It’s definitely possible, sure. If you primarily use mobile internet, then Karma could definitely replace your entire connection altogether.
Replacing home internet with Karma Go can be done as well, but it may not be a perfect fit depending on your level of usage. Karma Go can also act as a great backup connection if your home internet goes down.
Karma also can’t replace your traditional call and text service, yet. If you want to receive phone calls and text messages through your phone and a Karma Go, you can use some apps to help, such as Skype, Viber, Facebook Messenger, and WhatsApp.