WiFi and Zigbee overlap. (Zwave doesn’t. Typically the only things that cause interference for Zwave are some baby monitors and some older cordless landline phones.) You can also try changing the Wi-Fi channel that your router is using.
Z wave and wifi don’t interfere with each other, so you don’t have to worry about that.
But WiFi can drown out nearby zigbee, particularly boosted Wi-Fi.
At my house, we have a Wi-Fi booster. If we plug it in on the north wall in one room, all the smartthings – controlled zigbee devices to the west of it drop off-line. If we just move the Wi-Fi booster to the east wall, all the zigbee devices work fine.
So the first step is to make sure that your SmartThings hub is at least 3 m away from your Wi-Fi router or any access point.
But sometimes the problem is bigger than that, and your Wi-Fi router is broadcasting on a channel which is just drowning out your zigbee devices.
You do have the option to change your Wi-Fi router, typically between channels 1, 6, and 11, so what’s the best Wi-F…