Default Bmw 320i e46 and galaxy note 2 n7105

Hi all, hopefully someone out there has an answer.
I purchased a 04 Bmw E46 320i executive last week .

I have only one issue and that's the bluetooth connectivity.
Firstly It definitely has bluetooth installed because I can connect to it with my phone no problems and pair them. However the connection lasts about 3 seconds and then disconnects. If I turn the car off and restart same thing again connects for approx 3 seconds and then disconnects. It seems to be an Android issue as my sons iphone 4 seems to connect and retain connection with no problems.
I have aSamsung Galaxy note 2 on Android 4.3 and my daughter also has the same phone as me and it behaves exactly the same as mine.
My question is, does anyone have similar issues and if so how did you overcome it.. is this a common issue with Android ?

How v there's an answer or there.

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