Dial *228, and select option 3 in the voice menu. It will then verify your account information by asking you to enter your number and last 4 of your social security number on the account. After that, it will switch the device from your blackberry to that motorola phone. YOu'd have to call the *228 from the motorola and make sure the blackberry is turned off. There's no cost or fee to do this. Otherwise, you can call customer service and they can also switch the devices from the blackberry to the motorola. Switching fromt he pda to the motorola would automatically drop the daa plan, so you don't have to worry about that either.