HC-05 Bluetooth module not recognized by mobile phone
Ok i found the problem.

The HC-05 modules (and probably the HC-06) comes with a Device Class 0 as default. Wich most of the lets say "secure devices" nowdays request the device class to enumerate it corectly.

I've setted the decive class to 00001 (this major class is designed for computers) and finally it was recognized by android without problem.

AT+CLASS=1


It was tested with BlueTerm for Android from Google Play and with the default search for bluethoot devices from comfiguration.

Info can be found:


Here
Here (Mirror)