The tones library you could previously sync with your iphone has been removed but you can still manually place ringtone files on your phone.
How to make your own ringtone on iphone 7 plus.
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.
On your iphone 7 7 plus go to settings sounds ringtone and set the song as the ringtone on your iphone.
The good news is that it s simple to set a song as a ringtone on the iphone 7 and iphone 7 plus.
Connect your iphone 7 7 plus to your computer go to tones in itunes and drag the ringtone to the tones section.
Go to sync tones select tones and then sync the ringtone from computer to your iphone 7 or iphone 7 plus.
This process changed a bit with itunes 12 7.
You will need to use a desktop computer for this process.