The teacher in the staff room picks up her cellphone, "I'll call her, don't want to worry the other students."<br/><br/>Plain and ordinary, she punches the auto dial and looks confused, "Out of range?"<br/><br/>The rest of them look at each other and another tests by calling home.  He gets an answer, and then he tries Noriko-san's number.  Same response, "Caller is out of range."<br/><br/>They all start chattering among themselves, promptly forgetting about Matt, and wondering if they should call the police now...