Does anyone know why I can make calls using the bluetooth on my F900BT but it will not received calls for some reason? Phone is a LG Flare...

I have the same problem but mines worst, because it doesnt even show the black box where you can see whos calling and making a call is the same no black box.I have the same phone Lg Flare.I hope that the problem is the phone,because yesterday i was trying and trying,tryingggggg and all of sudden the phone died on me,i had to take the battery out of the phone to make it turn on again it did it twice.So who figures whats the problem,the phone or the HU.