L osing iPhone contacts can be frustrating, but there are several ways to recover them, especially if you act quickly. iPhones do not have a straightforward option for restoring deleted contacts ...
So, suddenly, finding your iPhone contact list empty or numbers missing can scare the hell out of you. Fortunately, a way exists to restore iPhone contacts via iCloud if you accidentally deleted them.
But it’s your iPhone, why not use a custom ringtone that only you have? You can even set certain ringtones for specific contacts, so you immediately know who it is when they call. For example ...