The Motorola Wave TLK100 is an unlicensed 4G LTE and Wi-Fi walkie-talkie. Unlike Portophones-walkies licensed and Portophones walkies PMR446 that communicate via radio waves ### 128 or VHF, the Motorola TLK100 communicates via 3G and 4G and Wi-Fi . So it can only communicate with devices that also communicate over 3G and 4G waves and Wi-Fi. The Motorola TLK100 automatically switches to the strongest available network to ensure reliable communication under all conditions. However, it is necessary to be in an area with good 3G/4G or Wi-Fi network coverage to communicate. To communicate on the 3G/4G network, a subscription to a Motorola network is required . To communicate over Wi-Fi, your network infrastructure must have a Wi-Fi controller and one or more access points.