I've met people who talk on the phone loudly in public more than once. Sometimes you have to listen to someone tell you the menu for dinner for half an hour. I can't stand it any more. So I wonder if there's a way to block cell phone signals
Your experience is very sympathetic. We often meet such rude people in our life. Maybe you should try carrying a portable cell phone signal jammer with you. Once such devices are turned on, a range of cell phone signals will disappear. So you don't have to put up with it