Which of the following is not a suggested guideline for using cell phones?
give your cell phone priority over face-to-face conversations; the person you are with can wait while you answer your phone.
if you receive a call from a very important client while you are in a meeting, excuse yourself from the meeting to answer the call.
avoid selecting an irritating ring such as a repetitive song.
refrain from using your cell phone in public places where others may be forced to overhear you, such as a classroom.