Trying to improve the performance of my son's new Gizmo as cell service at our house is weak - my wife and I use wi-fi calling but that's not an option with the Gizmo. Will VZW's LTE Network Extender improve the service received by the watch if we install one? Some troubleshooting articles indicate a device needs to have "advanced calling" or "HD audio" or something similar to get improved call performance from a Network Extender - just trying to determine if the Extender is actually capable of helping the Gizmo get better service.