Develop Bugs

microUSB to audio ? (+ power source?)

Hello friends, I was a previous owner of the Galaxy S1 which had an incredible placement of the 3.5mm and the power connection
Basically when I use my phone on the car, I used to connect both cables on the same side of the phone and I would get audio on my stereo system while charging the phone (I used a normal dock to hold my phone)
But now with the GS2 I have a huge problem. The Micro-USB connection is at the bottom and the 3.5mm is at the top... This creates a huge problem for me at my car so...
I'm looking for a Micro-USB adapter that gives me both audio and another microUSB slot (So I can power my phone)
Does such thing exist or is it only possible to have one of them? Not both?
I also thought about buying the Desk dock and finding a place to fit it to my car, but that's very troublesome because the official GalaxyS2 dock is expensive and huge...

Just thought about this. Would a Micro-USB splitter work ? On the split connections I would connect the power and the Micro-USB to 3.5mm adapter
I also found this from Palm
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But it's discontinued

The official car dock has usb power and audio out via the micro usb port. It works brilliantly.

rob_h said:
The official car dock has usb power and audio out via the micro usb port. It works brilliantly.
Click to expand...
Click to collapse
But it's too expensive I think...
It has to be mounted on the windshield right?

I would love to find out about this as well, but I seriously doubt any good solution exists besides the stock dock.
Sent from my GT-I9100 using XDA Premium App

Arkanius said:
But it's too expensive I think...
It has to be mounted on the windshield right?
Click to expand...
Click to collapse
It's £34 but worth it IMO. Any reason why you don't want a screen mount? I have mine right at the bottom of the screen and it's never come off and is quite discreet.

rob_h said:
It's £34 but worth it IMO. Any reason why you don't want a screen mount? I have mine right at the bottom of the screen and it's never come off and is quite discreet.
Click to expand...
Click to collapse
Destroys some of the aesthetic of the car. I have a MINI Cooper and the holder I used was on the cupholder down by the Gear knob. All the cables were hidden and right by hand.
I'll try the Car dock since it has both charging and audio sources... But I think the cheaper solution would be the mini USB splitter.
I'll try both.

I'm interested in this too!

You need a micro usb connector.
Pin 1 connect to +5V
Pin 2 + 3 connect to audio l + r, Ground to Pin 5
Pin 4 connect to Pin 5 via 620k Ohm Resistor -> this triggers Car dock mode
Pin 5 connect to Ground
Go to Settings/Dock Settings/Audio-Output-mode
Pin 1 is right when the connector is in the SGS II and the screen is visible.
Voila, ALexander

This is also interesting to me.
I currently have a HTC Desire HD, and it does'nt send audio out via microUSB, so in the car I have a passive holder and connect a 3.5mm and a microUSB to charge and play music at the same time.
Anyway, I'm soon getting a Galaxy S II from work, and was wondering about the audio out and charging.
My car has an USB input, does the SGS both charge and output audio at the same time via the microUSB port? (My old Desire did )

If you feel like soldering:
http://forum.xda-developers.com/showthread.php?t=1321491

The official car dock has a screw connection for the cradle to attach to the suction mount so you could take it off.
IMO it is a great piece of kit and holds the phone securely even with the extended battery.

I bought the original samsung car dock but I'm having some issues:
- If I plug the USB directly to the car stereo USB port, the USB is not mounted.
- If I receive a call, the audio do not output from dock audio-out. If i plug the audio cable to the cell audio out, I can hear the call from car speakers, but not if plugged directly to car dock audio-out. Btw, if no audio cable is plugged, I can hear the call from SGS2 internal speakers.
Does anyone can help me?

1. i think the micro usb port is only for charge, not data...
2. this is the normal behavior of this car kit....ask to samsung why didn't make audio calls going out through usb connector. As this is about software maybe can be forced in some way by a modded kernel, but i couldn't find anything around...

Phone calls work through my car - via the micro usb.
It depends on the kernel you are using.
I use westcrip 8.6 ics rom - everything works fine.

I'm using CheckROM... it even if I use a specific APK I was unable to reproduce the sound through the dock audio-out.
Anyway, I can't belive that USB plug cannot mount. If I use a normal cable I'm able to mount, but with the dock I can't.

lar1r said:
Phone calls work through my car - via the micro usb.
It depends on the kernel you are using.
I use westcrip 8.6 ics rom - everything works fine.
Click to expand...
Click to collapse
Are the call working on stock ics too? What is your kernel?
edit:
i'm trying to make a bit of order on audio out/calls using car dock, take a look here
http://forum.xda-developers.com/showthread.php?t=1531483
Inviato dal mio GT-I9100 usando Tapatalk

This cable offers one solution, providing an adapter to iFern docking speakers.
I'd like a microUSB speaker dock though.

Looks like Philips Fidelio is an option.

USB OTG Adapter

Has anyone been able to find a USB-OTG adapter for the Galaxy Nexus similar to the USB adapter for the Galaxy Tab (pictured below), i.e. one that's just a compact adapter without a cable between the two sides?
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Check amazon... they have otg cables on there without the cable. Its kinda bulky though.
Sent from my Galaxy Nexus using xda premium

Can't that OTG for the Tab work?

Shamrock13 said:
Can't that OTG for the Tab work?
Click to expand...
Click to collapse
No! The galaxy tab does not use micro USB, it has a proprietary cable system somewhat like apple ipod
Sent from my Galaxy Nexus using xda premium

http://www.amazon.com/NOKIA-CA-157-Adapter-cable-Nokia/dp/B0050LO0QE
i just use the one that came with the nokia n8, works just fine

Alpha Class said:
http://www.amazon.com/NOKIA-CA-157-Adapter-cable-Nokia/dp/B0050LO0QE
i just use the one that came with the nokia n8, works just fine
Click to expand...
Click to collapse
You use that one with the Galaxy Nexus?
Looks like it has a MicroUSB-A plug, which shouldn't fit into the Galaxy Nexus's MicroUSB-B port.

Chirality said:
You use that one with the Galaxy Nexus?
Looks like it has a MicroUSB-A plug, which shouldn't fit into the Galaxy Nexus's MicroUSB-B port.
Click to expand...
Click to collapse
correct, just trim the corners, 2 sec job

I bought a 2$ cable from dealextreme for the Galaxy S2. You can find them at the same price on ebay... they work fine, tested with a USB pen and a SIXAXIS.
Now waiting for franco to update his kernel with the NTFS module to try out my external HDD.

Alpha Class said:
correct, just trim the corners, 2 sec job
Click to expand...
Click to collapse
Trim the corners on the cable? Or the GN?

Chirality said:
Trim the corners on the cable? Or the GN?
Click to expand...
Click to collapse
on the cable itself
mind you i did this simply because i had the cable lying around and it wasn't being used
its only a suggestion for the cheap among us , i suppose if i had to buy a cable, i'd just plop down for the micro b

is there a usb otg cable capable of allowing charge and being the host at the same time? or is it even possible? i'm reading mixed results on this. that it is possible and it's not. i want to scream.

pukemon said:
is there a usb otg cable capable of allowing charge and being the host at the same time? or is it even possible? i'm reading mixed results on this. that it is possible and it's not. i want to scream.
Click to expand...
Click to collapse
What you are looking for is a USB Accessory Charger Adapter, which exists in the USB spec but does not seem to actually exist in physical form.

Chirality said:
What you are looking for is a USB Accessory Charger Adapter, which exists in the USB spec but does not seem to actually exist in physical form.
Click to expand...
Click to collapse
so what you are implying is a usb accessory that is kind of passive but allows charging, and if you boink it with another micro usb accessory, usb otg cable here, that it will allow the necessary usb spec for otg also? hmmm...

pukemon said:
so what you are implying is a usb accessory that is kind of passive but allows charging, and if you boink it with another micro usb accessory, usb otg cable here, that it will allow the necessary usb spec for otg also? hmmm...
Click to expand...
Click to collapse
No, what it is is a special USB OTG adapter that has three connectors, a micro USB plug to plug into the host device, a USB socket to plug in the peripheral device, and a micro USB socket to plug in a charger. It also supplies a special resistance on the ID pin to the host device to let it know that a charger is connected so the host does not supply a voltage on the VBUS. Without this special adapter with the ID pin resistance, the host will supply a voltage to power the peripheral which will not work with the charger on the VBUS. Thus this special adapter is needed. This is defined in the USB OTG and Battery Charging specs, but so far it doesn't seem like anyone is manufacturing such a thing.

Chirality said:
Has anyone been able to find a USB-OTG adapter for the Galaxy Nexus similar to the USB adapter for the Galaxy Tab (pictured below), i.e. one that's just a compact adapter without a cable between the two sides?
Click to expand...
Click to collapse
Here http://www.dealextreme.com/p/micro-usb-on-the-go-host-otg-adapter-pair-50774

Chirality said:
No, what it is is a special USB OTG adapter that has three connectors, a micro USB plug to plug into the host device, a USB socket to plug in the peripheral device, and a micro USB socket to plug in a charger. It also supplies a special resistance on the ID pin to the host device to let it know that a charger is connected so the host does not supply a voltage on the VBUS. Without this special adapter with the ID pin resistance, the host will supply a voltage to power the peripheral which will not work with the charger on the VBUS. Thus this special adapter is needed. This is defined in the USB OTG and Battery Charging specs, but so far it doesn't seem like anyone is manufacturing such a thing.
Click to expand...
Click to collapse
Would anybody be able to help make a cable to allow this functionality? I have Muscular Dystrophy and want to use my HTC Evo 3D with the specialized HID USB mouse emulator that's integrated into my wheelchair. This is how I control my desktop PC.
Because I also use the mouse emulator and voice recognition the battery life of the phone isn't that great. I would like to power the phone with a cigarette lighter adapter plugged into my chair.
Thanks!

IT doesnt work on HTC phones. I tried a gew hours ago, since nkbody knew i was forced to buy myself a usb otg cable. Plugged it in the Sensation, and a logitech G35 on the other side. no result, tried with regular usb stick still no result
Sent from my HTC Sensation Z710e using XDA Premium App

What file system are you guys using?
I can't seem to get the phone to read exFAT.
Also can't find ext4 drivers for Windows
FAT32 is not an option since the movies I want to watch are over 4gb.

derkgates said:
Would anybody be able to help make a cable to allow this functionality? I have Muscular Dystrophy and want to use my HTC Evo 3D with the specialized HID USB mouse emulator that's integrated into my wheelchair. This is how I control my desktop PC.
Because I also use the mouse emulator and voice recognition the battery life of the phone isn't that great. I would like to power the phone with a cigarette lighter adapter plugged into my chair.
Thanks!
Click to expand...
Click to collapse
I'll try to do some research and tests and try to make something to help you and other people with similar needs!

I can mount ntfs with "USB Host Controller v0.44" app and 3.0.8-franco.Kernel R140 kernel.

Inserting multiple USBs at the same time: possible?

Hello there, fellow members!
Last night with a friend we were discussing some stuff about the Ouya, and the next idea came into my mind: I would only purchase one because of the emulators and being able to connect it via HDMI. But wait, I can actually do that with my phone. What if I plug in an HDMI cable, a PS3 joystick and the charger into my ZL? It would be a nice way to play PS1 or N64 games. But yes, then I realized that the phone only has one USB entrance, which is the same for any of the above mentioned pheripherals.
So, what brings me here is the following question: are there any USB adapters with multiple slots compatible with our phone? If I tried a generical PC one, would it work? Or using three different functions in a hole that's made to support one at a time could damage the phone?
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One of these, for example (combined with a mini-usb adapter on the cable), would work?
Thanks in advance, and best regards =)

I don't know if our ZL can handle multiple USB devices. But if you want to try it, you would need a USB Hub with external power supply because I don't think that our phone can put out that much power.

I think the Ouya has several device-exclusive games, but the ZL can play indeed Android games and emulators.
However, I think the only way to do what you have in mind is to:
1) Connect the PS3 'joystick' via Bluetooth. That way, you won't have to use the MicroUSB port.
2) Have an MHL cable for the MicroUSB to HDMI.
However, with point #2, powering the device will still be uncertain. The MHL (2.0) specs allow for powering your device when connected, but
A) Your TV will have to support MHL as opposed to HDMI.
or
B) Your MHL-to-HDMI adapter works as backward compatible HDMI, and requires external power to work.
In both cases I don't know whether the phone will charge and if it even does, whether the power will be sufficient to compensate for the (added bluetooth) power usage of the device.
It is for this 'contraption' that I initially wanted a device with both MicroUSB and MicroHDMI port, so more connectivity would be possible.
Anyway, I ordered all accessories I need to test this (but I don't have an MHL-supporting TV), expect info on this as I find it out.

bouvrie said:
I think the Ouya has several device-exclusive games, but the ZL can play indeed Android games and emulators.
However, I think the only way to do what you have in mind is to:
1) Connect the PS3 'joystick' via Bluetooth. That way, you won't have to use the MicroUSB port.
2) Have an MHL cable for the MicroUSB to HDMI.
However, with point #2, powering the device will still be uncertain. The MHL (2.0) specs allow for powering your device when connected, but
A) Your TV will have to support MHL as opposed to HDMI.
or
B) Your MHL-to-HDMI adapter works as backward compatible HDMI, and requires external power to work.
In both cases I don't know whether the phone will charge and if it even does, whether the power will be sufficient to compensate for the (added bluetooth) power usage of the device.
It is for this 'contraption' that I initially wanted a device with both MicroUSB and MicroHDMI port, so more connectivity would be possible.
Anyway, I ordered all accessories I need to test this (but I don't have an MHL-supporting TV), expect info on this as I find it out.
Click to expand...
Click to collapse
The concept is interesting but the problem with the ZL is the battery life, if the battery will not be able to get charge, you only be able to use it for around a hour or hour and half playing games or watching videos from a 100%.
Sent from my C6506 using xda app-developers app

I hooked up my ZL to my monitor yesterday, using MHL to HDMI. Output worked when I supplied power to the adapter, sourced from the monior's built-in USB hub. The ZL was charging while the MHL cable was connected.
I streamed a 1080P MKV movie over local WIFI , other services(data connection/bluetooth/NFC) were turned off. After the movie was done, I checked the power usage and the battery level had remained pretty much the same throughout the movie.
So I think with MHL to HDMI, the device is only able to retain its battery level, rather than charging it to full. Having said that, the screen was turned on the entire time throughout the output; if I can turn off the screen while viewing, this could save the battery some more.
I'll perform more tests this weekend; I want to use Bluetooth as input device (I've somewhat given up on having Infra Red controls) and have audio played through the ZL speaker rather than over HDMI to my monitor (that has no speakers built in). Ideally I would want to combine this with my USB Host / OTG 4-port USB hub, but alas MHL and USB Host are mutually exclusive on this device.

Nexus 2013 Timur's kernal and 4port USB hub slow charging

Hello, so I have always had this problem of my phone charging so slow while using the 4 port USB I have installed in my car.
Here is the Hub I have: 4 port usb hub: StarTech.com Mountable 4 Port Rugged Industrial USB Hub (ST4200USBM)
I have used my Nexus 7 (2013) for GPS and if using it for long period of time I have noticed that the battery will actually go low even with it constantly charging while driving.
Here is the Cigarette Lighter car charger that I use: PowerGen® 4.2Amps / 20W Dual USB Car charger Designed for Apple and Android Devices - Black
I have it just plugged straight into the cigarette lighter with the USB cable going into the NA (Not Apple) port.
(A note, I had to use a USB extension cable to get the USB cable to reach the OTG cable.)
AmazonBasics USB 2.0 Extension Cable - A-Male to A-Female - 3.3 Feet (1 Meters)
Now I have the USB Hub wired from the 12V cigarette lighter, and I use 3 USB ports from it to either Charge 1 or 2 phones, and then have a USB Drive in the other so I can play music, watch a movie etc on the Tablet.
I went with the powered 4 port USB HUB so I could charge my phone(s) while driving but it is basically worthless for doing that I don't understand why. On my commute home which is almost an hour drive My phone will barely charge 10-15% no matter what level I started charging it at.
The Nexus 7 tablet will usually stay full charged if just doing normal stuff like playing music, surfing the net. But if I use heavy power program like GPS or Play a movie it will drop and it will say Charging but it will get low until I stop those programs and let charge back up.
I am using the latest version of Timur's kernel.
My concern is, I plan on driving a long distance in a month and would like to not have to worry about my GPS killing my Tablet Battery and getting stuck, and would like to be able to power up the Cell Phones so not having to stop at some store etc to try and find a charging station.
Thanks for your time. I am pretty open as to what I can do, so if you guys have tried and true solutions please let me know.
If you need to know my vehicle it is a 1998 Mitsubishi Eclipse GSX.

So...why not get a 4 port USB charger that actually delivers 2.4A to each individual port instead of trying to charge 3 devices off of a single 2.4A port?

Well I guess I thought this USB Hub was supposed to supply enough power to all ports.
I need the hub to be able to charge my devices as well as pass data to and from the Nexus 7.
This hub will allow for data exchange like I want, but has issues charging.
Is there a USB HUB that you would recommend?

I was hoping to achieve the same thing as you. I have a 3amp buck converter hooked up to my USB hub that I was hoping to charge my phone with through the hub.
The reason it won't work is because the data pins are not shorted so the phone will only charge at 500ma. Don't try shorting the data pins on the hub either because who knows what effect that could have on the hub.
Sent from my Nexus 6 using XDA Free mobile app

Just wanted to check and see if anyone has found a good USB HUB that supports 2.4A to each port.
I'm sure other people have found some sort of solution to be able to charge their devices fast and use it for data to Nexus 7.

What ma are you pulling in pem ?
What otg cable ?
Right now i have a 7 port hub
I can run waze and obd apps with wifi ,gps bluetooth on and i never drop below 100......Ever
How you should more or less have it setup should be like this
Good otg cable
12v - 5v converter powering the nexus throught otg cable
Second converter powering hub .
This otg cable is really good
https://www.amazon.com/gp/aw/d/B00N...687&sr=8-1&pi=SY200_QL40&keywords=otg+y+cable
...

Do you mean your nexus 7? I was having some issues with it staying full powered I recently switched out the Cigarette lighter charger for it and havent had any issues with the Nexus staying charged.
Now I just want to figure out how to charge my devices through the HUB and be able to do data transfer at same time.
My hub is powered from 12v source wired directly to it.

Data transfer from a hard drive ?
Your tablet should charge and use devices at the same time ....
What otg cable do you have ?

Right Angle Micro-B to Micro-B Female - 5 wire
Micro USB Host OTG Cable with Micro USB Power for Nexus 7 Galaxy S III & Galaxy Nexus
PowerGen 4.2Amps / 20W Dual USB Car charger Designed for Apple and Android Devices USB
StarTech.com Mountable 4 Port Rugged Industrial USB Hub (ST4200USBM)
Fosmon Snap-On Hard Rubber Protector Cover Case for Google Nexus 7 - Black
Behringer UCA222 Audio Interface
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Timur's kernel is important (otg+charge)!

I am looking for a hub that provides enough power to the USB ports to be able to charge more than just the tablet.
Example 2 people in car. Both need to charge their phone. Both plug into hub both get 2.1amps, AND 1 wants to play music from phone to car tablet. Should be able to do all from 1 plug, charge at 2.1 and play music from phone.
THis is the hub that I am thinking of but it only supplies 900mA. This is not enough to charge phone.
StarTech.com Mountable 4 Port Rugged Industrial SuperSpeed USB 3.0 Hub (ST4300USBM)
Does anyone have a better hub? Or some other method that I can do to get the 2.1 amps to each port, and be able to still transfer data over that hub?
Shoot worse case I am even willing to have a hub that has the 2.1amp for a couple of ports, and the rest are the 900mA. That way at least people not trying to stream can still get their phone charged quickly.
I don't know the method to go from a regular DC power cord to a car power but I will follow instructions if anyone has some.
Thanks. I am sure I am not the only person that is interested in this.

Internal microphone Issue when using Type C Adapter

Recently purchased the SM-N975U t-mobile variant. I begrudgingly purchased a type-c to 3.5 aux adapter to use my phone in my car for music.
I have the google brand adapter (not sure what it is called or if there are different types)
I noticed now when the dongle is plugged into my phone the microphone stops working on my device. I have to unplug the dongle to get the microphone on my device to work again which makes taking a call while driving a bit difficult.
Running through a few different diagnostics the phone is recognizing the aux adapter (google inc. Headphone adapter)
I'm assuming the device is attempting to use the headphone adapter as a microphone source (for headphones with an in-line mic). But my cars aux setup definitely does not have a microphone.
I've looked all through the settings on the phone for some solution as well as looking online but I have found nothing. I haven't been able to find anything online for anyone experiencing my same issue and I'm wondering if it might be an isolated issue with my device or maybe the specific adapter I have.
Does anyone have any ideas how i can keep the internal mic enabled while an aux adapter is plugged in?

I'll try this in my car. I didn't want a dongle so I simply bought a 3.5mm to USB C cord. Not sure if it matters.

I don't think it is possible without the software having the option. It is not just a headset dongle. The phone is feeding the audio to the USB C connector and looking for mic input from there as well. Those adapters have both the audio out and the microphone connection so you can just plug in any standard 3.5 mm earbuds or headset with a mic and make phone calls. It is similar to wanting the phone mic to work if you plugged a 3.5 mm headset into a 3.5 mm jack on a phone with a 3.5 mm jack. Manufacturers just design it so that the audio out and mic goes through that port when something is plugged in.
You may have to try a speaker and mic splitter cable with a lapel mic or something.
Also note that the Google adapters have a DAC chip in them. All of the adapters and a USB C headset that I had purchased for my Pixel 2XL work with the Note 10+. Except on one adapter the mic works for calls, but not for trying Bixby. That's the oldest adapter I have, so maybe it is only partially compatible.
The only other type of USB C to 3.5 mm adapter type that I am aware of does not have the DAC chip in them. If you look on, say Amazon, they will usually say not compatible with Pixel 2 or 3. Also sometimes will say not compatible with Essential phone, and a few others. If the price is really low, as in much less than $10 each they are likely not compatible. But again, it isn't the adapter that is the issue.

PsiPhiDan said:
I'll try this in my car. I didn't want a dongle so I simply bought a 3.5mm to USB C cord. Not sure if it matters.
Click to expand...
Click to collapse
Does the 3.5mm to type C cable let the phones microphone work still when its plugged it? I might have to try this.

AnubisYT said:
Does the 3.5mm to type C cable let the phones microphone work still when its plugged it? I might have to try this.
Click to expand...
Click to collapse
Yeah actually, it works fine. I just asked the Google Assistant for directions and it gave them to me without a problem.

I am having the same issue. I have used multiple adapters and none of them let the mic work right. It seems that the mic works for the ok Google command but that's it. Google can pick up the first command and not the second. This issue is so frustrating! I have the unlocked note 10 plus with the Google usb c dongle.

Brootalmaster said:
I am having the same issue. I have used multiple adapters and none of them let the mic work right. It seems that the mic works for the ok Google command but that's it. Google can pick up the first command and not the second. This issue is so frustrating! I have the unlocked note 10 plus with the Google usb c dongle.
Click to expand...
Click to collapse
I ended up following the advice of the replies here and went to amazon and picked up a 3.5 aux to usb C cable and it works perfectly.
I believe the dongles don't work with cars because the s10 note is recognizing the adapter as a headphone adapter and is looking to use the headphones inline microphone. I'm sure if the car had a built in microphone it could work with it but my car being an older jeep model does not have that. Like someone else mentioned in this thread, trying to use your internal microphone while plugged into a dongle to your car is the same as trying to use your internal microphone while a pair of usb C headphones are plugged in. It wont work.
I really wish manufacturers would continue putting aux ports on their phones but sadly that's just not how things are going to be.
Hope buying an aux to type C cable works for you and solves this problem since it fixed mine.

AnubisYT said:
I ended up following the advice of the replies here and went to amazon and picked up a 3.5 aux to usb C cable and it works perfectly.
I believe the dongles don't work with cars because the s10 note is recognizing the adapter as a headphone adapter and is looking to use the headphones inline microphone. I'm sure if the car had a built in microphone it could work with it but my car being an older jeep model does not have that. Like someone else mentioned in this thread, trying to use your internal microphone while plugged into a dongle to your car is the same as trying to use your internal microphone while a pair of usb C headphones are plugged in. It wont work.
I really wish manufacturers would continue putting aux ports on their phones but sadly that's just not how things are going to be.
Hope buying an aux to type C cable works for you and solves this problem since it fixed mine.
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I have an older car with a 3.5mm aux audio input, and it works with these (the adapter must have DAC circuit included). "Ok Google", Phone calls on speaker in the phone, and also when using the car speakers, all work perfectly (in my case, phone mic always used therefore when in my car).
It's all in the quality of the USB-c to 3.5mm adapter - two items of primary importance, the adapter having a DAC and also handling the lead for the mic properly. The Samsung one is not available in black, so I use this (which works properly):
USB-C to 3.5mm Headphone Jack Adapter, USB Type-C to 3.5mm Adapter Nylon Cable [DAC Hi-Res] Compatible with iPad Pro New 2018,Pixle 2/XL/3,HTC,Samsung S8/S9/Note 8 https://www.amazon.com/dp/B07RMY3V9D/ref=cm_sw_r_cp_apa_i_PjBQDbQYN3YX9
That adapter when used in the car, I use with an extension cable (male on both ends) to connect to the aux input on the dashboard (as in the first picture - the cable has no lead for the mic).
When utilizing with earbuds for phone calls and the like, that same adapter can be used, but in this case the cable for the earbuds includes a lead for the microphone - see the second picture.
Some people have microphone issues in my opinion I believe the adapter has to properly include a DAC but also properly handle whether or not the microphone lead is connected. If no microphone lead connected, then adapter should work such that the phone "understands" there is no mic so the phone mic should be enabled.
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Use Lesser Audio Switch app. It perfectly reroutes your mic audio and resolves all your issues while using USB C adapters.