i work as a flight nurse and i feel i need to carry my cellphone at all times as i never know where in the country i might end up during my shift. when on a flight of course the phone is turned off, however, it also functions as a pda in which all of my protocols are carried as well as med calculations and other information i need to access quickly. my family knows that if they call and i am busy i will not answer the phone. most of the time i get a quick text message from them which eliminates the need to call them back at all. as many others have said if we act like adults and use the phones responsibly these policies would not be necessary.