Thermostat not connected to internet

[Emilio899]

There is no connection between my phone and my thermostat. I cannot not use my phone to ddo something such set up the tempeture 

[David_K]

Which model of thermostat do you have? You can check here:

How to tell which Nest thermostat you have - Google Nest Help

Did you already finish setup or this is happening during setup?