yashsingh1/xdaforums huggingface dataset:
[Xiaomi Poco X3 NFC Questions & Answers] veniciusgp:
I have the same problem with my poco x3 12.0.7 Global

I made a comparison with my Mi Note 3 both connected in the same router and both in the same distance

At this distance of the test the Mi Note 3 had a much better download performance. The test was done for several times always with the same result.

Test done using the speed test app on the same server.

I also did a download / upload test on the LTE network using the same Sim Card and the Mi Note 3 had a much higher upload performance.

I hope this is a ROM problem and not a hardware problem.

It is unacceptable for a recent cell phone to perform much less than a 4-year-old cell phone.
[Xiaomi Poco X3 NFC Questions & Answers] fjojofr:
Same for me ( ROM 12.0.7 EU )

my redmi note 7 is much better than the POCO X3 in the same conditions.

I had to force the POCO in 3G to avoid loss of connections.
[Xiaomi Poco X3 NFC Questions & Answers] denduzzo:
On the network I read that several people have solved it this way:

- "setting"

- "sim card & mobile connections"

- "access point name"

- click on the option on the right and scroll down on "bearer" option

- unselect "unspecified" and select all the other.

Could you tell me if it works for you?
[Xiaomi Poco X3 NFC Questions & Answers] paqqno:
I can't make any changes in this acces point, all of it, including "bearer" is in grey color, I tried to make a new acces point with same settings just like it is in this default but it doesn't work like that at all.
[Xiaomi Poco X3 NFC Questions & Answers] fjojofr:
i tested these changes in "access point name" but the problem is the same (n)

but thanks anyway
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
I was told by Xiaomi support to wait for next update when the phone was at 12.0.4 for the fix. Yesterday I got 12.0.7 and the problem is still there.

Being very close to telecomunication engineers that can log the behaviour of the phone in the network, they noticed that on ¨not optimized nodes¨, the phone tends to make a lot of intraLTE hangover, which is not good. This is totally a software issue. I hope you guys send feedback to Xiaomi as well so the complain has more impact.

I wrote back to Xiaomi and they told me to wait for the next update. I will keep you posted.

The APN thing doesn´t work for me.
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Still having the same problem, any solution found?
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
I invite you to read this page, mostly the part of network behaviour.

Undoubtely this phone is weak in terms of 4G signal reception.

The question is, can this be fixed via software? Gurus?

Product reviews, travel tips and stories

I test products, find good deals, travel and share my experiences.

www.laurentwillen.be
[Xiaomi Poco X3 NFC Questions & Answers] order_66:
My poco x3 nfc is basically dead in the water with no signal reception at all.

If I flash to stock then everything works fine, I flash arrow os and it's still fine, but 4-5 days later LTE switches to 4g, then the next day the signal starts to drop entirely until I have no signal at all.

Same result with other rom's, good for a few days then starts to decline, update the rom or flash to a different rom makes no difference.

Wiping cache and dalvik doesn't help, only flashing to stock fixes it.
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Hello everyone. Being almost obsesed with this I am subscribed to a lot of forums, and telegram groups related to POCO X3. Yesterday a POCO enthusiast having the same problem we are having, told me that he fixed the problem by flashing the stock rom via fastboot. This ROM is bigger than the recovery one.

Yesterday I request to unloock the bootloader. As soon as it gets unlocked I will try this solution.
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
I will try using a single phisical line today. At least having two and disabling one the problem is still there.
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Testing with a single SIM. The problem is still there
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
It is almost unusable. And I am talking about taking minutes for a single whatsapp message to be sent
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Yesterday I finally unlocked my Poco bootloader and I could flash Stock Global ROM via Fastboot. To realize if there was any difference in terms of connectivity I needed to get home, there signal is bad and mobile data is terrible, almost unusable with POCO X3. At first nothing has changed and I felt terribly disappointed. BUT

Next day!!!! Tadan....there was a significant change. Unfortunately I could´t test too much because I needed to go to work, where there is no problem. Now I can´t wait to go back and try. But in the meantime. Is there any settle in time required by the ROM/Radio/Kernel...to get the best connectivity? Was it a placebo effect?
[Xiaomi Poco X3 NFC Questions & Answers] Freed431:
This is good news! If the problem is solved, please tell us when you get home.
[Xiaomi Poco X3 NFC Questions & Answers] cabarella:
Yes thank you let us know, I'm having the same problem and looking for a solution to solve it
[Xiaomi Poco X3 NFC Questions & Answers] paqqno:
dude, you are our last hope or something
[Xiaomi Poco X3 NFC Questions & Answers] madmanwild:
I'm joining, I also have this problem. MIUI Global 12.0.7.
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Hello everyone.

Before giving a solution that has worked for me, I would like to talk about my context. I live in a city, that has centainly a low density of radios, so it is nomal that inside the house the 4G signal is very low.

With that being said I realize that my POCO was more sensitive than for instance an iPhone 6S, that, with the same signal behaves MUCH better. At this scenario, even going out where signal is stronger, data was almost unusable in 4G.

Leo, a very smart guy from a Telegram POCO channel, told me to fix this problem, unlocking the bootloader and flashing Global Stock ROM via fastboot, and I did it. You know what? It fixed the problem. The signal is not stronger, but the experience is totally different, as it should.

It is hard to say that this solution is one size fits all but at least in my case it works, it is not a placebo effect. The bennefics are REAL.

Hoping you guys has the same effect!

Regards.
[Xiaomi Poco X3 NFC Questions & Answers] cabarella:
Great thanks, since I'm not an expert about modding, can you link me a guide/tutorial on how to unlock the bootloader and flash the global stock rom?
[Xiaomi Poco X3 NFC Questions & Answers] paqqno:
Has anyone else tried this method what yasser_fernandez described?
[Xiaomi Poco X3 NFC Questions & Answers] yasser_fernandez:
Hello everyone. After some days with the new ROM I can still say it was better than before, but still far from other phones around. I am starting to think the real issue is hardware related.
[Xiaomi Poco X3 NFC Questions & Answers] Poluux:
Just got the phone, 4g is very bad compair to the Samsung s10. It's sometimes more than 4 times slower in download : 100mb/s for the s10, 20mb/s for the poco), upload is even worse, not even a mega (indoor at the exact same place). Anyone found a fix? I'm full stock with the latest update.
[Xiaomi Poco X3 NFC Questions & Answers] veniciusgp:
This problem is appearing to be poor quality of the antenna. I think it is a problem that has no solution with software fix. I have already compared poco x3 with several other cell phones from different manufacturers and the poco always performs worse whether 4g/4g+ or wifi.
[Xiaomi Poco X3 NFC Questions & Answers] Poluux:
Thanks for your reply. It's really too bad so I'll send it back tomorrow
[Xiaomi Poco X3 NFC Questions & Answers] WTTSS:
Hello, I had the same problem as you, I looked in several forums and I watched several videos said to be 100% effective without success, so I decided to go through all the network settings of the phone to find a solution, and that ended up paying off, I changed the network mode through the menu * # * # 4636 # * # * on the call keypad, I put illustrations below to better understand, you just do a google search to find the right combination for your operator and your region, for me in any case it works, no more cut in 4G during a call, more speed, here is hoping that it serves you as well as 'to me. Have a good day.
[Xiaomi Poco X3 NFC Questions & Answers] pnin:
For some unknown reason, I'm now facing a similar problem in Xiaomi.eu v12.0.7.0.

At first, I supposedly had 4G connections but couldn't make any calls -- a message popped up saying "Can't place call because there are no calling accounts which support calls of this type".

Looking for a solution, I cleared data and cache for the qcrilmsgtunnel system app and rebooted, after which I was able to make some calls, but lost 4G/LTE -- so I have no 4G sign anymore next to mobile connection.

"Phone Info" (*#*#4636#*#*) takes some time to start, at first I assumed it wasn't working at all, but it eventually showed up.

"Mobile Radio Power" and "Enable DSDS" are the only buttons enabled, "VoLTE Provisioned", "Video Calling Provisioned", and "Wifi Calling Provisioned" are all grayed out.

Phone info preferred connection was set to "LTE/TS-CDMA/UMTS" at first and I changed it to "LTE/CDMA/UMTS auto (PRL)" but this change doesn't seem to stick after reboots.

Any help/pointers appreciated.

​
[Xiaomi Poco X3 NFC Questions & Answers] pnin:
Duh! Problem solved.

Put the SIM card in another device and yet the problem persisted; so I went to the service provider shop with it...

Turns out they had blocked my data access (but not calling, believe or not) without notifying me -- all for lack of payment.

Everything settled. Damn leeches. 😈
[Xiaomi Poco X3 NFC Questions & Answers] Hakkinen3K:
Ok. I read some information in telegram groups, Google, youtube. Poco x3 nfc has a serious problem with connectivity affecting mobile network (4g, 4g+) and maybe wifi too. Change some settings could fix the problem but is temporary. Xiaomi is aware of the problem affecting a lot of devices, A LOT! and the promise to release an update because the fault is probably/only software but until now it has not been fixed (also battery drain) and probably it won't maybe with android 11 but i don't think so. There's also a physical (hardware) info about the antenna (s) position or simply bad quality or something is interfering inside de device.

Poco x3 nfc is a good phone but meanwhile battery last all day, no problem for me.
[Xiaomi Poco X3 NFC Questions & Answers] SkaboXD:
Caution: This solution involves modifying EFS partition (modem), so be careful!

You can try adding Advanced LTE aggregations and enabling EVS codec solution for fixing 4G & 4G+ network switching.

I didn't had any of the problems described above, but I got better speeds when 4G+ is connected. I tried it myself and it works wonderfully.

Original post: https://4pda.ru/forum/index.php?showtopic=1003842&st=12180#entry101713197

Needed files + instructions on how to do it for people who don't use 4pda: https://drive.google.com/file/d/11K0NbzcJB-SL2amudRJwYChm3aqnAdM7/view?usp=sharing

This solution will stay always on any ROM.

Cheers!
[Xiaomi Poco X3 NFC Questions & Answers] SkaboXD:
I would say bad position because Redmi Note 10 Pro has the same modem and it has much better signal.

Glass backs are only slightly affecting signal, but there is no metal that can make it worse.

In other way, plastic doesn't interefere signals, but aluminium frame can cause issues along with bad modem position on Poco X3. (for example, modem is placed in the corner of the phone which is more surrounded by aluminium frame)

There also can be a possibility that Redmi Note 10 Pro uses the newer revision of Snapdragon 732G where it has the same modem which fixed signal issues (unlikely imo).
[Xiaomi Poco X3 NFC Questions & Answers] Monacophil:
Hello,

I just bought a POCO F3 a couple weeks ago on the European Xiaomi site and I have exactly the same problem (on 2 different French networks).

Loss of connection, sometimes for 5 to 10 seconds on both sims. Number of times varies but at least 10/15 times a day.

All this story starts to be very frustrating.
[Xiaomi Poco X3 NFC Questions & Answers] a0a0a0:
Any news? Are the custom roms improving the connection? It s unbelivable that on rn7 and rn8T I had before the issue was not present. This poco X3 is s***t due to this problem
[Xiaomi Poco X3 NFC Questions & Answers] cabarella:
I solved the problem by changing sim and therefore operator
[Xiaomi Poco X3 NFC Questions & Answers] Noter2017:
Connection is perfect for me on ArrowOS but I replaced my SIM card for a new one when I got the phone
[Xiaomi Poco X3 NFC Questions & Answers] ahmadsaad0303:
You have to change your home location bcz near your home their is a jameer or what
[Samsung Galaxy Note 10+ Questions & Answers] pip235:
I am having issues with text messaging, and only text messaging at this time.

- I CANNOT receive text messages when my mobile network is on "AUTOMATIC" or "LTE/CDMA"

- I CAN receive text messages when I am in "CDMA ONLY"

- I CAN seem to send text messages on any network setting.

- Data seems to be working normal.

- I am unsure of incoming and outgoing calls, but seems to be normal.

Things I have done to combat the situation.

- Many "NETWORK RESETS"

- Had Sprint/T-Mobile do "NETWORK RESETS" on their end.

- Replaced SIM card and programmed it as needed with Sprint Tech Support and T-Mobile support.

- Booted and ran several days in "SAFE MODE" to eliminate any app issues.

- I have tried different texting applications

- I have taken my phone to an authorized Samsung dealer, UBreakIFix, and they went through the phone and say that the phone is in perfect condition and everything is working as it should.

I have done everything short of doing a factory reset.

Original purchase date is August of 2019.
[Samsung Galaxy Note 10+ Questions & Answers] TheMadScientist:
Problems like these sometimes can be hard to pin down.

Could be needing a reprovision on your account. Bands not being selected. Blacklisted imei in some shape or form. The device in say like nam programming may be set to read CDMA based instead of gsm based or sim. My s8 had this issue when I went from CDMA to gsm.

Could be incorrect apn settings.

But it seems more like a carrier issue to me as everything else seems to be going ok for you. I would reach out to my carrier and aim for a account and device sim reprovision. Also doesn't Verizon still use that *228 or whatever to do over the air programming and roaming update. Maybe try that too
[Samsung Galaxy Note 10+ Questions & Answers] Village_Idiot:
Try the LTE/GSM/UMTS setting and see what happens. I have a feeling that more people like you are going to be having problems because of the Sprint/T-Mobile merge. If possible, you should take it to a Sprint/T-Mobile store and see what they can do. They may tell you to do a factory reset. Because Sprint was CDMA/LTE and T-Mobile was GSM/LTE you may need to factory reset to connect to T-Mobile's networks as Sprint's gets shuttered.

He's a Sprint/T-Mobile subscriber. Any Verizon info won't help.
[Samsung Galaxy Note 20 Ultra Questions & Answers] ekerbuddyeker:
They are essentially the same device, just different radio bands.

For some reason we aren't getting any updates. Still stuck on ATH1
[Samsung Galaxy Note 20 Ultra Questions & Answers] dublinz:
Indeed, interesting question hope someone can shed some light on subject
[Samsung Galaxy Note 20 Ultra Questions & Answers] inningsdefeat500:
https://xdaforums.com/showpost.php?p=83451937&postcount=3
[HTC Excalibur] hawee:
im running 6.1 and when i connect my phone to my computer it wont sync anymore. it just keeps trying to sync and it wont sync.

help pleaseee
[HTC Excalibur] gixxum:
to be honest...for a while it happened to me. i would plug it in, all the bells and whistles went off, then it would say it couldnt sync. yet i was able to use activesyncs file explorer to get to the phone. no idea why.

i had to reflash my phone to make the guide a few weeks ago, and it hasnt happened since.

http://xdaforums.com/search.php?searchid=15234590

might want to browse there a bit..
[HTC Excalibur] Mikey:
read this, it's in the settings panel (last panel, if not hidden)
[Android Head-Units] ojerez01:
I have a Junsun V1 Pro unit and when I make a bluetooth phone call they tell me that they hardly hear me. If I am with the car stopped, something they listen to me. If I'm on the go, there's no way they'll hear me well. I do not know what solution you can have or if you can put an external microphone.

My car is a Seat León with standard bluetooth installation. I don't know if I could use the car microphone in any way. I think the car microphone cable goes to the radio, but I have nowhere to connect it to the Junsun equipment. Let's see if someone can help me.

Thank you
[Android Head-Units] TorstenH:
Junsun offers a second wiring harness which allows a lot of additional connections. E.g. for AUX in and to connect a amplifier. One of the connections is a 3.5 mm mono jack for a microphone. You can create an adapter to connect the Oem mic of your car.
[Android Head-Units] PETEJAN:
I have exactly the same problem with this head unit.

Microphone (built-in) is virtually useless, my unit came with an external mic (free gift) which I have connected as you suggested using the second harness.

The problem is this is no better.

Checking the system with 'mictests' app it shows a problem with mic volume. My question is how do you access a volume control, I have been unable to find one.
[Android Head-Units] TorstenH:
Don't think there is a setting for microphone sensitivity/volume.

An option could be to remove the internal microphone (seen a lot of tutorials) or test with another mic.
[Android Head-Units] tsoump:
Hello,

I'm facing the same problem. Firstly, I thought that the sensitivity might be the problem but the microphone amplifier app didn't help. Do you think that any update or a custom rom could solve the issue?

Thank you
[Android Head-Units] Shreyas17:
Even I had this mic issue so found a way out attaching a tutorial video

hope that helps
[Android Head-Units] TorstenH:
Thank you for sharing but menus looking completely different to my Junsun V1
[Android Head-Units] tsoump:
Through Ali express, I chatted with the junsun company and they sent me a tutorial for removing the internal mic and put it back. It worked just for a day. I texted back and they sent me an external mic. The first time worked OK, today I had a call and my friend couldn't hear me well. So, now I have a 3.5mm jack to port another mic.

I hope a new good-quality mic solve the problem.
[Android Head-Units] rikdi:
Did you settle with another good quality micro?
[Android Head-Units] tsoump:
Yes. The result with a 6 euro philips (almost the same) mic, is much better. My friends can hear me at least. But, I would suggest a more expensive mic to replace with.

In addition, I would say also that it needs somehow a noise canceling set. I don't know if it's possible.
[Android Head-Units] rikdi:
OBRIGADO PELA RESPOSTA, MAS ISSO É O QUE EU NÃO CONFIEI. MESMO COM UM MICROFONE MELHOR, O SOM É UM RUÍDO.

Os microfones bluetooth originais do carro têm circuitos com uma placa embutida que deve eliminar o ruído, mas você não pode aplicá-lo. Eu tentei, mas não funcionou.
[Android Head-Units] angelhc:
I've the same issue with my junsun v1 pro.

Calls are completely useless, full of noise and the other person can never hear me. I sent a message to the seller and he told me he was sending me an external mic.

I have unsoldered the micro that came in the radio and I have put the new one with the same result. calls cannot be used.

Apart from this there is a small delay like 1/2 second between when I speak and the other person hears it, so the calls are a complete mess.

Anyone knows if it is any solution? If I buy a better micro maybe the problem will be solved?

thank you all!
[Android Head-Units] Daggeref:
Same problem here (among others). Is there any external mic which works fine? A parrot external mic would work?

Thanks.
[Android Head-Units] tsoump:
The problem is a fact and everyone has it.

The external mic helps a bit, but the small delay and the noise aren't solved.

So, the problem might comes from the software (or a terrible quality of the combination of mic, wires, bt).

1.So, does anybody try to use another app of calling?

2. Is it possible to find on play store a different tool which supports Bluetooth?

3. What about custom firmwares?

4. What about external BT earbuds?
[Android Head-Units] PEUGEOT/3008:
Hello,

I have a problem with the internal microphone of my junsun v1 pro when I make a call or I receive a call people are not waiting for me. me yes I also tested with an external microphone the problem and the same.

Do you have a solution to the problem.

Sorry for my English
[Android Head-Units] rav4junsun:
That call quality issue is so annoying 😅 Other than that I love the device. Today I tried with an external mic from the brand FISCON. It improved the quality a bit, but it’s still not good enough. Especially when doing business calls. Does anyone have a solution on how to make the microphone quality usable?
[Android Head-Units] mdc2500:
I purchased a Junsun M8925 late in 2021 subsequently installed in a Nissan Quashqai \Dualis J10- The unit works fine except the internal Mic was rubbish. I installed a external mic ( I think it is a cheap external mic that came with another Joying head unit) and the Mic sound is better but still not great.

I have attempted to adjust the BT Mic volume in the Factory setting menu but this has resulted in no Improvement.

I am going to install a Pioneer or Sony high quality mic in the next couple of days and report back if it works any better.

cheers

Marc
[Android Head-Units] RomarioZuev:
Hi, I also have the same problem with Junsun v1 4+64. However, for some reason it works better when I use the CarPlay (I have an iPhone). I wonder if it is a software issue or the iPhone/CarPlay uses another mic?

Also, my car (Peugeot 4007 which is basically Outlander 2) has an in-built microphone which I used for calls before I got the HU and it worked well. Is there a way to use the HU with my car mic?
[Android Head-Units] tsoump:
I don

I do not know, somehow they must connect to each other. Sounds difficult.

Have you found why the car play works better? Does your iPhone uses its own microphone?
[Android Head-Units] RomarioZuev:
I've look into CarPlay forums and apparently CarPlay uses whatever microphone the head unit does. So if it's an aftermarket HU, CarPlay would use the HU mic. They say CarPlay definitely does not use the phone mic because it is designed in a way that you would just toss the phone out of reach for safety reasons.

However, what might make a difference is that I link my CarPlay with a cable, not bluetooth. The bluetooth connection could be the issue here. Which is weird because it's otherwise quite stable.

I saw a video of a guy using another aliexpress HU (SC7862) who is able to switch to the car microphone from the settings of the HU (

). I don't know however if Junsun offers such an option.