So I currently own a Pantech Pursuit, on the At&t Network. I am currently paying for unlimited everything (web, texting, calling). I recently purchased an unlocked 3GS iPhone. I put my SIM in, and it allows me to text and call, but won't allow me to use the internet. So two questions: 1) Am I being charged extra for texting and calling as of this moment? 2) Why can't I use the internet?