How to set different ringtones for different contacts iphone?

If you own an iPhone, you have surely noticed the variety of functions that the product offers you. One of these is the ability to customize a ringtone or vibration for each contact, both for incoming calls and messages. The service is very convenient and allows you to know who is calling us even before seeing the display; it’s a great help when you don’t have your phone at hand. So let’s see how to set different ringtones for different contacts iphone.