I don't know about that mang... It seems the word is: that you have to sign the two year contract on purchase. Then again i also hear: that if you are under an existing contract you can buy it "out right" (more than one maybe?) and then transfer your number over and sign an extension or something along those lines.. and something about if you are even eligeable as an axsisting user.... I'm kind of unclear about that.
You activate at home.