Have a 2nd iPhone which I want to also use to control thermostat settings. Thermostat shows it connect to an account (an iPhone) but provides no entry key value. How do I obtain the Entry Key? Can only one phone be used?
Answer does not solve problem. Found "Home/Away Assistant" but offers nothing. No entry for "Family". I do not have the current version of Nest thermostat. Perhaps that is part of the problem. How do I determine which version I have?