The system does not work with a pixel phone . They don't tell you that when they sell it to you I had to wait for my wife to buy a new phone; over a year to get the system to even recognize the phone. Sadly the installers didn't seem to care that was my problem to fix.
We are able to save with this thermostat as the utility company raises the temperature a few degrees when electric use is high and then our monthly bill is reduced.
We had air conditioning installed and the tech replaced our old thermostat with this. I like it a lot. I change the settings and program it using my phone. It’s so easy to use.