I currently have a Samsung Sync (A707) GSM phone with unlimited internet on my plan. I would like to get a Samsung Blackjack II or Motorola Q9 PDA with Windows 6 OS, IE browser and Windows media player and be able to sync with my outlook. Would one of these phones work with my current sims card and plan? I have AT&T and am not eligable for an upgrade yet, just renewed in Feb 08.