Do I need cellular service from a provider to use NumberBarn as my text and calling carrier?

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This is a great question. If you're wondering if you can use NumberBarn for texting and calling without mobile phone service, the answer is "it depends." 

With NumberBarn, you can send and receive text messages, place outbound calls and receive inbound voicemails as long as you have an Internet connect.

Cellular service gives you the use of cellular data when you don't have an internet connection and it also gives you a mobile phone number to forward inbound calls to.

So the answer to this question depends on when and where you want to access your NumberBarn calls and text messages. If you have further questions on this topic, definitely be sure to contact customer support.