Can You Hear Me Now?: Averted even when there is a major disaster, because Empire-standard communication devices are designed to use mesh networking, and fall back on peer-to-peer routing between themselves if they can’t reach a hub, either to get the packets through directly, or to bounce off each other until they find one of them that can reach a hub.  Even if the fire, flood, explosions, etc., etc., has ruined all the cell-tower-equivalents, the communications network is very, very resilient.