Iphone 5 Bluetooth and Pairing issues with Samsung galaxy s duos

Hello. I would like to know the reasons why I CAN'T PAIR my iphone 5 with my samsung galaxy s duos (GT-S7562) using bluetooth to transfer files, contacts, etc.? After doing the routine bluetooth setup, my samsung galaxy s duos successful paired with iphone 5 but connection was disconnected by iphone 5. It comes out with a dialogue box that states it doesn't support this connection and that you forget this device. Why is this so? What brand of phones does iphone 5 pair then?

JRMA_MD