Localization is a process which is used in mobile communication and in the web communication likes geographical area and exact location, there a particular user is lived. Localization is done by cellular servers by collecting the unit data of a SIM through signal towers and then correcting the precise location by various algorithms whereby error is removed by probability. Localization in Web services is usually done by third parties, where potentially important information is in unreliable hands. Localization involves identifying a user and tracking its geographical location, ostensibly in order to provide a better user experience. Nearly all cellular or Web-based services use Localization to provide service to their users.