Can you send surveys via text? If so, how?
To answer your question directly, from what I know, there is not a phone/text capability integrated directly in SurveyGizmo. However, there are workarounds.
What I’ve done in the past within SG and has a high successful send rate, is, send an email to the phone number @ the carrier’s main email address. So, for instance, if the person uses AT&T, send to firstname.lastname@example.org. You can find a list of the most popular wireless emails here.
If you don’t know the phone numbers’ carrier and aren’t able to ask them (or Google it), you might have some success just sending the text to all the major carrier emails.
Hope that helps!