U mean mirrolink?

Yes

BMW X5 4.8iS 2005

Actually useless option! Only good if u show video at the back for baby through tablet :) remember that main screen will be on tablet!

If u want mirrorlink with comfort buy on ebay mirrorlink wifi adapter! There are videos on youtube how to connect if u really need it! Remember that your car aftermarket radio has to support mirrorlink!
Why u need it if your radio has those apps anyway...

Download an app from google play

Ok, so I cannot use my phone for playing a video and stream it on the NAV screen? I know I can have them play through the microSD card or use youtube through the unit but sometimes other people in the car want to play something through their devices....

I'm not sure anymore if the EONON supports mirrorlink...it does have wifi, hotspot but I don't see the mirror option in the menu.

U can use it if EONON supports it! But do u really need 2 screens with the same picture if u have 2 eyes not 4 :D
Download an app and u will know it support it or not! U need mirror link adapter I think so!
Strange option if I can use everything on radio without phone! Only thing is as I said...videos together with somebody who is sitting at the back! If u r driving...u need just music or navi! I am sharing internet from phone and I do not need that option!