Nest app not working when on data, not wifi (on iPhone 13)

[LeoGiava]

The subject line says it: My Nest app works when at home on Wi-Fi, but has stopped working when I’m using data.  I haven’t tried if it works when on other Wi-Fi’s, when I’m not home. In any event, it definitely used to work in the relatively recent past, but stopped some weeks ago. 

Worth noting: when using data, not Wi-Fi, on my phone, the Nest app asks me to log in, yet the login does not work (“network error” I think is the message).  I was able to log into to the account only after deactivating the Wi-Fi connection on my phone. 

Thanks for any help I’ll receive!

[Ian56]

I have this problem too (same iPhone too). I can change the heat settings in the app but it never goes orange to show its heating and sure enough when I get home it has not worked. I work shifts with varying end times and need to have this feature, any tips please advise!

[LeoGiava]

Ian, unfortunately your problem and mine are not the same. My phone does not log into the app, does not even recognize my credentials, when I am using cell data. 

It would be best to create a separate thread for your question. 

[Ian56]

Ah OK, mine is actually working again now, hope you get yours fixed.

[LeoGiava]

Thanks. 

[LeoGiava]

Update: The Nest app on my phone continues to log me out as soon as I leave the house wi-fi, and the phone switches to cellular data. And, when I try to log back in, it gives me an error. I am able to log back into my account only once the phone is connected to the house wi-fi. 

I have not yet checked what happens when I am connected to other wi-fi networks.