Get got an off lease X5si that did not come with any options for smartphone integration, NAV etc. It does come with an idrive. The dealer tells me that nothing can be put in after the fact. I'm not convinced. I've looked through the forums to find out what people are doing and it is not very clear that my particular model is included. Could someone kindly educate me on what options are available for:

bluetooth & Iphone integration
NAV & screen upgrade

Much appreciated.