I also find this very troublesome. I have 300+ contacts that I have always been able to move to a new phone with a contact manager. Till now. I cannot find any company that is supporting this phone yet.
Many C-mgrs use the DUN feature to communicate with the phone, ST has it disabled. Maybe that is why they do not yet support it.
I am very happy with voice & text. But disappointed with Internet Browser, lack of games, and contact manager. Contact manager being a real need.