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Just setup the device. Was simple to begin with. No issues at first. Then when trying to change the wifi to our secondary wifi network which is a network that we setup with all our smart home devices to separate our home computers from all the vendor devices we ran into problems. Both the iPhone and Android apps refused to complete the setup. I tried everything from reinstalling the apps to a factory reset on the thermostat. Finally I broke down and called support. After waiting about 10 minutes on hold, I was connected with a support rep. He was good, though still took over 45 minutes on the phone total to determine my secondary WiFi likely has blocked ports or uses an unsupported security protocol. Better error handling should be built into the apps and/or thermostat to prevent this run around. Once working, I like it so far. Geo-fencing worked yesterday and and after a couple tries Alexa was hooked up as well. Here's what tech support mailed me for supported WiFi. I have yet to mess with my router to see what is not compatible. 1. IP address has to be dynamic. 2. Router needs to broadcast signal 2.4ghz. 3. The following ports open: 80 443 113. 4. Password needs to be alphanumeric. 5. Thermostats are not compatible with the following security settings: WPA AES PSK WPA2 TKIP PSK If router is set to one of those two above it would have to be changed to something else. 6. Set Google Public DNS as the DNS service 7. Enter IP addresses 8.8.8.8 and 8.8.4.4 as primary/secondary DNS server Protocol / Security Standards Honeywell's Wi-Fi thermostats are compatible with the following Wi-Fi security standards: OPEN WEP PSK WPA TKIP PSK WPA2 AES PSK WPA2 MIXED PSK They are NOT compatible with the following: WPA AES PSK WPA2 TKIP PSK change the router settings to one of the supported settings above. If you are unsure how to do this, please contact the router manufacturer Mac ID and CRC displayed on stat, insert card, and back of stat. There is a dropdown box on the registration screen @ mytotal connect to select wi-fi stat or gateway device.