Samsung Galaxy bluetooth drivers

Question

I have written an application for Android. the main part being that it communicates via bluetooth. I have four devices:
1. Samsung Galaxy S2
2. Samsung Galaxy Gio

Answer 1

The problem is, that newer Samsung devices (and HTC sense devices) don't have the full Bluetooth stack.

That is why for example apps like this one don't work on these devices either. The only solution would be to flash a full Bluetooth stack, eg by flashing a Cyanogenmod Rom.