Few questiones you have to know before activating Mercedes-Benz carplay Android auto

Now Carplay and Android Auto is the hottest thing for car owner, it bring us more convenience and safty ,and right now more and more aftermarket OBD can achieve this ,but OBD is OBD,Few questiones you have to knwo clear .
1 How to know your car can be activated  “CARPLAY+ANDROID AUTO”function?

There are two USB port inside the armrest, cars with icon( phone+screen ) can use OBD to program “CARPLAY+ANDROID AUTO”functio

2 You have to check Vehicle status before using OBD 

Check if original car already activied carplay from factory.if yes then no need OBD anymore.

How to figure out if carplay active or not? 

Enter original car menu

by controlling the rotary knob,you can see that there is no CARPLY and Android Auto item right now .

3 To make sure OBD can read the car data , your car should be on the ACC ON status. or start the engine,see video how to activate 

Come to here evrything done . below share some pictuers after activating carplay function 

There is a Apple CarPlay menu

and a Android Auto menu

Finnal is the standard picture for APPLE CARPLAY

Thanks all