EH-Net

So after reading a couple of different articles on the vulnerabilities of bluetooth. I decided to give it a try on some old phones I had.  Needless to say I hit my first road block early on.  Any help would be greatly appreciated.

I start with bringing up the hci0 interface
bt ~ # hciconfig hci0 up
bt ~ # hciconfig
hci0:   Type: USB
        BD Address: xx:xx:xx:xx:xx:01 ACL MTU: 1017:8 SCO MTU: 64:8
        UP RUNNING PSCAN
        RX bytes:6756 acl:80 sco:0 events:246 errors:0
        TX bytes:3490 acl:88 sco:0 commands:111 errors:0

Next I did a scan for the bluetooth device.
bt ~ # hcitool scan
Scanning ...
        xx:xx:xx:xx:xx:02       Cell Phone

next binded rfcomm0 to the cell phone

Next I did a scan for the bluetooth device.
rfcomm connect 0 xx:xx:xx:xx:xx:02 1

This is where my first problem is  I get the prompt on the phone to bind with my computer and it asks for a pin.  I set the pin is a file
bt ~ # cat /etc/bluetooth/pin
1234

But when I enter it in I get an invalid pin message back.  If anyone could file in the missing pieces I would be greatly appreciative.