My cell phone is my primary business number. I literally make my living over my cell phone. I'll put it on vibrate but I almost never turn it off. In church, at a movie theater, a funeral, a nice restaurant for supper probably off, especially in the evening or on weekends. At lunch including most restaurants, shopping, barber shop, etc, especially during business hours that sucker is on. I try to be considerate. I don’t talk loudly, or usually very long, but I am not going to miss a deal that may net me thousands of dollars out of concern that someone may get their panties in a twist over it.