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Summary: Block a cell phone number when making a call by entering *67 before dialing the 10-digit phone number. Learn how blocked cell numbers will show up on a caller ID as private or blocked numbers with information from the manager of a cell phone store in this free video on cell phones.
Geordie Andurlakis is the store manager at an AT&T Spring cell phone store. He is very knowledgeable with cell phones and has been manager for more than two years.read more
"I'm Geordie with AT&T Spring. I'm going to show you how to block a cell phone number. I'm going to show you how to block a cell phone and in doing so, this means that any phone that you call using your cell phone that has a caller ID will not be able to identify your 10 digit mobile number. It's as simple as entering in a code before you dial the 10 digit number that you want to make a call to. The code is *67 followed by the 10 digit phone number and then placing it as a regular call. This is going to allow the person that you are calling not to see your 10 digit number but it'll display on their caller ID as a private or blocked number."
eHow Article: How to Block a Cell Phone Number