so we get this question almost every day and most of these types of questions go unanswered.
the easiest way to know what it is is by looking at the phone. but 99.9% of the time, the phone is inaccessible. the second easiest way to know what it is, is to ask the person who owns the phone. go behind one's back is not a good way to have a relationship.....forgive me, as i'm not the best to be giving out relationship advise.
also you never know, you could get lucky, someone here might recognize it.