Thank you... I was referring to Sirius/ XM and I found out the unit unfortunately does not support it.To answer your questions, Grim Reaper - I have the non-JBL version, and I thought it sounded okay as a stock system. Not the greatest but I'm no audiophile, and I got just enough oomph out of the sound for my taste. Having said that, the Android system sounds practically the same, if not slightly better. There are equalizer settings that you can tweak, which offer a little more options than the stock head unit. I'm sure people generally like to upgrade their speaker system when they install a new head unit, but I did not.
Blown383 - The radio reception is fine on this unit, as was the stock reception. I don't notice any difference. I can get all the local stations, and have no issues with radio reception.
LW3 - There is no on/off button, but there is an option to turn off the screen. It is essentially like having a tablet in your car, and the same way you can turn off the screen on your phone / tablet, you can do the same on this head unit. The unit turns on when you turn on your car, and can be "off" if you're not playing any media and have the screen off.
In terms of the plug ins for the stock hazards , defrost, airbag, and security, I didn't do the installation myself, but I took a look at the back, and there are connectors that basically unplug from the back of the stock system, and into the new head unit. I have to say that I did decide on this 12.3" screen version over the 10.25" screen version because it takes advantage of the space on the sides where those 4 buttons are (which I never use - I hardly use the rear defroster on the back window, I never use my hazards, and the airbag / seatbelt lights are just there on the right side wasting space).
As far as satellite capabilities, do you mean GPS, or radio? It comes with a GPS antenna which works with the built in iGo maps supplied with the unit. I prefer Google Maps, which doesn't require the GPS signal, but yes, it does have satellite capabilities if that's what you're asking.