The present disclosure relates to authentication system, and, more specifically, to system and method for suppression/prevention of the use of cloned/unauthentic cell phone devices in a cellular network. More specifically, system and method enables for detecting an authorized/unauthorized device in the network. Accordingly, an aspect of the present disclosure relates to a system for detecting an authorized device in a network. The system can include a database of authorized pairs/combinations of connection identifications (IDs) and device identifications (IDs), and a network monitor and server.