Reverse phone search works by matching a phone number to a person's personal details using large databases. These databases contain lists of numbers along with names, addresses and other information. Many reverse phone searches are free, although it depends on whether the number is a landline or cellphone.
The first step of a reverse phone search is to decide which database or service to use. The easiest way to get started is to use a search engine such as Google to search for the phone number. If the number has been seen by Google on any website, it is displayed along with other relevant information.
There are also free sites that offer reverse phone lookups. These are often more comprehensive than Google, especially if the phone number isn't publicly listed. Free sites can provide data such as name, map location and even the owner's age.
Both cellphone and landline phone numbers can be searched on reverse lookup sites. Many sites are less likely to find a cell phone number though, and they often charge more for this service. Some cellphone reverse lookup sites also charge a monthly fee. The reason for this is that cellphone numbers are harder to access.