The instant application describes a method for enabling a mobile station to receive high quality mobile voice and multimedia services over the LTE network across the world, regardless of the operating frequency band of the LTE network. The method includes steps of receiving, over the WiFi network, a connection request at a router from the mobile station; upon determining the mobile station is authorized to use the router for connecting to the LTE network, establishing a WiFi connection with the mobile station; receiving, at the router and from the mobile station, registration information for receiving an IMS voice service on the LTE network; and upon successful authentication of the registration information, providing the mobile station with the voice grade quality of service using the router regardless of a difference in operating frequency between the LTE network and the mobile station.