Similarly, you may ask, does Google home work without wifi?
So, while Google Home won't respond when offline, Google Assistant on your phone may. At least it does on my Android Device (I'm using a Galaxy S9 Plus). For starters, you'll only be able to access stuff that is already downloaded on your phone.
Similarly, do you need WIFI for alarm? In the past, home security systems used your hardline or home phone lines to monitor your system. Actually, wireless monitoring has become the new normal in home security and it is not necessary to have an internet connection in order to maintain your alarm system.
Correspondingly, do alarms go off without WIFI?
The phone alarm doesn't need a wireless or networking function to work; it's part of the phone's internal time system. So, if you set a phone, alarm, it will go off, and you should hear it even in this mode.
Can I use Google home with mobile data?
Even if you have "unlimited data", some providers throttle phone data speeds when you do a lot of data. Some mobile devices will let you create the hotspot and also connect to the hotspot for setting up your Google Home and others will require a another device to be used for the setup.
