I have an unlimited data plan through Sprint and have successfully connected with the Internet Sharing through the Comm Manager using Sprint PCS, on several occasions. None of which have ever showed up on my bill as an extra charge. But I cannot tell you for certain wether you will get an additional charge for tethering, as I do not know how your billing is setup and do not work for Sprint.
I will tell you that it is a much simpler system than using PDANet. My Vogue is through my work and we have dozens of other employees using the older MOTO Q with PDANet on their laptops. While it does work and seems to be fairly stable, I like the process with the Internet Sharing through the Comm Manager much more. I can connect to the Internet quicker and also tend to get better speeds from it, using my Vogue.
Good luck!
|