After the introduction of mobile phones, the telecommunication industry has undergone significant changes worldwide. While this technology has profoundly transformed the way how people communicate - making it possible to keep in touch with other people regardless of their geographic location - it also has its own share of pitfalls. Contrary to landline phones with which one could easily go through yellow pages or white pages to know a person's contact number, there is no such thing as a directory for cellular phones.

The lack of a public directory for cellular phones allows problems such as annoying prank calls, telemarketers, stalkers, clandestine affairs, threats and hangs ups among other things to occur. Hence, unless the person using the unrecognizable contact number reveals himself, it could be a struggle to determine who is calling you and why that person is calling you. Good thing reverse cell phone lookup services are now available, cell phone users who often receive calls from unknown numbers can track down the details about the anonymous individuals bothering them. This could be greatly used for a variety of reasons ranging from examining business partners, putting an end to late night prank calls or busting your cheating spouse.

Also referred to as grey pages, reverse telephone directory, or reverse cell phone lookup, this service enables users to lookup an unknown contact number and retrieve information such as the name and address of the person to whom the phone number is registered. Online companies that run such a service typically buy access to databases of subscribers from various landline and mobile phone operators. The contact information they collected is then sorted and stored in a huge database that can be accessed by service users.

There are two types of reverse cell phone look up services: paid and free. Obviously, a free cell phone directory service permits its users to search for phone numbers without any fee, which is notably the best feature of this service. One of the main problems associated with this kind of reverse phone lookup service is that it is only capable of providing limited information like the name and address of the user of the unrecognizable phone number, and if a certain contact number is not registered, the service cannot provide any information related to the unregistered phone number. This is because the websites that manage free reverse phone lookups may have limited or no access at all to the databases of telecommunication companies, which explains the lack of information.

In contrast with a free reverse cell phone directory, a paid reverse lookup requires its users to pay a small fee in order to utilize the service. The nominal fee charged by this type of service is relative to the end-user privacy. That is, it is a form of protection that the information provided by end-users will not be used illegally. And unlike free reverse lookup services, paid services give users the most up to date information available for the name and address of the user of the unknown number and may also include criminal backgrounds and even e-mail addresses.

Apparently with the comparisons outlined above, it is safe to say that a paid reverse phone lookup is more useful than a free cell phone directory. This is because a paid service offers you more information concerning a certain contact number and guarantees that you're information will not be revealed at any cost. Of course, a free service can also be helpful, especially for people who cannot afford a paid service. However, if you really would like to be sure that you would receive comprehensive results, it is in your best interest to take advantage of a convenient low cost service.

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