Can I Use Alexa Without Wi-Fi?
Essentially, Alexa loses almost all of its functionality when disconnected from the internet.
Can Alexa Work With Mobile Data?

Jeremy Laukkonen
Alexa doesnt care how its connected to the internet.
All that matters is it has an internet connection.
The easiest way to use Alexa with mobile data is to roll out the Alexa app on your phone.
Not all cell phone service providers allow tethering, though.
Amazon recommends an Internet connection with speeds of 0.51 Mbps or greater for streaming through Alexa-enabled devices.