Database Develop

Note 3 won't connect to PC, Kies 3 installed and everything

So I've run into a weird issue that was happening with my Atrix HD the last few days of its life too and now over to the note on my laptop.
I know this is probably a more computer specific problem, as it's recognized on my desktop but I'm running outta ideas here so maybe someone can help?
I've been flashing and rooting and all that jazz since android was released so I know how to work it and my thinkpad was accepting mtp/android connections as recently as september. I unlocked my Atrix HD bootloader and all that but couldn't get the phone to accept the twrp so eventually I just gave up because it was just a stop gap phone.
But now with my new Note 3, I can plug the phone to the laptop and it'll charge but it doesn't bring up the MTP notification (all my androids do this now)
I've checked device manager, it's not even an unknown device in the list..so weird.
Anyone run into this issue before? I know it's not really phone specific but yeah.
thanks in advance

Are you using it on a USB 3.0 port? My home pc only recognizes mine if it's plugged into USB 2.0. Fought this same fight last night myself. Good luck.
Sent from my SAMSUNG-SM-N900A using Tapatalk 4

Do you guys have BC 1.1 enabled on your machines? If so that's why the 3.0 port doesn't work.
Sent from my SAMSUNG-SM-N900A using Tapatalk 5

to both of you, my thinkpad (for some awful reason) doesn't have usb 3.0, so no there isn't any USB 3.0 issues.
Literally plug it into my laptop, and nothing. no response from the computer at all not even in device manager, just starts charging as if the phone was plugged into a low voltage socket or something.
baffling.
works absolutely fine on my desktop, but I don't have all my adb and sdk tools set up the way I like them on there.
I have no idea.
ERR edit that it just started working :/ weirdd

Verizon note 3 here - same issue.

Do you guys have any programs that's suppose to charge devices faster with usb? It has to be software related on your laptop
Sent from my SAMSUNG-SM-N900A using Tapatalk 5

To everyone with this problem, you have to specifically download the Note 3 drivers from Samsung
samsung.com/us/support/owners/product/SM-N900VZWEVZW
I was having the same problem, but now both Kies and manual usb file transfer work perfectly on Windows 8

I have same problem here as well ?? its not reconizing my phone in usb 3.0 and i have the newest drives as well for note 3 gn 9005

got it working
Had the same problem after trading in handset,maybe there is some kind of hardware identifier messing things up for usb?
I removed (uninstalled and deleted) drivers for usb, including for hub then reinstall hub drivers followed by reinstall driver option in Kies3 to install samsung drivers. This got everything working.

Panikos said:
Had the same problem after trading in handset,maybe there is some kind of hardware identifier messing things up for usb?
I removed (uninstalled and deleted) drivers for usb, including for hub then reinstall hub drivers followed by reinstall driver option in Kies3 to install samsung drivers. This got everything working.
Click to expand...
Click to collapse
I disable fast usb 3.0 charging in the BIOS..Now it works.
---------- Post added at 05:52 AM ---------- Previous post was at 05:51 AM ----------
pachi72 said:
I disable fast usb 3.0 charging in the BIOS..Now it works.
Click to expand...
Click to collapse
PEOPLE DISABLE FAST 3.0 USB CHARGING IN YOUR MOBO BIOS..IT WORKS FOR ME NOW>:highfive:

NOOOO its easy! thats too much work. All you have to do is dial *#0808# and click mtb+adb and that should solve the problem for everyone. If that doesn't click on something else lol but thats what I did.
Hope this helps someone :good:

Android3220 said:
NOOOO its easy! thats too much work. All you have to do is dial *#0808# and click mtb+adb and that should solve the problem for everyone. If that doesn't click on something else lol but thats what I did.
Hope this helps someone :good:
Click to expand...
Click to collapse
Your going to mess your phone up some kind of bad playing with those settings if you don't know what your doing. Also please don't recommend doing any of that without a trustworthy source because you can cause another person to mess up their phone as well.
The Note 3 does NOT support BC 1.1. That's what "Fast Charge" or whatever they call it is. Your phone will not use that connection so there is no workaround, just disable the BC 1.1 function.

Agent said:
Your going to mess your phone up some kind of bad playing with those settings if you don't know what your doing. Also please don't recommend doing any of that without a trustworthy source because you can cause another person to mess up their phone as well.
The Note 3 does NOT support BC 1.1. That's what "Fast Charge" or whatever they call it is. Your phone will not use that connection so there is no workaround, just disable the BC 1.1 function.
Click to expand...
Click to collapse
Yes I stand corrected however I always mess with these settings in order to unlock 90% of the gsm galaxy lineup. This is just a different way of mounting your phone to the computer at least that is what I was told and have been doing for a while. I have tried all the methods on the note 3 and so far no problem. I have been using my phone like this for a while without any hiccups and I had this usb problem since day one on my SAMSUNG laptop so I tried this method which worked. You can easily switch back to the same setting but once again you might be right about the messing up your phone part. FYI MTP just stands for media trasnfer protocal I think so I went with it after a little research.
Just letting everyone know what worked for me no harm done

Android3220 said:
Yes I stand corrected however I always mess with these settings in order to unlock 90% of the gsm galaxy lineup. This is just a different way of mounting your phone to the computer at least that is what I was told and have been doing for a while. I have tried all the methods on the note 3 and so far no problem. I have been using my phone like this for a while without any hiccups and I had this usb problem since day one on my SAMSUNG laptop so I tried this method which worked. You can easily switch back to the same setting but once again you might be right about the messing up your phone part. FYI MTP just stands for media trasnfer protocal I think so I went with it after a little research.
Just letting everyone know what worked for me no harm done
Click to expand...
Click to collapse
I tried installing the drivers from samsung with no luck and then tried this and no luck either. GOD DAMNIT! Why is google making it harder and harder to do this ****? Why can't it be as simple as moving files to another other usb drive like it used to be.

IT works!!it actually works..
what i did was,,download kies 3,supported kies for note 3, and go to Tools tab, and see the option "reinstall device driver" dont unplug your note 3,,and voila!!just wait a while, and see how the kies recognize ur note 3..:laugh:

Android3220 method works for me using Note 3, Windows and Kies. Thank ypu.

Panikos said:
Had the same problem after trading in handset,maybe there is some kind of hardware identifier messing things up for usb?
I removed (uninstalled and deleted) drivers for usb, including for hub then reinstall hub drivers followed by reinstall driver option in Kies3 to install samsung drivers. This got everything working.
Click to expand...
Click to collapse
Do you plug it in USB port 3.0 or in 2.0? Mine, either port are not working

Try using a USB hub,,, 2.0 or 3.0.... this will work......

Go to device manager then to USB find the Samsung driver uninstall. Plug your note 3 in then your system will see your note 3 and reinstall your drivers. Then your good to go.
Sent from my SAMSUNG-SM-N900A using xda app-developers app

Pullback said:
Do you plug it in USB port 3.0 or in 2.0? Mine, either port are not working
Click to expand...
Click to collapse
From what I remember I had tried both and neither worked before re-installing as described

2016 Hyundai Sonata?

Just got a 2016 Hyundai Sonata and am pretty disappointed with Android Auto.
Are there any tweaksn/root for this system or anyway to use other apps with it?

Red_Baran said:
Just got a 2016 Hyundai Sonata and am pretty disappointed with Android Auto.
Are there any tweaksn/root for this system or anyway to use other apps with it?
Click to expand...
Click to collapse
What problems do you have with it (just curious)? There are no mods that I'm aware of, we just have to use what they gave us. If it's an app that's bothersome, contact the dev. and ask them to make changes.
Unfortunately, there is a very small percentage of Android users that have Android Auto so devs are probably not that motivated to tweak it.
Sent from my SM-N910V using Tapatalk

When I plug my phone in to it some times it connects some times i does not, if I leave usb debugging enabled I get a random reboot, random apps not working, the lag, seems to use much more power than the USB port can put out. This happens with a rooted G4 and a stock note 4.
It's hard to find anything useful information about this cars system.

Red_Baran said:
When I plug my phone in to it some times it connects some times i does not, if I leave usb debugging enabled I get a random reboot, random apps not working, the lag, seems to use much more power than the USB port can put out. This happens with a rooted G4 and a stock note 4.
It's hard to find anything useful information about this cars system.
Click to expand...
Click to collapse
Ah, I'm experiencing the same issues, and I don't think they can be remedied by a hacked Android Auto app. I thought you were going to say something about the press limitation or desire for more apps.
I'm not sure if the connection issues are because of Hyundai or android auto. I have found that you have to wait for Bluetooth to connect before plugging your phone in.
The USB port not outputting enough power is the fault of Hyundai. I actually just submitted an email to their corporate about it, but I'm not sure how much good that will do.
Sent from my SM-N910V using Tapatalk

ireknole said:
Ah, I'm experiencing the same issues, and I don't think they can be remedied by a hacked Android Auto app. I thought you were going to say something about the press limitation or desire for more apps.
I'm not sure if the connection issues are because of Hyundai or android auto. I have found that you have to wait for Bluetooth to connect before plugging your phone in.
The USB port not outputting enough power is the fault of Hyundai. I actually just submitted an email to their corporate about it, but I'm not sure how much good that will do.
Sent from my SM-N910V using Tapatalk
Click to expand...
Click to collapse
Yea I didn't think that an app hack would resolve the charge problem. The true reason is the lack of apps and features. I hate when software is artificially limited.
Have you tried a Y cable for the power issue?

Red_Baran said:
Yea I didn't think that an app hack would resolve the charge problem. The true reason is the lack of apps and features. I hate when software is artificially limited.
Have you tried a Y cable for the power issue?
Click to expand...
Click to collapse
I agree, I really wish there was a local music app designed for Android Auto, but there isn't one yet.
I'm actually using a y cable now, but it hasn't helped. I thought it was, but I just went on a 4.5 hour road trip and I had to stop after 3.5 to charge my phone with a 12 volt adapter. Granted, I started the trip with my phone at 60%, but still, it should charge via USB.
I received a response from Hyundai about the USB port and this is what they said:
"The usb port you refer to is working as designed. The only time your phone will charge when connected is when the phone is idle. The port was not designed to charge your phone while connected. Just a reminder that your phone needs to have a minimum of 30% battery life to operate Android Auto."
Not very helpful, and they don't seem to care.
Sent from my SM-N910V using Tapatalk

No problems here with Android Auto on 2015 Sonata Eco. I'm using both a Samsung S6E and Nexus 5X. Be sure to high quality cables.
Sent from my SM-G925P using Tapatalk

I have a 2015 Hyundai Sonata with Android Auto and I had very flaky connection problems when connecting my phone. My phone is the LG G4. What I can tell you is since my phone has been upgraded to Android 6.0 the connection has been flawless and very quick. I stopped using Android Auto because the connection was such a pain but since Android 6.0 I use it all the time now.

jkcarp94 said:
I have a 2015 Hyundai Sonata with Android Auto and I had very flaky connection problems when connecting my phone. My phone is the LG G4. What I can tell you is since my phone has been upgraded to Android 6.0 the connection has been flawless and very quick. I stopped using Android Auto because the connection was such a pain but since Android 6.0 I use it all the time now.
Click to expand...
Click to collapse
Thanks for your input! Looking forward to February when the Note 4 is updated to 6.0!
Sent from my SM-N910V using Tapatalk

I just got the 5.1.1 update on my Verizon Note 4 and I'm happy to report that connection is much better! It usually connects on the first or second try now.
Sent from my SM-N910V using Tapatalk

I also have a 2016 Sonata. One thing I have found that helps is to use the key fob to unlock your car as you are walking up. Do it about as far away as it'll reach. That gets the car's computer to start booting. It then is more reliable bringing up android auto. Most of the cases where I have not had it connect have been when I plug in the phone before the car is fully booted. I also second the comment about the USB cable. I was using a fairly thin one off my Note 5 charger and the phone would drain while using. I bought a 3' cable off monoprice.com and now the phone slowly gains charge.

Want to use phone remotely from pc as security cam. What gadgets do I need?

I just upgraded to an Lg G5 and would like to make use of my M8 instead of sell it.
So I've got one those Y OTG cables but apparently the charging female port is for charging other devices rather than the phone itself. So I'm guessing I need something like this cable but that actually charges the phone too. Any recommendations otherwise, and in addition, can anyone recommend a solar charger that could keep this bad boy powered whilst video recording with motion detection? Otherwise I need that cable if it exists.
And what is the process to connect to a pc and have your phone display pop up on the pc screen? Is "plug-n-play" or more involved? Just need a little direction.
Thanks!

juntjoo said:
I just upgraded to an Lg G5 and would like to make use of my M8 instead of sell it.
So I've got one those Y OTG cables but apparently the charging female port is for charging other devices rather than the phone itself. So I'm guessing I need something like this cable but that actually charges the phone too. Any recommendations otherwise, and in addition, can anyone recommend a solar charger that could keep this bad boy powered whilst video recording with motion detection? Otherwise I need that cable if it exists.
And what is the process to connect to a pc and have your phone display pop up on the pc screen? Is "plug-n-play" or more involved? Just need a little direction.
Thanks!
Click to expand...
Click to collapse
Not really a gadget, but knowledge of and ability to use search would be a great start....
How to Repurpose an Android Device as a Security Camera

http://forum.xda-developers.com/u/reusing-devices/android-phone-free-security-camera-t3298635
OR
Airdroid + teamview ?

solid.snake said:
http://forum.xda-developers.com/u/reusing-devices/android-phone-free-security-camera-t3298635
OR
Airdroid + teamview ?
Click to expand...
Click to collapse
Thanks. I'll check em out

Android Auto not detecting Xiaomi Mi 6 with MIUI Global 11.0.3 (Android 9)

Hi all,
I've just bought a new car and its Android Auto doesn't detect my Xiaomi Mi 6.
I'm running MIUI Global 11.0.3 on Android 9 with Android Auto 4.8.594324.
I connect the original USB cable to the right USB port but nothing happens, both on car and phone. It just starts recharging.
I've tried uninstalling and reinstalling Android Auto on my phone and resetting car infotainment to factory settings but it didn't help.
I've enable Debug USB under Developer Options but it has been useless.
I've given to Android Auto all permissions: autostart, no battery restrictions and access to everything.
I have no cloned apps or cloned accounts.
The smartphone is already connected to the car via bluetooth and the connection works fine.
I know that I should try factory resetting my Xiaomi Mi 6 but I just did it for another reason and it's a pain in the neck.
Is there something else I could try?
Should I try cleaning Google Services cache? Maybe some other service caches?
Is there a custom ROM I could try? Something similar to MIUI or to Android One which is certified to work with Android Auto?
Thanks!

Regarding custom ROMs I found out there are several ones: https://www.getdroidtips.com/list-best-custom-rom-xiaomi-mi-6/
I could try LineageOS, I used to use CyanogenMod back in the days.
I've also found this that should allow me to install an Android Auto Development Head Unit on my PC so I can test if my smartphone is getting recognized, without needing to be in my car.
But I would really love some advices from you, guys, because these are all time-consuming activities I would like to avoid.
Thank you!

Weird, running latest Miui 11 on my Poco F1 and works perfectly in my VW Golf. You've done the correct things to put the program to autostart etc .
The time I tried a custom rom Android Auto was an issue and I immediately went back to MIUI.
Couple of things first. Can you try with another phone? Can you try with a different USB cable? I once had an issue with a cable I used.

That's really weird.
Today I tried with a Huawei Mate 10 Pro from a colleague and it immediately worked fine.
I'm trying with the Xiaomi original USB cable but I've also tried with another good cable from Anker, I have only another one left, I'll try that too.
Anyway, my colleague's phone has been detected when connected with the same cable, so I don't think it's the cable.
When I connect the smartphone to a PC or to Android Auto, using an USB cable, shouldn't the phone pop a notification from which you choose what to do? Recharge only, MTP, PTP, USB mass storage or similar?
I don't have it.

sberla54 said:
That's really weird.
Today I tried with a Huawei from a colleague and it immediately worked fine.
I'm trying with the Xiaomi original USB cable but I've also tried with another good cable from Anker, I have only another one left, I'll try that too.
Anyway, my colleague's phone has been detected when connected with the same cable, so I don't think it's the cable.
When I connect the smartphone to a PC or to Android Auto, using an USB cable, shouldn't the phone pop a notification from which you choose what to do? Recharge only, MTP, PTP, USB mass storage or similar?
I don't have it.
Click to expand...
Click to collapse
OK, so it's not the car radio or probably not the USB cable. Which car is it actually?
Mine asks for charge, ... ... yup the 3 things when connecting, but not sure if it is the same case if you switch on usb developer options. Does it go into charge if you plug it in?
Do the options show up if you connect it to your pc?
If you start Android Auto (lets call it AA) on the phone and go to -> settings -> connected cars ... does it show anything? or is 'add new cars to AA' switched to 'on'?
Not sure if AA works in safe mode. From what I've read on the internet
-Press the power button till we get pop-up window.
-Then press the restart untill you get a popup to boot in safe mode.
-A restart will take take and your phone will be in safe mode.
There are some emulators on Windows and I use a raspberry pi if I need to play and don't want to go to the car all the time which might make it easier to get it running.
I know 1000 things and it can drive you crazy.

The car is a Skoda Karoq from 2019.
The smartphone correctly starts recharging when connected to USB.
When connecting, the three options don't show up. I've tried connecting it to a Windows PC and to a Linux PC, same results.
Doing this test on Windows, I've noticed I'm having issues connecting the phone to a PC and I'm receiving an error "USB device not recognised":
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I think this could be the root cause of my AA connection problem.
I've replaced the Xiaomi Mi 6 USB port few months ago, since it was broken, and maybe the new one is unable to bring up a data transfer.
I'll try to reset my smartphone to factory reset to see if it's a software glitch but now I'm pretty sure it's an hardware one.
lukesan said:
Not sure if AA works in safe mode. From what I've read on the internet
-Press the power button till we get pop-up window.
-Then press the restart untill you get a popup to boot in safe mode.
-A restart will take take and your phone will be in safe mode.
Click to expand...
Click to collapse
Good advice, I wasn't aware of that!
I'll keep that in mind.
lukesan said:
If you start Android Auto (lets call it AA) on the phone and go to -> settings -> connected cars ... does it show anything? or is 'add new cars to AA' switched to 'on'?
Click to expand...
Click to collapse
No, unfortunately it doesn't show anything. Add new cars to AA is on.
I'll let you know how it goes with the USB connection to PC test!

Skoda Karoq, nice, probably the same unit as in my VW.
Well I guess you found your issue. No data via pc will also be a no go for AA since the data of the screen etc also seems to go through the USB interface.
A thing you could try, try to put the phone into fastboot. Normally you will need other drivers .... but I'm afraid it will be the port itself which is broken or not communicating like it should.
Does it even fast charge? Normally a charger negotiates via the data lines what the output will be (referring to QC modes etc)
Seems you are techie enough to get a charge doctor / usb tester on like aliexpress for a couple of euro which will show more.

lukesan said:
Skoda Karoq, nice, probably the same unit as in my VW.
Click to expand...
Click to collapse
Yes! It's probably the same unit, rebranded, with a different UI
lukesan said:
Skoda Karoq, nice, probably the same unit as in my VW.
Well I guess you found your issue. No data via pc will also be a no go for AA since the data of the screen etc also seems to go through the USB interface.
A thing you could try, try to put the phone into fastboot. Normally you will need other drivers .... but I'm afraid it will be the port itself which is broken or not communicating like it should.
Does it even fast charge? Normally a charger negotiates via the data lines what the output will be (referring to QC modes etc)
Click to expand...
Click to collapse
Trying in Fastboot is a good idea but I think you're right when you're saying it's the port iself.
I fixed this Mi 6 myself, since the USB port was broken, I opened it, replaced USB port and battery and glued it back.
The phone recharges itself correctly and fast but I rarely connect it to my PC so the new USB connector has probably had this malfunction since I installed it, but I never noticed before.
lukesan said:
Seems you are techie enough to get a charge doctor / usb tester on like aliexpress for a couple of euro which will show more.
Click to expand...
Click to collapse
I didn't knew these things even existed! :laugh:
Anyway, I think I'll quit testing and I'll buy a new phone, since I don't have time and will to fix this Xiaomi Mi 6 another time.
I'll probably buy a Xiaomi Mi 9T or a Xiaomi Mi 9T Pro.
Just to track everything, before finding out the hardware problem, I did some other useless tests:
I've enabled Debug USB under Developers Options;
I've uninstalled and reinstalled AA a couple of times, also deleting all its data;
I've tried with another third USB C cable;
I've uninstalled Car Home Ultra I was keeping on my phone as a backup for AA;
I've uninstalled Battery Widget 2019 Pro, just to understand if he was messing with USB connection.
Thanks lukesan for helping me with tests and pointing me in the right direction.
I'll come back here and let you know how this ends, when I'll have a new phone

You're welcome. And if the new phone also doesn't work swap the car too. . I personally would go for the Xiaomi Mi 9T Pro but that is me.
As per my advice buy one of those USB measure things. I highly recommend this RD UM34 or the C version. For 14 euro It has saved me a lot to take the guessing out of most things. I just had someone wanting to throw out her tablet since it doesn't charge anymore. 4 years old. It's just a cable issue, the battery and charger are fine.
Want to measure the capacity of the battery. No worries. let it charge from 0 to 100% and check how many mWh went into it. You can also check the QC rates and voltages on the D+ and D- lines or how good or bad cables are.

lukesan said:
You're welcome. And if the new phone also doesn't work swap the car too.
Click to expand...
Click to collapse
It would be a mess explain to the bank why I don't want anymore that loan I've already signed
"You know, my car doesn't work with AA, so here's you thousands euros back" :laugh:
lukesan said:
I personally would go for the Xiaomi Mi 9T Pro but that is me.
Click to expand...
Click to collapse
That's also my favourite so far, for the better and faster CPU, but I don't want to pay 100 euros more than the Mi 9T only for that.
I'll keep an eye at discounts on GearBest and Banggood.
lukesan said:
As per my advice buy one of those USB measure things. I highly recommend this RD UM34 or the C version. For 14 euro It has saved me a lot to take the guessing out of most things. I just had someone wanting to throw out her tablet since it doesn't charge anymore. 4 years old. It's just a cable issue, the battery and charger are fine.
Want to measure the capacity of the battery. No worries. let it charge from 0 to 100% and check how many mWh went into it. You can also check the QC rates and voltages on the D+ and D- lines or how good or bad cables are.
Click to expand...
Click to collapse
That's cool stuff!
I'll definitively buy one in my next AliExpress or GearBest order, maybe when I'll buy the phone

Hi @lukesan, hi all,
here I am again. I can confirm it was an hardware issue. The USB connector in my Xiaomi Mi 6 was faulty.
I've eventually bought a new Xiaomi Mi 9T (regular, not Pro) and it's working fine.
It has been immediately detected the first time I connected it, without any particular configuration and with the same cable I was using before.
I'm just having a minor, but annoying, issue: Android Auto randomly disconnects itself during the drive.
Sometimes it doesn't disconnect at all, more often it disconnects one or two times in a 30 minutes ride and seldom it disconnects every 5 minutes.
I've already uninstalled and re-installed Android Auto on my phone, I've given all possible permissions to it, including Auto Start, and I've disable MIUI battery optimization.
I'm using Android Auto 4.9.594934 on MIUI Global 11.0.3.
Any ideas on this issue?
I'm using a brand new short cable (10 cm) from MYLBOO (USB Type C Cable 5A,USB C Cable 5A,MYLBOO High Speed Charging & Data Transfer USB 3.0 Type C Charging Cable for Samsung Galaxy S9 S8 Note 8, LG, Huawei，Sony,and others USB Type-C supported devi (0.1m) - https://www.amazon.com/dp/B07KZZW155/) but since today I'm trying with the original Xiaomi recharge cable, which is uncomfortable because it's too long and doesn't fit the phone box of my car.
I've already done some researches and I see people is solving similar issues with Anker Powerline+ cables (like this Anker Powerline+ USB C to USB A Fast Charging Cable, for Samsung Galaxy Note 8 / S8 / S8+ / S9 /S10, Sony XZ, LG V20 / G5 / G6, Xiaomi 5 and More (3ft) - https://www.amazon.com/dp/B071G5WSK2), so in case I'll try one of those, but they're also too long for my car.
They're talking about that in this thread: https://support.google.com/androidauto/thread/13722361
I've also found this Android Auto FAQ which could be useful for anyone who's reading: [FAQ] Can’t connect or stay connected - How to diagnose/address the issue - https://support.google.com/androidauto/thread/2467281
I'll try to come back here to write how this ends, too.
Thank you again for your help, lukesan!

No worries man, glad you finally have AA in the car. Sure that Mi9 T is more than fast enough!
I had the same issues and it is both annoying as it is dangerous. Probably it's the cable. (lol check the reviews on your link)
I have some sh*t cables that (seemingly, you guess what I recommended to measure the current) that charge ok but still slower than other good cables and disconnect randomly in the car. Coincidentally the 2 cables that I know for a fact that I have issues with are braided cables (you know the ones with the cloth around them). They were cheap and there is no brand name on them.
The cables I now use everywhere are from Orico or Ugreen which you can buy for really cheap on Aliexpress (but have to wait for a couple of weeks, hint: check shipping options and for 1 or 2 euro more take the registered or alie standard one). I always buy spare cables in all length variations and I tend to have spares at my work and in the car.
I even have a 3 meter long cable which still charges full speed and is ideal when I travel and stay in hotels. Check the reviews and variation of cables. (saw a 25cm Ugreen one while doing a quick look)
That Anker is also a very good brand but unfortunately for you a bit on the long side for use in the car. Btw : Their chargers are also very good

Hi @lukesan, hi mate,
I've ended up buying a short UGreen 90 degrees cable, as you suggested, and it's working great!
It's this one, 50 cm (1.5 ft): UGREEN USB C Right Angle Cable 90 Degree Type C Fast Charger Compatible for Samsung Galaxy S10 S10E S9 S8 Plus Note 9 8, LG G8 G7 V20 V40 V30 G6 G5, Nintendo Switch, GoPro Hero 7 8 5 6 (1.5ft) - https://www.amazon.com/dp/B07PFHB3R4/
The only issue is that the 90 degree angle is in the wrong direction and the cable gets pressed against the border of my phone box, so I don't think it will last as long as it would have (but that's my usual luck):
I'll probably buy a couple of spares of the same cable.
A friend of mine also suggested me this cheap cable he's using on his Kia Stonic: 4A Reload 25CM USB 3.1 Type-C Quick Sync Cable for Game OnePlus 6T / 5T - Red 25cm - https://it.gearbest.com/chargers-ca...=1433363&_branch_match_id=743761025176719207#
I'll probably buy a couple of them too, since they can be oriented in both directions.
So, I think I've solved all my AA issues!
Thank you very much again for your help!

OTG+Charge

Hello.
I'm currently repurposing my old OP3T with broken screen as an OctoPrint server. In order to be fully functional I would need the USB-C port to be able both to connect to a device via OTG (the 3D printer in this case) AND charge the phone at the same time.
I've purchased a USB-C hub (similar to this one) that provides this functionality but the OP3T can't do both at the same time. I would like to know if there's any kernel or mod that can achieve this.
The phone is currently running stock OOS 5.0.5 (Android 8.0.0), rooted with Magisk, kernel 3.18.66-perf+. I've read this working on OPO and OP5T via a custom kernel.
Any and all suggestions are appreciated.
TIA

Personally I've been looking for a solution for about 5 hours now. Been getting some hope, and then that hope crushed yet again... It seems like this phone is not able to charge AND be connected via the OTG cable (and the vast majority it would seem, some exceptions being for example Nexus 7). I also tried using my main OnePlus 7 phone for this, and it seemed like it also had the same symptoms...

Well, it's not only something affecting the OnePlus phones. I've tried many others and I've encoutered the same behavior. The only phone I could get my hands on that has this feature was the Sony Xperia XZ1C.

@J_M_V_S Did you find any solution? I also want to upcycle my OP3 for the same purpose. Found something here - https://forum.xda-developers.com/t/kernel-power-over-otg-host-mod.3201100
But not sure if this can be done on OP3 with 3.18 kernel.