Q: Bluetooth- one apple device not paring with another apple device

Check out the supported Bluetooth protocols below.

http://support.apple.com/kb/HT3647

Yes, for Internet Tethering (Personal Hotspot) or for using specific third-party apps that provide peer-to-peer Bluetooth connectivity between iOS devices running the same app (such as multiplayer games, photo sharing apps).

What exactly are you trying to do between these 2 devices over Bluetooth.

What kind of a question is that?

Of course for sending photos, videos, files.....etc...

Android devices and IBM work together much better than Apple devices on this issue.