Multiple free reverse cell phone lookup directories exist. Some of them include White Pages, Phone Lookup and Cell Revealer. All these directories allow users to identify the personal information behind a cell phone number.
A free reverse cell phone lookup service is useful for individuals who want to identify the person calling them from a number they have never seen before. While numerous reverse phone directories exist, not all of them offer the ability to look up a cell phone number, being limited to landline numbers. According to Dave Johnson at CBS News, services such as Phone Lookup and White Pages deliver information about the identity of the caller, including the name and other personal data. However, the service is not always reliable, as the results may inform the user that the information about the caller is unpublished.
Even though it is marketed for landlines, White Pages returns results about cell phones as well, offering users the ability to block unwanted numbers and spam and verify the real identity of a caller. Individuals who want to look up someone based on a cell phone number may also try to do so on Facebook. Typing a phone number in the search box of the website results in the profile of the owner appearing as a top search result, if he has the number associated with the profile.