I find it very strange that the existing answers don't find communication over text with a recruiter to be strange or problematic. I like to have an easy access to past communications. Texting, in my experiences, doesn't make it easy to handle searching messages. Longer messages are also harder to manage. Unless you use Google Voice or your carrier provides a service, they are also limited to access on your phone and could even be lost if you replace your device and don't move them over.
I'm not sure I would call texting "unprofessional". Recruiters and interviewers have given me their cell phone numbers and told me I could text them. It has a place - if something comes up on the trip to an interview or to let them know that you've arrived (especially if the company doesn't have a receptionist or front desk). But it's not the most robust or reliable method of communication.
If, for some reason, you don't feel comfortable communicating over text with your recruiter, you should let them know and why. Personally, I would prefer email communication (with phone calls when necessary) for the reasons I outlined above. If the recruiter isn't able or willing to make such a simple accommodation, that speaks volumes about the recruiter (and if the recruiter is working specifically for a company, the company itself).