change bluetooth bitpool on iphone

Is it possible to set the bitpool rate higher on the iphone?

i bought myself a belkin bluetooth receiver but i'm not happy with the sound quality my iPhone sends.
I managed to change the settings on my macbookpro with following order in the terminal:

defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Max (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 53
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool (editable)" 40
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool" 58
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Max" 58
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Min" 48

The sound is way better now!

Can this be done on the iPhone too?
Because the default bluetooth bitpool output sounds crappy.