Why LSAC should allow cell phones at the LSAT

Someone suggested that my student should've left the cell phone in their car. Not everyone has a car, especially in big cities like NYC. But while I'm in NYC, my student was actually taking the LSAT on a college campus and still didn't have a way to receive the phone call from LSAC, given the requirement to leave the cell phone back in the dorm (no car to store it in).