We report our survey research about what American business professionals consider appropriate or civil mobile phone behavior during formal and informal meetings. The findings come from two of our recent research studies: an open-ended survey of 204 employees at a beverage distributor on the East Coast and a nationwide, random-sample survey of 350 business professionals in the United States. There were significant differences by age, group, gender, region, and income level. The differences between women and men were quite striking, with men nearly twice as likely to consider various mobile phone behaviors as acceptable in informal meetings.