Thanks for reaching out! Tethering/ Hotspotting is a special feature we offer all TextNow users.
We've just enabled the tethering feature from our end for you, so just head into your main Settings app in order to configure the network and get started.
Please be advised that we don't officially support tethering on all devices, but if you're having any trouble we'll still try our best to help, just let us know. :)