Systems, products, and methods are disclosed for preregistering with a second network a mobile device that is currently being serviced by a first network that utilizes a different wireless-communications technology than the second network. An embodiment of the method includes facilitating wireless communications with a plurality of wireless devices by way of one or more base stations that form a portion of the second network, which utilizes a first type of wireless technology; and receiving by way of a portion of the internet, and not through any of the one or more base stations, a preregistration request that was sent through the first network and that is associated with the mobile device, which is currently being serviced by the first network, the preregistration request including identifying information that is useable to identify the mobile device and further including a request to prepare the second network to service the mobile device.