Q: I know people who use different cell phones for different occasions, but with the same phone number, almost like you’d change clothes or jewelry. How does that work?
A: It’s not quite as easy as just throwing on a different sweater, but many cell phone companies enable you to use more than one handset with the same phone number. So a person can conceivably carry an e-mail device like BlackBerry during work hours, then switch to a slender flip phone at night.