The Verizon 4G LTE Broadband Router comes with two detachable antennas. These two external antennas are required for proper 4G LTE service and are in addition to the internal antennas that are used for Wi-Fi.
Ensure the router is in vertical position and align then screw each antenna into the antenna ports as shown below. Ensure the connection is tight and secure.
For the best 4G LTE reception, position the antennas so that they are at right angles to each other.