes first and select File-Add File to Library in the menu bar.

Then select the song to ring, click "Open" and the song will appear in "Music" in "Music Library". Right-click the song and select "Show Info".

Select the option and fill in the start time and stop time (within 40 seconds). -OK right-click the song and select Create ACC Version. For files with the same file name but less than 40 seconds, right-click the newly created song, select Show in windows Explorer, change the format of m4a to m4r, and then click it.

Last check: find the preferences in the edit menu bar of itunes, open the box in front of the ringtone in Common-Source, and then click OK.

You can see the "ringtone" in the "database". Turn on "ringtone" and you can see whether your file has been converted into ringtone. Just try it.

Then open iphone in Devices, select Ringtones, check the item Synchronize Ringtones, select All Ringtones or Selected Ringtones, and then select Synchronize. After the ringtone is successfully synchronized, the ringtone will appear in Settings-Sound-Ringtone-Customize. To use this ringtone, just select it.