Voice over LTE (VoLTE) services may be provided to a roaming mobile device, even when the home network of the mobile device does not provide VoLTE service. In one implementation, one or more devices in a network may determine based on a mobile device attaching to a network as a roaming device for the network, a home network of the mobile device. The devices may further determine whether the home network, associated with the mobile device, provides VoLTE services; transmit, based on the determination that the home network does not provide VoLTE services, a VoLTE client application to the mobile device, the VoLTE client application providing functionality, for the mobile device, relating to usage of VoLTE services in the network. The devices may further communicate with the mobile device and the VoLTE client application, to provide one or more VoLTE services to the mobile device.