Let me give you a quick run-down of what is involved:

you need a factory nav

you need a factory TV module with RCA inputs activated

you need a picture-in-motion hardware (not firmware mod) that also allows you to have the TV activated with the radio/CD/tape/AUX still activated (video from the tv module, but not the audio from tv module)... There are modules on ebay.de from german sellers that do just that

you need an AUX input activated

you need a BT to 3.5mm AUX input adapter (about $20 from wal-mart)

you need an MHL enabled phone, i think iphone does it... MHL converts phone picture to HDMI, so you need to downgrade HDMI signal to RCA signal (about $30 from amazon)

and of course, you need a phone that can do MHL and BT channel for phone and a separate BT channel for stereo audio output (to preserve the ability to use the car's BT module)

my roadblock at this moment is the fact that the phone's charger can not keep up with the power requirements of the phone, and it discharges while connected to a charger, and lasts me for about 60-90 minutes running Waze and Tune-In application for radio broadcasts.

from my research, the GSM can use up to 2.5 Amps of current, the charger that came with phone was rated at 1 amp, i found a 2 amp charger and finally got myself a 3 amp charger that i had to hardwire... but, even the 3 amp charger can't keep, as the phone is obviously using more current than that - to be exact, once the power requirements exceed the charger's capacity, the voltage of the charger drops and is not capable of charging the phone any longer... i did locate a 5 amp power supply that i am studying now, and in worst case scenario, i will have to built an 8 amp power regulator - it does not mean that the phone will dissipate 40 W of energy, all it means that the 5V DC will not drop below charging level once the demand goes up...

i hope i did not overwhelm anyone on the technicalities here...