I jlust bought an Iphone

Question

I jlust bought an Iphone and a Motorola T501 bluetooth car speaker. I got it to work immediately-- but now the Iphone no longer gives me the option of using the blue tooth. (At first it gave me three options for a call: Iphone, speaker, bluetooth) Did I inadvertantly disable this feature on my phone??Note--The phone says that bluetooth is on, and it is paired with the Motorola T501 that I have.