I have an unlimited data plan from AT&T should I be entitled to tether my phone. Just bought an Iphone 4 which is the third one I have had. It did not come which the Tethering option enabled. In the past I have just jailbroken it and just installed PDANET through Cydia. I don't plan on jailbreaking it so I just wanted to know if I have the right to and how do I go about it.