I am having all kinds of trouble reconfiguring WiFi connected devices that require setup through a cell phone. I believe I have discovered the problem, which is that there seems to be client isolation set within the same frequency's network. It's possible I'm blind, but I don't see a setting for this anywhere. I have verified this by segregating the WiFi networks and pinging the devices in question from my phone (IPs pulled from Device Manager). From 2.4 GHz to 2.4 GHz, no traffic is passed but when I connect the phone to 5 GHz it is suddenly able to ping and device setup completes. I can't ping in the other direction, as these other devices are smart home devices and have no console. I have further tested this by running a constant ping from my phone to a laptop and switching between the two networks. As soon as the laptop connects to the other network, pings start coming back. Networks in question are the secured networks, not the guest networks. Where can this be turned off?