You will need
- iTunes of any version of an iPhone made it jailbrek, Open SSH, ringtone format compatible with iTunes any file Manager.
Select the desired ringtone for sms messages. It should be remembered that sms alerts are best suited the musical pieces are short duration and small size.
Open iTunes on your computer and drag-and-drop the selected music file to the player program.
Go to Prefererences tab and click the Import Settings in the General tab.
Select Import using: AIFF Encoder. It is necessary to convert the selected music file in a format *.caf used iPhone for alerts. In fact, what is hidden under the CAF extension, is a file format AIFF.
Make sure that you remember the save location of the selected musical passage.
Press the OK button.
Go back to the music list and select the desired file.
Call service settings menu by right clicking the mouse on the selected music file.
Enter the command Create AIFF Version to convert the desired file to a compatible format.
Open the folder containing the saved file converted to AIFF format, using the file Manager.
Locate the selected file and rename it to sms-received.caf. The system provides for a iPhone 6 files with the same name, stored in /System/Library/Audio/UISounds and differing serial numbers.
Copy the generated alert file in the above folder.
Confirm your intention to overwrite the existing file with the same name in the dialog box.
Open Settings on the iPhone and consistently go to Sounds and New Text Message.
Select the first sound of the alert. It will become your new ringtone sms.
Use this algorithm to replace all sounds, sms alerts, varying numbers of newly created files from 1 to 5 (sms-received1.caf, sms-received2.caf, etc.).
The duration of a music file, use as sms alert, it is desirable to limit of 40 seconds.
As a file Manager may use software DiskAid or iFile, available in Cydia.