@bethb1
Nest Wifi broadcasts on both 2.4 GHz and 5 GHz (and, for Nest Wifi Pro, 6 GHz) for both the main and guest network. This is by design and there is no setting or feature to change that.
The issue with some 2.4 GHz-only devices is not that they need to be further away themselves, it's that their setup apps need your phone to be connected to the 2.4 GHz band during setup. It may be possible to get your phone to connect to 2.4 GHz by moving further away with the phone, then using the app to get your device connected, even though you aren't in close proximity to the device itself. You may need someone to help you near the device if any buttons need to be pushed on it as part of that process. However, if the device requires Bluetooth connectivity with the phone for set up, you may end up too far away for that to work.
In that case, a common workaround is to shut down your Nest Wifi network temporarily, then set up a 2.4 GHz-only hotspot on your phone with the same network name and password as your Nest Wifi network, and use another device connected to that hotspot to set up the device. Once it's connected, you can shut down the hotspot and turn on your Nest Wifi network again.
If you don’t have multiple devices to do this with, another workaround would be to invest in a relatively cheap travel / portable router, that’s capable of broadcasting 2.4 GHz only. You would then temporarily disconnect your Nest Wifi network from your modem and connect the travel router instead, configuring it to use the same network name and password as your Nest Wifi network. Once connected, you can turn off and disconnect the travel / portable router from your modem and reconnect your Nest Wifi network.
Whilst these workarounds can be time consuming, the core of the issue is that the device you have was poorly designed, making assumptions that are no longer valid for home networks. Many well designed 2.4 GHz-only devices have no issues with this environment.
