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.
How to make your own ringtone on iphone 7.
Itunes will sync the ringtone to your phone.
On your iphone open the settings menu.
You will need to use a desktop computer for this process.
The tones library you could previously sync with your iphone has been removed but you can still manually place ringtone files on your phone.
This process changed a bit with itunes 12 7.
Change your iphone ringtone to the one you made.
Open itunes on the desktop to get started.
Read on to learn how to make ringtones for your iphone.
Choose the song you want to use to create a ringtone and click on it.
Drag and drop the file right onto the iphone icon on the left side of the screen.
If you don t want to buy ringtones or use the ones that came with your iphone you can create your own with itunes.
On the iphone 7 and iphone 7 plus you now have different options to set custom ringtones for each individual contact and set custom sounds for text messages as well.