I bought an i phone to use as an ipod untill i can save up the money to buy the data plan, but everytime i try and play music on it it tells me the accessory is not made for this i phone. the problem is i dont have it plugged into anything. then when i go to the music shortcut ( hitting home button twice) it tells me it is connected to the dock, but it still isnt plugged into anything. Ive tried turning it off. Is there anything i can do or did i buy something useless?