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Can't connect my phone to my car stereo?

Hi i've recently bought a car stereo for my Vauxhall corsa 2011, everything is working just fine but when i try to connect my Huawei Mate 20 pro via usb cable to mirror the phone it never connects!
this is the stereo
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I have tried using the original cable also enabling usb debugging but it does not connect at all while i tried my friends phone which is an HTC and it went great and connected without any problems? Can someone please help thanks!
#Edit
This is my settings and the attempt from HU to connect to my phone over and over on loop

Wifi,Bluetooth & Hotspot Not Working On XIaomi Redmi Note 4

Hey, I recently came across this problem in my phone regarding the wifi,bluetooth, & hotspot not working. The problem is that the WIFI is turning on but is unable to search any network in it's range,similar goes to the Bluetooth and hotspot. I've already tried the factory data reset and even flashed a new rom on the device,but the problem still remains there. Is it a software or a hardware problem? I checked the WIFI information there it shows the wifi is enabled so i think it's not a problem related to hardware. Is there any solution to this?
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Downgrade or custom rom

I have a Chinese aftermarket "JMANCE 2 Din Car Radio Android"
it comes with android 8
The biggest drawback is not that is the graphical interface, is about how limited it is with the bluetooth functionality, it does not always work well if the system is suspended, I have to restart the system to make it work again and the translation is awful
I am using it only for obd2 with torque and some music, that is all, but bluetooth start always to fail when I turn of the car and go back, I have to restart the system to make the bluetooth works again
I do not know if MTCB or MTCD
I am looking for some recommendation if downgrade or to install a custom rom to improve the system
I leave some pics
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Always-on VPN not showing VPN in list

Hi,
I am trying to connect to a vpn clearly in my list of VPN and am unable to use the always on VPN feature.
I am using an old phone as a ip webcam hence the old version of android but it should still work.
Have tried, forgetting and reconnecting to vpn, a different vpn app restarting, shutting down and letting it sit for a while and pray it works when it turn on but no luck.
Using a sony z3 compact with android 6.0.1 on it, no sim card inserted just wifi.
see image of VPN clearly in the list but not comming up when trying to select it for always on.
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Hello, I have elm327 device. It finds it as 'OBD II' in the bluetooth search systems from my car stereo. But when I click on it I don't get any response. When I tried with the Bluuetooh pair program, the device was not found. When I go into the car settings, my setting shows as bc6. How can I match. Because I'm looking forward to using my tool with Torque Pro. I explained the whole problem in the video. Help please
Video:

@kavirz help please
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Is the right software for me wrong? I can't connect bluetooth @kavirz

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