The appeal of the Netgear Orbi 4G LTE is obvious: it blankets your home in Wi-Fi that connects back to a SIM card, which means that even if your broadband falls over, you can still get online ...

Not so with Netgear’s Orbi, a wi-fi system that uses “mesh” technology to ensure quality coverage throughout a home. Its main router beams an Internet signal to one or several satellite ...