Card machines are WiFi and 4G enabled, its up to you which is the best option depending on your signal and WiFi strength.
To change between WiFi or 4G connectivity:
Turn on your device by holding down the power button, it may prompt you at this point to select and join a WiFi network.
Once you are on the home screen you’ll typically see three apps:
Payments
Transactions
Settings
To change internet source:
Select the “Settings” app.
Select “Network”
Use the passcode for the settings app that you receive in your original shipping email from [email protected].
Find out more about these passwords here
Here you can turn WiFi on or off, add networks etc.
Once you have a secure internet connection you can begin to use your card machine.