Recently came across this gem of an app for remote control of PS3 over bluetooth.
The App is called BlueputDroid by Beserker this allows your phone to become seamless interface device over Bluetooth and has the option to simulate either a BT keyboard or a PS3 sixaxis controller
Of course your android phone needs to be rooted .. If you are on one of the Galaxy Devices you can use this method to root it is by far the easiest
* fine print – I claim no responsibility about it working properly, except say that it worked fine for my Galaxy Note 2 SGH-I317 on AT&T running 4.12 android.