Was unable to connect thermostat to my Android phone for over a year, until I bought a new phone that used the most current version of Android. Very disappointing. The app consistently requests my pass code a couple times on each startup.
The thermostat is very nicely equipped and was a perfect fit to replace a T1 since the foundation of the device is the same. The WiFi was fairly easy to configure and connect and the Honeywell Home app is okay, though somewhat simplistic.
I am thoroughly impressed with the T6 Wi-Fi thermostat and the technical support team. I called Honeywell technical, once for the C wire hook up and another time for Wi-Fi set up. I have never experienced technical support so impressive! With patience and expertise they quickly resolved my problems. Totally awesome!