Connecting Link G4+ to Samsung S21 not working

General
1

Hi All,
I recently downloaded the RealDash app on my Android device, Samsung S21, but I’ve not yet been able to connect it to my phone via USB > USB type C cable.

I’ve followed the steps here to make sure the settings on the Link are configured correctly - How to connect to Link ECU

I’m using a USB type C OTG adapter and I’ve successfully connected to a friends One Plus 9, but still am not able to connect it to my phone.

I don’t see any differences in the settings for USB on my phone. Is there something I am missing in order to get this connected?

2

What ECU is that? Not all Link ECUs support the direct USB connection.

3

This is a Link G4+ ECU. I was able to connect to a One Plus 9 phone, so I assume the issue is with my Android device and not the ECU itself.

4

One thing that comes to mind is the USB device permissions. When you connect the USB to your device, do you get a system popup asking what app is allowed to use the USB?

5

Nope, nothing pops up when i plug in the ECU, almost like it doesnt recognize it.
When i plug in the USB OTG adapter itself it does recognize soemthing is connected, but if i then connect the USB from the Link it doesn’t show any further pop ups.

6

Hi,
In my case, when I changed from Pixel 3a to 7a, I could not connect.
I had other OTG adapter, so I replaced them with that and was able to connect.
I am not sure of the specs of the OTG adapter, but I would suggest trying another OTG adapter.
I’m happy if this helps.

1 Like
7

Made an account to maybe shed some light on this topic, you will need to turn on USB de bugging on your Samsung, a quick google will explain how to do this, hope this helps

2 Likes
8

Wow, I never even thought this was possible. I always went through a ODBII adapter. This keeps it wireless as well, so charging isn’t an issue. Get a good OBDII adapter that supports CAN and it’s realtime.
Note: I also have a Link G4+

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