Help How does it know it's a car dock?

[ThaiM]

How does the device knows it's a card dock? Is there a chip and special signal that gets sent through the micoUSB that tells it so? Right now I use an ExoMount and universal charger. I want it to recognize and go into "Driving Mode" when I plug it in. What do I need? Genuine Samsung car charger?

I don't have any NFC stickers handy. And that would be another step is to enable NFC and then have it scan.

I'm using Profile Scheduler and one of the Rules is to activate my Car Profile when it senses that it's been plugged into a car dock. So how does it know it's a car dock?

 

[BleedingPurist]

It is done by magnet. You can actually test that by using a magnet and finding the spot on the back of the phone that engages dock mode.

So if your dock doesn't have a magnet built in it's not going to work.

 

[ThaiM]

It is done by magnet. You can actually test that by using a magnet and finding the spot on the back of the phone that engages dock mode.

So if your dock doesn't have a magnet built in it's not going to work.

Thank you! I had no idea that's how it's triggered. Gonna find me a magnet and see if I can find the sweet spot.

 

[Prepaidguy9081]

Could also use an nfc tag possably

 

[ThaiM]

Well according to XDA now it seems Samsung traditionally uses a 4 pin short (or something like that) in it's USB connection to denote car mode.

 

[Caloy]

Can you buy a car charger that will launch car dock automatically? Haven't seen any on eBay that specifically says so.