How to set SMS ringtones for iPhone 7?

Iphone7 system comes with ringtone settings: click phone settings-sound-ringtone, and then select the ringtone that needs to be replaced.

First of all, what I do is download iTunes on my computer, and then install it. ITunes is a special synchronous download software for Apple devices.

After installation, open iTunes and import your favorite music (download good music in advance); Pull it directly into the music database. If you can't drag, you need to click the file in the upper left corner and select Add to the database.