Except that new device, regardless of whether you paid full price or not, will not be compatible with the currently offered data plans. They'll force you into it. Just like years ago when I was forced into a limited text messaging plan from the unlimited plan I had before even though I was only going from one dumb phone to another. If I wanted unlimited texting I had to upgrade to a higher plan. Somehow the new dumb phone wasn't compatible. Basically, they just wanted more money and were making up excuses.