Sound Woes - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi all,
Anyone face random times where the sound and microphone do not work until a reboot?
Thought it was Google assistant, but faced it again when setting up the car Bluetooth.
It's frustrating!
Currently on eu 9.7.11 ROM (unrooted).
Cheers,
Dave

DaveHTC200 said:
Hi all,
Anyone face random times where the sound and microphone do not work until a reboot?
Thought it was Google assistant, but faced it again when setting up the car Bluetooth.
It's frustrating!
Currently on eu 9.7.11 ROM (unrooted).
Cheers,
Dave
Click to expand...
Click to collapse
Yeah, same problem here. Had it when connected to bluetooth car audio afterwards sound wouldn't work anymore.

Robin488 said:
Yeah, same problem here. Had it when connected to bluetooth car audio afterwards sound wouldn't work anymore.
Click to expand...
Click to collapse
It's frustrating, as I have to reboot but always wonder when it's going to randomly appear again!

DaveHTC200 said:
It's frustrating, as I have to reboot but always wonder when it's going to randomly appear again!
Click to expand...
Click to collapse
It's annoying indeed. I have no solution at the moment. Maybe flash 10.3.15?

i am in 10.3.15, look like the bug fixed, been 3 days without mic and speaker problem.

Currently it's been fine, after a reboot all is stable so I shall see

No, the problem still persist in 10.3.15.

ibenkov said:
No, the problem still persist in 10.3.15.
Click to expand...
Click to collapse
I'm using the Indian 10.3.3.0 and it's been perfect thankfully

Indian has no NFC module. We are using Google pay, so it's mandatory for us.

ibenkov said:
Indian has no NFC module. We are using Google pay, so it's mandatory for us.
Click to expand...
Click to collapse
I can live without NFC but sound I kind of need :silly:

Of course, I've two k20 pro. In one via viper4android, audio compatibility patch and audio modification library succeeded and stabilized one, but still fighting with the second one

ibenkov said:
Of course, I've two k20 pro. In one via viper4android, audio compatibility patch and audio modification library succeeded and stabilized one, but still fighting with the second one
Click to expand...
Click to collapse
With all that installed you find the issue is resolved?

Yes, the phone must be with magisk installed and these modules should be activated. I've found this useful information in one of the threads in the forum.
https://forum.xda-developers.com/k2...-pro-firmware-10-3-8-0-9-6-13-t3939647/page19
Look what wrote Achi92131.

Related

[Q] Bluetooth Car Audio Issues

Hello fellow HTC One members/XDA enthusiasts!
I have owned many phones in the past few years and never had any issues pairing with bluetooth devices until now.
I have a Pioneer X910 in dash head unit in my car and briefly had the audio working (no on screen information) but then it stopped and when I hit play it started playing out of the phones speakers.
It does say that the phone is connected and on the phone itself it sees Pioneer Navi and also in the settings it shows audio enabled.
Now for the life of me I cannot get any music playing over BT in my car. I have yet to try phone calls with it.
BTW I have my phone rooted with OrDroid on it.
Has anyone had this problem or know the solution? I can play music on my BT speaker in my house but not on my Pioneer X910
Any help would be greatly appreciated.
Thanks in advance!
No one is having this issue?
I may have to return this phone if this feature doesn't work...
Also my work email is not being "Pushed" through EAS....really frustrated with such a beautiful phone...
Which ordroid version are you working on?
HTC tweaked some bluetooth things during 1.29.401.5, and every Update some problems disappear...
v3rtex said:
Which ordroid version are you working on?
HTC tweaked some bluetooth things during 1.29.401.5, and every Update some problems disappear...
Click to expand...
Click to collapse
I'm on OrDroid 3.0.0
I un-paired the device today and re-paired, started to work for a few seconds, shut the screen off, it stopped working and now won't play through the speakers anymore.
BTW I'm using N7 music player
gsr519 said:
I'm on OrDroid 3.0.0
I un-paired the device today and re-paired, started to work for a few seconds, shut the screen off, it stopped working and now won't play through the speakers anymore.
BTW I'm using N7 music player
Click to expand...
Click to collapse
I had a similar issue pairing my old EVO 4G with my Ford Sync system via blue tooth. Don't know if this is related but the issue I had was when Sync tried to download my contacts/address book it would choke. Turned out Sync couldn't handle merged contacts. If your Pioneer is trying to download your contacts try disabling it.
still not working. i am now using trickdroid 5.1.0 and it does the same thing.
very frustrating
anyone else having these issues?
trickdroid
gsr519 said:
still not working. i am now using trickdroid 5.1.0 and it does the same thing.
very frustrating
anyone else having these issues?
Click to expand...
Click to collapse
Sorry to see that your going through trouble, I also have trickdroid 5.1.0 and it works flawlessly with my car's bluetooth connection.
i have an alpine detachable with bluetooth.
have you tried reinstalling the rom with a full wipe?
sKrAm_2013 said:
Sorry to see that your going through trouble, I also have trickdroid 5.1.0 and it works flawlessly with my car's bluetooth connection.
i have an alpine detachable with bluetooth.
have you tried reinstalling the rom with a full wipe?
Click to expand...
Click to collapse
Works fine with my Pioneer AVH 2400BT, even displays the Track Info on the head unit. I did notice the audio breaking up when using Tom Tom and listening to music at the same time.
Have you tried disabling wifi on the phone?
GitAlongLilDoggies said:
Have you tried disabling wifi on the phone?
Click to expand...
Click to collapse
Wifi is off.
Maybe I need to try the Revolution HD ROM?
I don't know, I will likely exchange the phone today if this doesnt' work and try my luck...if not I will be moving to the s4
gsr519 said:
Wifi is off.
Maybe I need to try the Revolution HD ROM?
I don't know, I will likely exchange the phone today if this doesnt' work and try my luck...if not I will be moving to the s4
Click to expand...
Click to collapse
Revolution HD ROM might be worth a try, maybe it has a more up to date version of Blue Tooth. Is your Pioneer on the latest firmware? If not it might be worth updating it too.
GitAlongLilDoggies said:
Revolution HD ROM might be worth a try, maybe it has a more up to date version of Blue Tooth. Is your Pioneer on the latest firmware? If not it might be worth updating it too.
Click to expand...
Click to collapse
Yes it is on latest firmware and I was mistaken my head unit is the x930

Sound problem when calling solved by custom ROM?

My friend has a problem with his galaxy s4 active. His microphone and speaker work perfectly when testing with music and audio recording. But when calling someone the speaker is dead silent and the other person can't hear him. I saw a bunch of threads where they reheat the audio IC and so on. He is running android 5.0.1. Now my question is: is this a software problem and can it be fixed by flashing CM? Thanks for any and all replies.
Edit: If you're wondering I know how to flash custom ROMs and have a lot of experience doing that.
I have the same problem, no sound when call via telephone app. Videos and music are prefect to. The best is when I use WahtsApp and call to someone everything is ok. So I think hardware is ok but something is blocking standard telephone application. I reset my phone (wipe) and reload rom but the problem wasn't gone.
I'm still looking for any solution so maybe someone can help.
Tx
Samsung headphones are not working too.
Solution:
http://forum.xda-developers.com/gal...ute-person-t3169864/post62150085#post62150085
And post 7
ungrillao said:
Solution:
http://forum.xda-developers.com/gal...ute-person-t3169864/post62150085#post62150085
And post 7
Click to expand...
Click to collapse
Thanks for the reply I was thinking it is a software glitch considering sound recording still works.
Sent from my Xperia M2 using Tapatalk

bluetooth issues

I am having bluetooth issues where phones tends to forget about the paired devices and I have re pair them all the time.
Is it me or others are having the same issue? And if someone was able to find a solution to the issue?
vikramdhani said:
I am having bluetooth issues where phones tends to forget about the paired devices and I have re pair them all the time.
Is it me or others are having the same issue? And if someone was able to find a solution to the issue?
Click to expand...
Click to collapse
I have same issue.
Mike3161999 said:
I have same issue.
Click to expand...
Click to collapse
Mine seems to have been fixed after updates
I have the same issue with my car
Which N9 version? exynos/snapdragon?
Which software version?
I'm using exynos with N960FXXS2ARK3 and no problems
If you are rooted, install magisk module called libsecure_storage ,it will fix BT pairing issue.
Sent from my SM-N960F using Tapatalk
I don't have this per se, but I have a problem where it will regularly connect a phone/music device (car aux adapter) in only phone mode, and I'll have to disconnect/reconnect twice to get media audio...and even then sometimes it will use the "phone" codec that sounds like CRAP for media. Will have to reboot phone to fix that.

My XZ2 often dropps known Bluetooth devices

Hi all,
I have the issue, that I need to reconnect my XZ2 to my BMW 1series (F20) really often, because it does not autoconnect when the ignition is turned on.
So I need to pair the XZ2 again and again with my car.
Also my BT-Sony Headset is affected.
It seems, that my Phone drops sporadically all paired bluetooth devices.
I noticed that I can bypass this problem with a daily reboot of my Phone. But this shouldnt be the Solution.
Any Ideas? Can someone confirm a Bluetooth problem?
Stock rom. Build 51.1.A.11.51 @ H8266
chero90 said:
Hi all,
I have the issue, that I need to reconnect my XZ2 to my BMW 1series (F20) really often, because it does not autoconnect when the ignition is turned on.
So I need to pair the XZ2 again and again with my car.
Also my BT-Sony Headset is affected.
It seems, that my Phone drops sporadically all paired bluetooth devices.
I noticed that I can bypass this problem with a daily reboot of my Phone. But this shouldnt be the Solution.
Any Ideas? Can someone confirm a Bluetooth problem?
Stock rom. Build 51.1.A.11.51 @ H8266
Click to expand...
Click to collapse
Try using new flasher to reinstall the latest firmware.
But delete the "userdata" file, it would remove your userdata.
I gather root, backuped my stuff with Titanium backup and wiped userdata, too.
Now my smart lock is working again.
Thx Martin. Hope pie fixed it.
I have an odd Bluetooth issue too, lately it's been disconnecting the ear buds while changing streaming apps (i.e. from Tidal to Spotify or Podcast) or when moving between networks, either between access points or from WiFi to cellular data. Just started happening this week. Didn't change anything that I can remember. It's almost behaving like there is a power saving feature enabled which is trying to save on Bluetooth use. Sometimes it'll reconnect on its own and sometimes I have to toggle BT. It's weird.
I also have Bluetooth issue.
I have a Bluetooth weighing scale,my xz2 can connect to it but everytime I sync my scale data the scale app gives me a Bluetooth error, however, I also have a xz and it works well.
And I also have a Sony ear phone(MDR-EX750BT), yesterday I connected it but it didn't play any sounds I had to reboot my phone ,then the issue disappeared. I don't know when the show again.this shouldn't be a Sony quality
Acberry said:
I also have Bluetooth issue.
I have a Bluetooth weighing scale,my xz2 can connect to it but everytime I sync my scale data the scale app gives me a Bluetooth error, however, I also have a xz and it works well.
And I also have a Sony ear phone(MDR-EX750BT), yesterday I connected it but it didn't play any sounds I had to reboot my phone ,then the issue disappeared. I don't know when the show again.this shouldn't be a Sony quality
Click to expand...
Click to collapse
Maybe you need to use this settings:
Acberry said:
I also have Bluetooth issue.
I have a Bluetooth weighing scale,my xz2 can connect to it but everytime I sync my scale data the scale app gives me a Bluetooth error, however, I also have a xz and it works well.
And I also have a Sony ear phone(MDR-EX750BT), yesterday I connected it but it didn't play any sounds I had to reboot my phone ,then the issue disappeared. I don't know when the show again.this shouldn't be a Sony quality
Click to expand...
Click to collapse
Even if updated to Android P?
P fixed all my Bluetooth related issues.
MartinX3 said:
Maybe you need to use this settings:
Click to expand...
Click to collapse
chero90 said:
Even if updated to Android P?
P fixed all my Bluetooth related issues.
Click to expand...
Click to collapse
I updated to Android P and Bluetooth issues seems to be fixed now. : )thx
Acberry said:
I updated to Android P and Bluetooth issues seems to be fixed now. : )thx
Click to expand...
Click to collapse
yeah, ditto. The connection to my Sony WF-1000X earbuds is stable now, with no disconnects like I was getting with the later updates of Oreo.
FYI, I had to wipe my user partition to do the eventual update. the first flash via Newflasher where I kept it intact apparently went bad and messed up my radios and fingerprint scanner. that's the first time I've ever had issues doing that.
Now I am getting Bluetooth problems.
The music has stuttering and normal intervals.
Very disturbing.
I contacted the Sony support.
MartinX3 said:
Now I am getting Bluetooth problems.
The music has stuttering and normal intervals.
Very disturbing.
I contacted the Sony support.
Click to expand...
Click to collapse
with what Bluetooth device?
so far with Advanced 3 and Sony WF-1000x earbuds it's been stable for me. As well as my car connection (Land Rover) and some shower speaker I've been using it with.
eelpout said:
with what Bluetooth device?
so far with Advanced 3 and Sony WF-1000x earbuds it's been stable for me. As well as my car connection (Land Rover) and some shower speaker I've been using it with.
Click to expand...
Click to collapse
ThinkPad T440P with Linux Mint 19 Cinnamon.
I think my T460P with the same OS got the same problem.
Need to test it again.

External Microphone on 3.5MM audio Jack not working - Headphones worked!

Hello Guys,
I been searching alot in the forum and I can't seems to find a solution for this yet. Maybe I got too confuse after reading some threads here.
nevertheless, I just wanted to make sure that my external Microphone would work with the 3.5mm Audio input jack. I have tested the same mic with the correct cable and it works with my 1Plus5T / Samsung Note8 how ever no luck with the K20Pro.
Do I need to root the phone and use Magisk to fix this issue?
I am currently on INDIA Raphaline rom 10.3.5 I believe
please don't shot me guys.
Cheers
Jumundz said:
Hello Guys,
I been searching alot in the forum and I can't seems to find a solution for this yet. Maybe I got too confuse after reading some threads here.
nevertheless, I just wanted to make sure that my external Microphone would work with the 3.5mm Audio input jack. I have tested the same mic with the correct cable and it works with my 1Plus5T / Samsung Note8 how ever no luck with the K20Pro.
Do I need to root the phone and use Magisk to fix this issue?
I am currently on INDIA Raphaline rom 10.3.5 I believe
please don't shot me guys.
Cheers
Click to expand...
Click to collapse
I just received my Mi 9T Pro a few days ago and was researching this. Don't have a mic yet so haven't been able to try it. I guess evidently it will work with Open Camera as there's a setting for that. But I'm trying to see if it works with Gcam mods. I found this video but it's for the Gcam stock app. https://www.youtube.com/watch?v=-cNyep1vADY Please let us know if you find anything.
BCE111 said:
I just received my Mi 9T Pro a few days ago and was researching this. Don't have a mic yet so haven't been able to try it. I guess evidently it will work with Open Camera as there's a setting for that. But I'm trying to see if it works with Gcam mods. I found this video but it's for the Gcam stock app. https://www.youtube.com/watch?v=-cNyep1vADY Please let us know if you find anything.
Click to expand...
Click to collapse
Hi there, thanks very much I wlll take a look.
Jumundz said:
Hello Guys,
I been searching alot in the forum and I can't seems to find a solution for this yet. Maybe I got too confuse after reading some threads here.
nevertheless, I just wanted to make sure that my external Microphone would work with the 3.5mm Audio input jack. I have tested the same mic with the correct cable and it works with my 1Plus5T / Samsung Note8 how ever no luck with the K20Pro.
Do I need to root the phone and use Magisk to fix this issue?
I am currently on INDIA Raphaline rom 10.3.5 I believe
please don't shot me guys.
Cheers
Click to expand...
Click to collapse
I have the same issue. Headphones work but the mic does not. Looks like a defective piece. Did not have time to head to the service center yet
shiwik said:
I have the same issue. Headphones work but the mic does not. Looks like a defective piece. Did not have time to head to the service center yet
Click to expand...
Click to collapse
i read through post ~ need to use magisk to patch it and it would work . I don't want to root the phone . does i am still stock here i really hope is a defective unit. I didn't have a chance to try when I am using chinese firmware
Did anyone solve this?
I just bought this phone and have the same issue.
Major75 said:
Did anyone solve this?
I just bought this phone and have the same issue.
Click to expand...
Click to collapse
Just got my Mi 9T Pro a week ago and just bought a mic the other day but haven't had a chance to try it yet. I'll let you know. I think Open Camera has a setting for external mics. Gcam has a setting that pops up when a mic is inserted, but that's the stock software. Not sure if Gcam mods do. See above for video link.
Just saw this article that says an external mic won't work. Not sure how accurate it is. https://timesofindia.indiatimes.com...ortant-video-feature/articleshow/70339311.cms
Same issue here. Discord with an external mic is not working, but in the miui recorder app it is. Did you try that?
I'm pretty sure its a MIUI bug since one year ago the poco f1 had exactly the same issue and it got fixed via update.
peter0010 said:
Same issue here. Discord with an external mic is not working, but in the miui recorder app it is. Did you try that?
I'm pretty sure its a MIUI bug since one year ago the poco f1 had exactly the same issue and it got fixed via update.
Click to expand...
Click to collapse
Yep. I tried in the recorder app. the external mic doesn't record. complete silence on playback.
My main problem is when i'm using headphones in a call...the other person can't hear me.
Major75 said:
Yep. I tried in the recorder app. the external mic doesn't record. complete silence on playback.
My main problem is when i'm using headphones in a call...the other person can't hear me.
Click to expand...
Click to collapse
Are you talkin about an actually mic? Or a headset?
I was talking about some regular headset with a microphone, if this change anything at all.
peter0010 said:
Are you talkin about an actually mic? Or a headset?
I was talking about some regular headset with a microphone, if this change anything at all.
Click to expand...
Click to collapse
Sorry for the confusion. So my phone Mic is fine. When i plug in my headphones ( Samsung akg s8 ones with a external mic), the phone detects the headphones with external mic but the mic on the headphones doesn't work but I can hear music, voice calls through my headphones. Just the other person can't hear me through the headphone mic. Tried with the recorder app etc. The mic on the headphone doesn't work
I have tried 2 samsung headphones and 1 apple headphones. All with the same issue.
Tried all the headphones on another phone and all the headphones and mic work perfectly.
Does it need specific xiaomi mi headphones to work or something?
Major75 said:
Sorry for the confusion. So my phone Mic is fine. When i plug in my headphones ( Samsung akg s8 ones with a external mic), the phone detects the headphones with external mic but the mic on the headphones doesn't work but I can hear music, voice calls through my headphones. Just the other person can't hear me through the headphone mic. Tried with the recorder app etc. The mic on the headphone doesn't work
I have tried 2 samsung headphones and 1 apple headphones. All with the same issue.
Tried all the headphones on another phone and all the headphones and mic work perfectly.
Does it need specific xiaomi mi headphones to work or something?
Click to expand...
Click to collapse
No, definitely not. Mine is some old one from oppo find 7, I think.
Thats weird that it doesn't work for you in the recorder app though, cause for me it does. Its just voicechat applications like discord for example which don't work.. and it really annoys me.
We should definitely report it to xiaomi via the feedback section at the bottom of the settings.
edit: seems like it is a known issue already
https://forum.xda-developers.com/k20-pro/help/issue-discord-k20p-mi9tp-t3965007
peter0010 said:
No, definitely not. Mine is some old one from oppo find 7, I think.
Thats weird that it doesn't work for you in the recorder app though, cause for me it does. Its just voicechat applications like discord for example which don't work.. and it really annoys me.
We should definitely report it to xiaomi via the feedback section at the bottom of the settings.
Click to expand...
Click to collapse
Ahh is my unit defective? Idk if i should return it.
Major75 said:
Sorry for the confusion. So my phone Mic is fine. When i plug in my headphones ( Samsung akg s8 ones with a external mic), the phone detects the headphones with external mic but the mic on the headphones doesn't work but I can hear music, voice calls through my headphones. Just the other person can't hear me through the headphone mic. Tried with the recorder app etc. The mic on the headphone doesn't work
I have tried 2 samsung headphones and 1 apple headphones. All with the same issue.
Tried all the headphones on another phone and all the headphones and mic work perfectly.
Does it need specific xiaomi mi headphones to work or something?
Click to expand...
Click to collapse
I have been hearing different views from various folks on this forum. I have the Indian version of the K20Pro and i can confirm that the mic of an external headset (earphones or headphones) does not work. I can however listen to music and also hear the opposite person talk where i receive a call. However the opposite person cannot hear me - which is indicative that the mic does not work (or there is an issue)
On the positive side though, i flashed Revolution OS and this problem seems to have been fixed. I can now use any earphones (or headphones) to take calls and the opposite person can now hear me. I am doing an entirely clean flash (fastboot) now to check if that works on the latest Indian version too.
shiwik said:
I have been hearing different views from various folks on this forum. I have the Indian version of the K20Pro and i can confirm that the mic of an external headset (earphones or headphones) does not work. I can however listen to music and also hear the opposite person talk where i receive a call. However the opposite person cannot hear me - which is indicative that the mic does not work (or there is an issue)
On the positive side though, i flashed Revolution OS and this problem seems to have been fixed. I can now use any earphones (or headphones) to take calls and the opposite person can now hear me. I am doing an entirely clean flash (fastboot) now to check if that works on the latest Indian version too.
Click to expand...
Click to collapse
I have the Mi 9T global version with stock glonal MiUI 10.3.11 and I have the exact same issue as you're having. I'm going to try some xiaomi headphones and see if this fixes the issue. Thank you for your response by the way.
Major75 said:
I have the Mi 9T global version with stock glonal MiUI 10.3.11 and I have the exact same issue as you're having. I'm going to try some xiaomi headphones and see if this fixes the issue. Thank you for your response by the way.
Click to expand...
Click to collapse
I suspect it is an issue with the global firmware. If may want to try some of the Chinese ones to see if that has solved this issue as most of the custom ROMs are based on the Chinese FW
Edit:
I have been running Custom MIUI with Chinese FW so far. Just did a clean fastboot of the indian version 10.3.5.0 and guess what - the mic works for calls!! Very strange as it definately did not work for me out of the box
shiwik said:
I suspect it is an issue with the global firmware. If may want to try some of the Chinese ones to see if that has solved this issue as most of the custom ROMs are based on the Chinese FW
Edit:
I have been running Custom MIUI with Chinese FW so far. Just did a clean fastboot of the indian version 10.3.5.0 and guess what - the mic works for calls!! Very strange as it definately did not work for me out of the box
Click to expand...
Click to collapse
Did you do a factory reset or something? I'm not very familiar with rooting and running fastboot so i dont feel comfortable flashing any firmwares. I'm a noob. i know :laugh:
Some feedback, but probably not what you want to hear:
Had a similar problem with Signal - old headset worked fine on HTC-U11+ stock, on the K20 pro there was no microphone (callee said no sound at all) even though headset with mic was detected. A temporary solution was to partially pull out the plug which caused the K20P to show headphones only headset connected and I guess it used the phone mic.
However I purchased a Xiaomi headset which worked fine from the start, detecting headset with microphone and callee said mic quality was much better. Seems they may have pulled an Apple move and used non-standard pin connectors
Currently on 9.9.6 Xiaomi.eu ROM, K20Pro CN version (purchased in China) 8/128Gb version.
murakh said:
Some feedback, but probably not what you want to hear:
Had a similar problem with Signal - old headset worked fine on HTC-U11+ stock, on the K20 pro there was no microphone (callee said no sound at all) even though headset with mic was detected. A temporary solution was to partially pull out the plug which caused the K20P to show headphones only headset connected and I guess it used the phone mic.
However I purchased a Xiaomi headset which worked fine from the start, detecting headset with microphone and callee said mic quality was much better. Seems they may have pulled an Apple move and used non-standard pin connectors
Currently on 9.9.6 Xiaomi.eu ROM, K20Pro CN version (purchased in China) 8/128Gb version.
Click to expand...
Click to collapse
That wouldn't explain why it is working on mine with some random OPPO headset.
peter0010 said:
That wouldn't explain why it is working on mine with some random OPPO headset.
Click to expand...
Click to collapse
Could you please clarify as your last post states that voice comms apps, like discord did not work?
peter0010 said:
No, definitely not. Mine is some old one from oppo find 7, I think.
Thats weird that it doesn't work for you in the recorder app though, cause for me it does. Its just voicechat applications like discord for example which don't work.. and it really annoys me.
https://forum.xda-developers.com/k20-pro/help/issue-discord-k20p-mi9tp-t3965007
Click to expand...
Click to collapse
For me it was Signal which was not working with the external headset mic, but then worked perfectly when I used the Xiaomi one. (not an advert, yet I really do like the Xiaomi headset (in-ear) and I am not unhappy that I purchsed it)
Also, and its been a long while since I had the Find 5, I seem to vaguely recall there was similar issues with headsets & micrphones on the early Find phones - maybe Xiaomi and Oppo use the same jack supplier?

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