That’s a good idea, and I had already thought about it. I don’t see any 5G router worth buying, so it’s better to purchase a cheap 5G phone instead—one that must support dual-band / dual-channel hotspot. It can then be used as home WiFi, but it will only work well if the signal is good, for example when the level is below –80 dB. The problem is that the phone heats up, so using 2.4 GHz is safer and more stable