A system and method to reduce misuse of radio resources, by modifying radio access network (RAN) features of user devices. The UE segregation server unit [302] as disclosed in the present disclosure identifies one or more UE required to be modified due to which network KPI's are getting degraded, based on an analysis performed by a Network Performance Unit [304]. Further, the UE segregation server unit [302] updates/modifies a UE Capability Indication message to disable certain radio capabilities causing some malfunction in the network based on identification of one or more UEs as erroneous UE based on a successful comparison of the at least one TAC information present in the UE Capability Indication message with at least one TAC information of the identified one or more UE that are required to be modified. This disclosure provides improved throughput for network subscriptions in user devices by saving network resources.