> It would be trivial for the thermostat to figure out if your phone is connected to your home network Which is exactly what the Honeywell Lyric thermostat doe

> It would be trivial for the thermostat to figure out if your phone is connected to your home network Which is exactly what the Honeywell Lyric thermostat does (albeit with geofencing) and it works great. My dad has a Nest, and I knew it would never work for me - my schedule is too erratic. I got the Lyric and I love it. The model of how it sets up triggers is also very simple to understand: (some event occurs) -> (set thermostat temp) where "some event occurs" can be a scheduled time of day, or tapping a button in the app, or the first person's phone arrives at home, or the last person's leaves, and "set thermostat temp" can be + or - some number of degrees, or set to an "away" temp. Since I have 3 of the Lyrics, it also makes it possible to keep some areas of the house at a different temp. E.g. just tap one button and the "bedrooms" section of the house goes to a good sleep temp, while the other sections go to "away" mode. Another trigger turns everything to a good temp ~30 mins before my scheduled wake up time.