As far as I can tell, there is no way to send or receive SMS text messages on this device. Yet, Sprint insist on occasionally charging me 20¢ for an SMS.
Each time, I tell them that the device cannot send or receive text messages and ask them to remove the charge. Each time, they remove the charge, but a couple of months later, a charge appears.
I called them again today, and this time, I added that I wanted SMS capability removed from the account. It is unclear whether they have managed to do this.
I don't actually expect them to have customer service representatives who can understand what a wireless broadband card is--I have a rather low level of expectation for CSRs, actually, which keeps both me and the CSR happy--but I do expect that the customer service system be set up with a procedure for the category "wireless broadband card". Clearly, it has not been, because every CSR has been, or has affected to be, confused about the existence of a wireless broadband card which does not have the functions of a telephone.
And no, I can't use the self-service system and dial #2, #3, or #4. It's not a telephone.
I console myself with the knowledge that I have wasted more than 20¢ of Sprint's money.