Reply To: Why does my son’s Rebbi have a smartphone ?

Many schools in the U.S. and EY require their teachers to have access to a smart phone with both cellular and wiFi capability for purposes of emergency communications and preparedness. I’m not sure whether your son’s school is in this category or whether the Rav himself feels a need to have this capability on his person 24×7. I doubt he would use such a device in front of his talmidim for inappropriate purposes (although some hold that simply having the phone itself is inappropriate).