Originally Posted by Noodle22
Some providers have 'unlimited data' and still charge for tethering. The best is to call your carrier first because they most likely know when your doing it.
That is correct. But if you already have unlimited blackberry plan, tether will simulate blackberry connection when you using your blackberry as a modem. That's way from carrier point of view, you just do normal blackberry connection, not tethering. No extra charge then.