An example user device may include a terrestrial mobile network radio; a satellite network radio; and one or more processors to establish, via the terrestrial mobile network radio, a first communication link with a terrestrial mobile network, establish, via the satellite network radio, a second communication link with a satellite network, monitor a characteristic of the first communication link and a characteristic of the second communication link, select the terrestrial mobile network or the satellite network for traffic communication based on the characteristic of the first communication link and the characteristic of the second communication link, and/or perform an action associated with the traffic communication based on selecting the terrestrial mobile network or the satellite network for traffic communication.