Which is strange. Because nothing happened meanwhile to the old Samsung cables - both cables works with my Huawei and my car - like before. But does not work with the new S21 Samsung. Only difference I know of, is a newer version of Android is running on the Samsung S21, than my older Huawei. And then of course, "old" Huawei new Samsung hardware.
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Yes, on the radio. And the s21 is also connected via bluetooth to the car aswell, but I think that is not the reason why it works OK now for me. It works because I bought a new cable, which apparently did the trick - usbc 3.1 to usba 2.0. My 'old', original Samsung cable (usbc to usba) which worked very well with my Huawei P20, apparently does not work with my S21 ! I don't know why. And Samsung support was of no help to me after 60 minutes in the chat. They kept referring me to Google, even though I stated a lot of times, that I thought it was somehow the cable making the trouble. I also tried similar, samsung cables I already had, and also, they did not work with S21.
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A bought a 25 cm usbc 3.1 to usba 2.0 cable that works fine for me. Not that costly. BUT of course, I also bought some other cables, with same connectors, that did not work that well.
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2 days ago, I had a 1 hour chat with DK Samsung support. he asked me to delete my network settings on the phone at first, this did not solve the problem. At the end he told me to contact Google support. Even though i told him MY PHONE IS NOT CONNECTED to the cardisplay. Anyway, I got an idea. I connected the S21 with the old Samsung cable i used before with my Huawei - to and old PC. Cable is USBC to USBA. This did not work - S21 was not seen by the PC. Then I used the cable in the S21 box, which is as USBC to USBC, and connected this to a new PC - then the S21 was seen right away. I then asked the support guy - please advice where to bye a S21 supported USBC to USBA cable, because I think this might be the problem. he could not advice, because Samsung does not sell such a cable. In my car I have USBA (the old kind of USB connection). Then I started to search the internet for cables (what a jungle) !! After a lot of qualified (or not) guesswork from my side, I decided to spend 150 Euros on various connectors and adapters (crazy situation). I got the cables yesterday. I bought only short lenght cables - this was recommended in other goups with the same problem.... I tried also to see if I could find a "quality" cable (whatever that is, looking to the price, gold coated connectors or or or - who knows...). BUT one of these cables actually worked !! Suddenly Android Auto appeared on the cardisplay !! Hurraaayyy ! Now, I start to be happy with my new phone, even though some of the excitement went lost, due to all these problems 😞 So solution is, bye a new cable - and hopefully you can find a person, who can help you bye the right cable (and only one cable), the first time. Enjoy and good luck with your Samsung S21 Ultra.....
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That is the strange part, because this is an original Samsung USB-C to USB cable I use (1 m length). And it worked very well before with my Huawei S20 and Android auto on the car display. Additionally I have a 3,5 jack to usb-c adapter i used with my Huawei S20 and my old headset with jack. This is also no longer possible with the new Samsung S21. Something about that it's not compatible. So I think maybe the S21 has "another" USB standards/interface "protocol".
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Hi There is nothing to delete - the phone is not connected yet to the car. It just say, please connect via USB to the car - but the phone is already connected to the car via USB. And nothing happens from here. Nothing shows on the car display.
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Im having the same issues with my new s21 as a lot of other users. S21 cannot show Android Auto on my car display. It worked before in my car with usb to usbc and my Huawei (!!) S20. After changing to Samsung S21 Ultra, suddenly it does not work. What a bomber, im soo disappointed. Thought Samsung would be better integrated than Huawei.... and I see currently no solution for this problem. Samsung...PLEASE help us ??
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