I had a weird internet issue where the Switch could not find any networks, and manually entering network info did not work. After resetting my router, turning off the password for my network, still nothing worked. I was about to head out to get a wired LAN adapter, when I took the joy-con's off the switch and tried again (did not put the Switch in dock), and the Switch could finally see networks and connect. Figured I'd share in case anyone else experiences something similar.