Open the itunes app on your phone tap more bottom right corner and then tap tones.
How to create your own ringtone on iphone.
When the syncing completes your ringtone will be on your iphone.
Choose the song you want to use to create a ringtone and click on it.
If you don t want to buy ringtones or use the ones that came with your iphone you can create your own with itunes.
Go to the summary section.
Tap sounds then ringtone to see a list of all ringtones on your phone.
Add the ringtone to your iphone.
The newest ringtone will show up at the top of the list.
Click apply then click sync in the bottom right corner of the window.
Tap its name to set it as the default ringer.
This process changed a bit with itunes 12 7.
To add the m4r ringtone file to your iphone connect your device to your computer using a lightning to usb cable.
Then select the iphone icon in the upper left corner.
The tones library you could previously sync with your iphone has been removed but you can still manually place ringtone files on your phone.