Did you know you can choose a different iPhone ringtone for each of your contacts? Personalizing ringtones by assigning a different sound or song to each contact means that when a friend calls, you’ll immediately know who it is based on their custom ringtone. You can set as many or as few personalized ringtones for your iPhone contacts as you desire. This ringtone customization has been around for awhile, so your iPhone should have no problem even if it’s a little older. Here’s how to change ringtones on your iPhone, so individual contacts have their own unique sound.