My Sony Ericsson K790 used to be able to remotely control any bluetooth HID enabled computer with a Remote Control application, which comes as a preinstalled standard applcation on all SE dumbphones.
This Remote Control app connects to any Bluetooth-enabled PCs as a Bluetooth HID mouse and/or keyboard. So any computer with Bluetooth HID drivers (which is every bluetooth stack that I know of) can be controlled by my K790. Quite handy to watch that movie with computer connected to your TV
I was really disappointed when I changed from my SE K790 to my current Nokia E71 Smartphone and found out that noone in the Nokia world has heard of this, especially since the phone is listed as supporting the Bluetooth HID Profile..
Now with my E71 (which I have had for nearly a year but just now I started missing this), I can't find anything that does this.
I have find application combos that implement this but require PC-client software AND Phone host-software to be installed on both devices, but I want to use the native Bluetooth HID profile, like my K790 did, where the PC would detect my phone as a Bluetooth HID device and it could be used right away without the use of a PC-client software.
A Bluetooth HID device shouldn't need any software on the PC except the bluetooth stack. It can used on multiple platforms, such as Linux, Macs and PCs without installing additional custom software on the computer itself.
This is really a pain, I even found the other way around (http://europe.nokia.com/A4144291), I mean, using a HID keyboard to control phone.. But I want the phone as the HID device not the client.
As far as I know, HID was a standard defined for USB devices to work all the same way, like keyboards and mice would all work with the same driver. This was expanded to Bluetooth. So a BT HID drivers were built on top of the USB HID drivers which makes it quite easy to plug & play any Human Interface Device, bluetooth or USB.
I even read somewhere after some hours googling that Nokia devices can't do it and I can't imagine why, as they have HID listed as their Bluetooth Capabilities...