I save hundreds on Wi-Fi each year with this Android hotspot trick

I long for the day 5G cellular connectivity becomes a mainstream feature on laptops, but until then, I'm stuck using my phone as a mobile hotspot. By now, I'd bet most smartphone users have tried using their device as a personal hotspot for something else, like a tablet, laptop, or gaming handheld. However, mobile data isn't the only thing your Android phone can share over a Wi-Fi hotspot.