Mobile connectivity issues - Xiaomi Mi A2 / 6X Questions & Answers

Good time.
I will try to describe the problem meekly;
I bought Mi 6x in Ukraine.
The phone is new. The box and equipment from the Mi 6x, the sticker on the screen and the back cover from the Mi 6x, but the firmware was A2. That is pure android. Turned on, checked, rang - everything works.
I decided to switch to Miui firmware.
Stitched hard and not immediately. At the beginning of the bodies, he was scorched to such a state that he did not load either into Fastboot or into the EDL. Download EDL helped testpoint. Then TWRP, then rolled the developer from Miroom.
Everything works fine except for one moment.
More about this:
In the network type settings, it is selected - "Preferably 4G", Kyivstar operator.
I am on the street - 4G connection, calls and the Internet works.
I enter the house - the connection disappears before the icon with the crossed-out SIM card. Sometimes the "H" is lit, but neither the calls nor the Internet work.
And whatever I choose in the types of network, it works fully, only the mode "Only 2G"
I go out on the street - all the rules. In any place with a signal level no worse than -105 dB, everything works as it should.
I tried to flash different modems from A2 as well. The result does not change.
I tried the sim cards of other operators - it's useless.
Other firmware also do not change the result.
Due to the fact that I now have an ARB-4, I cannot return to A2 to check how the connection will work there, there is no possibility ...
On the same table I put Mi 6x and Mi 4C, the same operator, Mi 4C - shows 4G, Mi 6x - crossed SIM card ..
Well, actually the question:
Is there an option to solve this problem?

I have really slow 4g, specially at home or closed places, band 20 is 0.4Mbps and band 3 is 4 Mbps, tell me if you find a Solution, did you flashed a2 modem from twrp? I want to try

Oceansoul91 said:
I have really slow 4g, specially at home or closed places, band 20 is 0.4Mbps and band 3 is 4 Mbps, tell me if you find a Solution, did you flashed a2 modem from twrp? I want to try
Click to expand...
Click to collapse
Not. I was flashing a modem from A2 in Mi6x.
Of course, you can try different modems and maybe it will even help you. But I'm not sure...

Reliable_bob said:
Not. I was flashing a modem from A2 in Mi6x.
Of course, you can try different modems and maybe it will even help you. But I'm not sure...
Click to expand...
Click to collapse
I tried with fastboot but I got failed anti arb check or something like this, how did you flashed with arb 4?

Related

I'm going bonkers! I'll pay you 50 dollars to fix me!

I have a Note 4 Sm N910L from Korea. I live here in Japan at the moment. I bought the phone properly over Amazon and its new. I bought a data sim for it and it was working perfectly for about 7 weeks then one morning when I woke up there was no signal I have tried everything - updated from 444 to 501 then downgraded again UP and DOwn Maaany times. If I go near the Docomo store I can get connected again and it will stay connected for the 3km back to my home and then go off again when I reach home and not go back on - so I know the hardware still works ( I guess). It now just continually says Limited service or "your card is not authorised to use this network". Ive tried many other sims in the phone, none work.
If you can give me a step by step COMPLETE guide with links to any files I need to fix it, I'll pop 50 dollars in a paypal account the same day I can make my first skype call again!!! First person's info that actually does the job gets the money.
Love my phone and Im absolutely &%$'ed without it.
Hope you can help (the wife is out buying some rope and a straight-jacket as I type)
kazbluesk1 said:
I have a Note 4 Sm N910L from Korea. I live here in Japan at the moment. I bought the phone properly over Amazon and its new. I bought a data sim for it and it was working perfectly for about 7 weeks then one morning when I woke up there was no signal I have tried everything - updated from 444 to 501 then downgraded again UP and DOwn Maaany times. If I go near the Docomo store I can get connected again and it will stay connected for the 3km back to my home and then go off again when I reach home and not go back on - so I know the hardware still works ( I guess). It now just continually says Limited service or "your card is not authorised to use this network". Ive tried many other sims in the phone, none work.
If you can give me a step by step COMPLETE guide with links to any files I need to fix it, I'll pop 50 dollars in a paypal account the same day I can make my first skype call again!!! First person's info that actually does the job gets the money.
Love my phone and Im absolutely &%$'ed without it.
Hope you can help (the wife is out buying some rope and a straight-jacket as I type)
Click to expand...
Click to collapse
I loved the way you exposed your problem. I don't come here with a fix but only with few suggestions (so I don't deserve the 50 bucks) :
- check the pins of the sim slot
- check the back screws also and tighten them a little bit
- in network settings try to manually set provider and also choose only one mode (no auto 2g/3g/lte) preferably 2g only
Envoyé de mon SM-N910C en utilisant Tapatalk
It has happened to me with another phone. Turns out my SIM had failed, so it needed to be replaced. Sometimes it happens and it's quite easy to get a new one, so that would be the first thing I'd do if I were you. I hope you fix the problem soon!
Thanks but I tried the sim contacts I didnt notice any screws loose (except my own of course) I'll check (though not hopeful). I appreciate any suggestions.
iridaki said:
It has happened to me with another phone. Turns out my SIM had failed, so it needed to be replaced. Sometimes it happens and it's quite easy to get a new one, so that would be the first thing I'd do if I were you. I hope you fix the problem soon!
Click to expand...
Click to collapse
Iridaki, thank you. I ve tried 4 other sims from my provider in it and they dont want to work either. I feel it is more a software problem as it was alright when i went to sleep one night and the totally banjacked when i woke up in the morning. Im not sure though, just a noob at all this. Thank you for trying to help though.
googy_anas said:
I loved the way you exposed your problem. I don't come here with a fix but only with few suggestions (so I don't deserve the 50 bucks) :
- check the pins of the sim slot
- check the back screws also and tighten them a little bit
- in network settings try to manually set provider and also choose only one mode (no auto 2g/3g/lte) preferably 2g only
Envoyé de mon SM-N910C en utilisant Tapatalk
Click to expand...
Click to collapse
I just looked at my settings and i am unable to find any page where I can choose 2g or 3g or 4. When I rooted the phone a few days ago I remember downloading phone info which let me choose but that made no difference. Now my phone is unrooted again.
Thank you though googy
kazbluesk1 said:
Iridaki, thank you. I ve tried 4 other sims from my provider in it and they dont want to work either. I feel it is more a software problem as it was alright when i went to sleep one night and the totally banjacked when i woke up in the morning. Im not sure though, just a noob at all this. Thank you for trying to help though.
Click to expand...
Click to collapse
Ah I see.
I think I know what's going on.
The N910L supports the following frequencies: GSM 900/1800/1900, UMTS 850/1900/2100 and LTE Band 1, 3, 5, 7.
Docomo don't use GSM at all, instead they use UMTS 800/1700/2100 and LTE Band 1, 9, 19, 21, 28.
Basically your phone is not designed for the Japanese market, as it only supports two of the eight frequencies used by Docomo. The reason you had signal and still have around their store is probably because there's a tower that supports the UMTS 2100 or LTE Band 1 frequency. So you either moved recently or perhaps you didn't but one of the nearby towers was switched to a different, unsupported by your phone, frequency.
kazbluesk1 said:
I just looked at my settings and i am unable to find any page where I can choose 2g or 3g or 4. When I rooted the phone a few days ago I remember downloading phone info which let me choose but that made no difference. Now my phone is unrooted again.
Thank you though googy
Click to expand...
Click to collapse
In network settings , there should be a submenu where you can change it. You can also directly access it with long press on data connection icon in notification drawer
Envoyé de mon SM-N910C en utilisant Tapatalk
Service mode
try this code in the dialer *#0011# whenever you have signal it helps you to identify which band you are connected with
After that you can buy a signal repeater that support that band and bring signal to your home since its not that far distance 3km from docomo store : )
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
iridaki said:
Ah I see.
I think I know what's going on.
The N910L supports the following frequencies: GSM 900/1800/1900, UMTS 850/1900/2100 and LTE Band 1, 3, 5, 7.
Docomo don't use GSM at all, instead they use UMTS 800/1700/2100 and LTE Band 1, 9, 19, 21, 28.
Basically your phone is not designed for the Japanese market, as it only supports two of the eight frequencies used by Docomo. The reason you had signal and still have around their store is probably because there's a tower that supports the UMTS 2100 or LTE Band 1 frequency. So you either moved recently or perhaps you didn't but one of the nearby towers was switched to a different, unsupported by your phone, frequency.
Click to expand...
Click to collapse
Ive not moved recently, and my childrens phones on the same sim plan and provider works perfectly. Also no matter where I go I never get signal - except right outside doccomo shop. BUT phone worked perfectly for 7 weeks before with great signal. Something has changed regarding my phone I think. Maybe my phone got changed to different settings over the air or something.
Thank you
googy_anas said:
In network settings , there should be a submenu where you can change it. You can also directly access it with long press on data connection icon in notification drawer
Envoyé de mon SM-N910C en utilisant Tapatalk
Click to expand...
Click to collapse
When I long press I get a tick box for allowing a Data network and the Just access point settings tab. No tab for choosing 2g 3g 4g LTE etc.
Thanks
azizski said:
try this code in the dialer *#0011# whenever you have signal it helps you to identify which band you are connected with
After that you can buy a signal repeater that support that band and bring signal to your home since its not that far distance 3km from docomo store : )
Click to expand...
Click to collapse
Hello Azizski, I checked *#0011# and the top one says DLCH 10736 ULCH 9786
the other seemingly relavent lines say
MM Cause 0 IDLE/DISCONNECTED-SERVICE
GMM Cause 0 DEREGISTERED/LIMIT
RCC DISCONN RSSI/TX 89/0
Whatever that all means.
Thank you for your help.
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
devilxvergil said:
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
Click to expand...
Click to collapse
Hi, I've input the settings maybe a hundred times now - I can do it from memory almost with my eyes shut . The settings are the same as what workedfor 7 weeks. The guy at the counter of my provider input them too - they dont work anymore.. There is only one access point that used to work.
iijmio
iijmio.jp
[email protected]
iij
chap or pap
Thanks for your help. I stlll feel the problem is something software or update based, maybe the modem has been changed somehow. Or another setting deep inside the phone.
Does flashing an update also flash a new modem and baseband?
devilxvergil said:
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
Click to expand...
Click to collapse
Hi Yup Im on 501. Was on the phone to them 3 times last week - last time for 2 hours - nothing they say seems to work.
Thank you for your help though.
Why you dont try flashing kitkat or first lolipop u get whit odin?
Install from Play Store ☆Phone info☆Samsung and check your CSC code than go to sammmobil and download right FW...flash whit ODIN and u will be see...
*Oh sorry u allready tried that... Maybe to flash different modem?
kazbluesk1 said:
my childrens phones on the same sim plan and provider works perfectly.
Click to expand...
Click to collapse
And, just to clarify, your children have Note 4 phones, with the exact same model number (N910L)?
Jovan1997 said:
Why you dont try flashing kitkat or first lolipop u get whit odin?
Install from Play Store ☆Phone info☆Samsung and check your CSC code than go to sammmobil and download right FW...flash whit ODIN and u will be see...
*Oh sorry u allready tried that... Maybe to flash different modem?
Click to expand...
Click to collapse
Hi, Yes, I want to try to flash a new modem but Im not sure about the procedure and exactly which files I need. I have tried to flash a few modems via ZOdin but I keep getting a nand write fail. Im a noob at this and am obviously doing something wrong. If you can tell me exactly how to do it I'd be very greatful.
Ian
iridaki said:
And, just to clarify, your children have Note 4 phones, with the exact same model number (N910L)?
Click to expand...
Click to collapse
Hi Iridaki,
Nope they have 2 old iphone 4 s' using the same data sim as me. (iijmio ((basically docomo)) ). Sorry about not being clear about that.

How do you fix Not Registered On Network?

So as of saturday my unlocked TMobile Note 4 stopped working as a phone, and won't let me make calls.
Information:
-Was on Dr. Ketan L3 version of his rom when it stopped working
-Using the N910T on AT&T
-IMEI is fine and not damaged, both numbers match (using *#06#)
-It shows bars, but when I go to make a call "Not Registered On Network"
What I've Done:
-Flashed Stock Firmware via Odin (Autoboot, and F.Time Rest checked)
-Factory Reset after odin flash
-Checked APN
-Set on LTE/WCDMA/GSM
-Searched for Networks, finds them, but when I choose AT&T it takes forever and then finally kicks me out and then in notifications, I get the "Not Registered to Network"
-Did the remove the battery thing, and removed sim
-Went to AT&T and got a new sim, worked for 1hr (sporadically) and then went back to "Not Registered on Network"
-At the store I was on phone with AT&T tech trying to troubleshoot the problem and that is when it was working shortly
-Called T-Mobile and checked to see if they blocked my IMEI number, nope they didn't, couldn't help me out further than that
-AT&T was showing that it was a Note 4 so not having that coming up as a Blackberry issue that some reported, so that's not it
-*#0011# shows service limited, but it is unlocked and everything is fine, the IMEI is good, and all is well but the limited service
-Put it in Airplane mode and woke it back from there after 5+minutes
-cleaned the connectors on the sim (new sim anyways so shouldn't really need them)
I'm running out of options, the only thing I can think of being the problem is that I might have started out using this phone on COD2, and when I flashed a COG2 firmware it didn't like that and so my phone's account settings didn't fully transfer.
Also I was messing around with the bands settings (*#2263#) what should they be on? Automatic, LTE/GSM only, or what?
Settings should be on automatic. One more thing to try is go for a drive with the phone, at least 5 miles from your house, and see if it does this when connected to other towers. I had this same issue years ago and it turned out to be a malfunctioning tower by my house.
If it still does it on other towers, then it may be hardware-related
kabuk1 said:
Settings should be on automatic. One more thing to try is go for a drive with the phone, at least 5 miles from your house, and see if it does this when connected to other towers. I had this same issue years ago and it turned out to be a malfunctioning tower by my house.
If it still does it on other towers, then it may be hardware-related
Click to expand...
Click to collapse
Thanks, yeah it kicks in randomly for like a minute and then dies, I take it to my parent's house (about 10 miles away) and along the way I get a good signal, but then when I reach their house, back to nothing. I was using it just fine the week prior. I partially blame Dr. Ketan, ever since installing his rom, I had multiple issues. I since uninstalled it and tried going back to stock. Any idea on what a good "safe" band setting is? I have that settings set to automatic, but if there was a good "safe" band that would be great. A common LTE tower. Even when I do connect or get connected, I can't register on that network, my phone won't let me. I've tried that. The bars drop to zero. I damaged my antenna wire (white one) and I just replaced it with a new one I purchased, but the hacked together one seemed to be doing the same quality job as the new one is. It shows the signal, but as soon as you try tying it down to a network it rejects it. I was afraid that when I flashed the stock image via odin it removed the unlock, but it was still there. I just hate that now I have a $500 pda, when it was a phone and now i'm relegated to using a f*ing flip phone.
i think your antenna cable is damaged. the only way to know that is be close to a tower, and see if your work or not.
bought and replaced with new ones, I get full bars, in my bedroom, but apparently they're tied to Tmobile since when I try to register it to AT&T they magically disappear, but when I close the app, they come back at the same strength level. I can't register them to Tmo since the sim. Yet my phone is telling me it's unlocked (*#0011#), IMEI = PASS, 1;
I think the prob is due to the different frequencies.
Your baseband would not be tied to a rom(ie Dr Ketan) Unless that rom contains Modem.bin
Your apn needs to be att if that's your Sim obviously.
International version has a different chipset. .. I know it's not your case. .
But it's open to any Sim. ..
I can say this.. I have a N2 unlocked (tmob) I run an Att Sim it works but the sig is really spotty... COD6/ COG2 may not be lining up frequency wise with your att Sim. ..
Try rolling your baseband back even further. .
Flashvetrin
Any clue on to what i should use for best results? Like 850/1900 or 900/2100? What is a good LTE band? Where could I find a map of LTE bands used by carriers, I know how to get to that secret menu and manually change it to see if I get better results?
dcoke said:
Any clue on to what i should use for best results? Like 850/1900 or 900/2100? What is a good LTE band? Where could I find a map of LTE bands used by carriers, I know how to get to that secret menu and manually change it to see if I get better results?
Click to expand...
Click to collapse
Well I would think automatic is out for sure.. the other prob would be after reboot the chipset will search for the default.. but I could be wrong.
I do not know what the numbers would be for band identification.
You may get lucky when calling Att and ask for someone in a higher tier. To give you some numbers for frequincies .
But you have ruled out hardware correct??
By putting a tmob Sim in????
Cuz I know you posted you did antenna work..
And I do know you said you get bars then it fades..
The fact it fades and doesn't lock into even a G band for example. Just leads me to believe the apn can't lock down based on the frequincie and the built in lte chipset...
It would be nice to just flash an att modem wouldn't it?? But don't even think about it.. lol you'll soft brick..
I wish I had a better solid answer you. You may just start testing those different bands and see if you get closer to a lock.
Flashvetrin
U rock, lol. Thx man
My Tricked Out N910P
But what could have happened that made it crap out like that since it was working just fine beforehand for 2 solid months on custom roms and what not? That's the frustrating part, I've been flashing different modems on my phone, but none have been successful. Apparently there are 3 different N910T, how do you know which ones to play with? I flashed N910T(3) bands, that failed, I did try N910A, obviously failed. Then I lost my IMEI number, got terrified, tried reflashing EFS in TWRP, nothing. Then reflashed COG2 bands, it came back. Is there an app on the Playstore that would definitively tell you if your network chip is damaged? I wouldn't know what to look for.
Have you taken apart the Note 4, what are all those contact points, are those antenna things? One of those were damaged, they're like folded metal spring boards with gold tips (same kind of thing that is used to install a qi receiver, same design). I took my tweezer and fixed it, but could that be the culprit, since on the surface, it seems like the network is fine. Works really well in WCDMA, but not much else. I was able to make calls using GSM only, but my signal was 1 bar and the audio quality was questionable, so I left it alone for 10 minutes on that hoping it would force a reconnect. This is frustrating, since I wasted $500 on this phone and not having it work after two months means now I'm back to a featureless phone.
Thanks for your advice thus far. Flashing different modems hasn't been working out well, I just wished I could remember what baseband version the guy had the phone on when I first got it? I thought it was COD6, it was definitely on Lollipop, but if it's a 910T(2) would I know, how would I know?
How do you flash NON_HLOS and modem.bin at the same time in Odin? I know Modem does bands, but what does Non-Hlos do? I thought i read LTE, so if those aren't in sync and on two different versions could that be the issue? I extracted them from the full TAR firmware files.
dcoke said:
But what could have happened that made it crap out like that since it was working just fine beforehand for 2 solid months on custom roms and what not? That's the frustrating part, I've been flashing different modems on my phone, but none have been successful. Apparently there are 3 different N910T, how do you know which ones to play with? I flashed N910T(3) bands, that failed, I did try N910A, obviously failed. Then I lost my IMEI number, got terrified, tried reflashing EFS in TWRP, nothing. Then reflashed COG2 bands, it came back. Is there an app on the Playstore that would definitively tell you if your network chip is damaged? I wouldn't know what to look for.
Have you taken apart the Note 4, what are all those contact points, are those antenna things? One of those were damaged, they're like folded metal spring boards with gold tips (same kind of thing that is used to install a qi receiver, same design). I took my tweezer and fixed it, but could that be the culprit, since on the surface, it seems like the network is fine. Works really well in WCDMA, but not much else. I was able to make calls using GSM only, but my signal was 1 bar and the audio quality was questionable, so I left it alone for 10 minutes on that hoping it would force a reconnect. This is frustrating, since I wasted $500 on this phone and not having it work after two months means now I'm back to a featureless phone.
Thanks for your advice thus far. Flashing different modems hasn't been working out well, I just wished I could remember what baseband version the guy had the phone on when I first got it? I thought it was COD6, it was definitely on Lollipop, but if it's a 910T(2) would I know, how would I know?
How do you flash NON_HLOS and modem.bin at the same time in Odin? I know Modem does bands, but what does Non-Hlos do? I thought i read LTE, so if those aren't in sync and on two different versions could that be the issue? I extracted them from the full TAR firmware files.
Click to expand...
Click to collapse
Heres
A simple method for COD6
And try odin 3.07
I need to think about this some more and get back to you...
This is a partial firmware.. it consists of the modem and bootloader COD6.
Also to rule out damage if you can get a T Mobile Sim put it in the device and see if it locks down a signal....
Flashvetrin
That was my next move, not having any real income but disability and little coming from that, I thought that was the next logical step too. I'll get a tmobile to go sim and try it see if it can't lock on to that, and see if that doesn't set it on the right path. Have you heard of other people having COG2 issues on AT&T unlocked? Maybe that was the problem, something there broke the connection. I don't know, but whatever it is, I can't thank you enough, you've at least given me more options to try that I couldn't think of on my own. I'll try that file.
dcoke said:
That was my next move, not having any real income but disability and little coming from that, I thought that was the next logical step too. I'll get a tmobile to go sim and try it see if it can't lock on to that, and see if that doesn't set it on the right path. Have you heard of other people having COG2 issues on AT&T unlocked? Maybe that was the problem, something there broke the connection. I don't know, but whatever it is, I can't thank you enough, you've at least given me more options to try that I couldn't think of on my own. I'll try that file.
Click to expand...
Click to collapse
You are the first of this kind that I'm aware of.. in regards to this issue..
Make sure you read the detail in if your device bootloops, to reboot recovery and flash the Rom.. if you want flash the Rom in the op that I've linked you to.
Wipe sys/dal/cach/data..
And flash it can't hurt.. [emoji16]
I really hope a Tmob Sim and or COD6 gives you results...and good ones at that.. [emoji2] [emoji106]
Flashvetrin
Got the sim card, $65 for that crap, and it didn't work. Called T Mobile customer service, explained my situation and how I was calling on another phone on another carrier and they insisted on calling me back on the broken not working phone. I guess I'm just screwed, and lost $500, which like I said, I can't afford to have. It's just so frustrating. I also tried the COD6 partial firmware, and nothing there also. I'll try t-mobile again. The only and last option I have, if possible, is to try to relock my phone and re-unlock it since there isn't any real way to tell if my GSM is damaged. I think my unlocked status got damaged when my phone upgraded to COG2, and since it's in that weird limbo state I can't use my phone. Do you know how to relock it?
Edit: When I look at my IMEI Number through *#06# it shows that the last two digits (independent of the actual IMEI number, since that matches everywhere) to the right of the "/" as 14, yet through "about device" it shows my imei version as 10. I assume that the 14 in the "06" screen is the version it's reading off the phone, could that be causing the issue? How would you even fix that? I don't know. but thanks again, you've been helpful.

Not connecting to 3g network but 2g works fine in my mi3w.

MANY HAVE THIS PROBLEM AS I CAME ACROSS MANY COMPLAINTS SIMILAR TO MINE DURING MY BROWSING. SOMEONE PLEASE ANSWER.
My xiaomi mi3w suddenly quit connecting to 3g network even when it is available. I tried switching to wcdma mode from settings as well as by forced method. The sim card works fine with other phones. I tried factory reset, booting back to stock version, updating, etc. During the time glitch started I was using global developer ROM miui7 . I didn't do anything unusual. I can see my imei no: from settings.. what to do? It's serious..
I have a dumb question.
Have u tried setting the right APN settings?
gk_here said:
MANY HAVE THIS PROBLEM AS I CAME ACROSS MANY COMPLAINTS SIMILAR TO MINE DURING MY BROWSING. SOMEONE PLEASE ANSWER.
My xiaomi mi3w suddenly quit connecting to 3g network even when it is available. I tried switching to wcdma mode from settings as well as by forced method. The sim card works fine with other phones. I tried factory reset, booting back to stock version, updating, etc. During the time glitch started I was using global developer ROM miui7 . I didn't do anything unusual. I can see my imei no: from settings.. what to do? It's serious..
Click to expand...
Click to collapse
were you able to resolve the issue?

Question Xiaomi 11t Pro VoLTE and Vowifi

HI Guys,
I just bought this phone for sure I love it but I live in an area where VoLTE is and VoWifi is a must to have due to poor mobile reception
I used the dial in numbers to get VoLte and and Vowifi activated got success and was able to switch them on from Mobile network menu, but they aren't working at all I tried with flight mode on and off for Vowifi same thing, tried sim card from another network no use, and signs for VoLTE or Vowifi hasn't come on notification panel also
I am on Global Rom
MIUI Version 12.5.10 (RKDMIXM)
Does anyone knows any solution to this
Thanks in advance
I've had a problem with my carrier and Wi-Fi calling which I had to fix myself. Xiaomi do nothing except bundle the default carrier settings and very little testing is done if any. There is a good chance the carrier configuration settings for your carrier are missing or broken.
If you can let me know the carrier and country you are trying to get it to work with I will take a look at the modem configuration settings for that carrier and see if it has anything in it for VoWiFi or VoLTE.
Getting it fixed however, unless you go down the technical route of using Qualcomm debug tools and unlocking the bootloader and rooting, the chances of getting it fixed is close to zero. Xiaomi have never looked at the bug report I filed months ago.
HI Philip,
Thank you for the response I am in Australia using Telstra network, I tried Optus Sim as well having the same issue with it, the only solution I could find is in below link
https://forums.whirlpool.net.au/archive/3rppj4r3
It says have to enter into Modem test tools to change region and network to Australia which isn't possible without unlocking the bootloader, I have requested bootloader unlock permission if it doesn't help will need to switch the phone
awais_666 said:
Thank you for the response I am in Australia using Telstra network, I tried Optus Sim as well having the same issue with it, the only solution I could find is in below link
https://forums.whirlpool.net.au/archive/3rppj4r3
It says have to enter into Modem test tools to change region and network to Australia which isn't possible without unlocking the bootloader, I have requested bootloader unlock permission if it doesn't help will need to switch the phone
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Click to collapse
I've looked at the modem configuration file relating to IWLAN and the settings are there. It is noted a Certificate is required to join the IWLAN for VoWiFi so it is possible that certificate isn't on the phone or is now out of date so a connection isn't allowed. It is also possible other configuration settings in the config file are out of date and need updating. If it is possible to get another carrier modem file to work, then often other things can break, but at least that would give a pointer to what changes need to be made by comparing the two.
It should be noted that Xiaomi don't really test these devices everywhere and they seem to just use the default Qualcomm provided carrier modem files and hope for the best in any particular country. You can use the feedback options to tell them of a problem but in my experience you will never get a response and in my case they've never opened a linked file with extra information (on Google drive so I can see who last opened it).
Regarding the other forum info, well I've not been able to get the modem test tool working on the 11T Pro (says to contact the modem team for permission), and the forum posts suggest we need weekly test ROMs where the permissions are enabled, however there are no weekly ROMs for the 11T Pro as far as I know. The next best thing is to modify the same settings using the Qualcomm debug tools, this takes some effort to get working.
PhilipL2021 said:
I've looked at the modem configuration file relating to IWLAN and the settings are there. It is noted a Certificate is required to join the IWLAN for VoWiFi so it is possible that certificate isn't on the phone or is now out of date so a connection isn't allowed. It is also possible other configuration settings in the config file are out of date and need updating. If it is possible to get another carrier modem file to work, then often other things can break, but at least that would give a pointer to what changes need to be made by comparing the two.
It should be noted that Xiaomi don't really test these devices everywhere and they seem to just use the default Qualcomm provided carrier modem files and hope for the best in any particular country. You can use the feedback options to tell them of a problem but in my experience you will never get a response and in my case they've never opened a linked file with extra information (on Google drive so I can see who last opened it).
Regarding the other forum info, well I've not been able to get the modem test tool working on the 11T Pro (says to contact the modem team for permission), and the forum posts suggest we need weekly test ROMs where the permissions are enabled, however there are no weekly ROMs for the 11T Pro as far as I know. The next best thing is to modify the same settings using the Qualcomm debug tools, this takes some effort to get working.
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Click to collapse
Thanks for the info Philip, let's see there is a Xiaomi.eu fastboot rom available hopefully it helps if doesn't better I would switch to some other phone, only Xiaomi phones which lasted with me long enough were Mi 5, and Mi Note 10, would love have Mi 5 again but those days are gone now as xiaomi has stopped thinking about there fans
awais_666 said:
Thanks for the info Philip, let's see there is a Xiaomi.eu fastboot rom available hopefully it helps if doesn't better I would switch to some other phone, only Xiaomi phones which lasted with me long enough were Mi 5, and Mi Note 10, would love have Mi 5 again but those days are gone now as xiaomi has stopped thinking about there fans
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Click to collapse
I can confirm the Xiaomi.eu ROMs contain exactly the same modem files (they don't touch them), so I doubt very much it will be any different. By all means give it a go if you like.
Hi Philip,
Have you checked EEA firmware if that has it?
awais_666 said:
Hi Philip,
Have you checked EEA firmware if that has it?
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Yes I checked the EEA firmware. From what I've seen investigating my own issues with VoWiFi is that all the firmware regardless of region contain the same standard Qualcomm modem files, even across different devices, not just the 11T Pro.
Did you try to disable carrier check? Dial *#*#86583#*#* in phone and then the VoLTE option would appear into sim options.

Question S21 Ultra Exynos /Germany/ Network drops after Android 12

Anyone else with network problems in some areas after Android 12? . In certain areas I my network drops, sometimes show me a good strength but when a call someone he answer and we can't hear each other. For calls works when he wants. Tried everything including Hard reset, Network reset, Clear cache, switching 5g/4g/3g/2g fresh install of official Samsung Rom via ODIN. Also did optimisation applications and nothing helps. I'm using s21 ultra, Exynos.I used my old iPhone Xs two days and works without any network issues. I go yesterday to my seller ( Saturn - A big technology shop) and they refuse to take me phone for repair/return because "They own the model too, they change the SIM card operator and nothing helps and it's a problem from this model, so they can't do anything" Can someone give me advice or some tips to try? I'm using the latest January update and can't go back to Android 11 rom because of new bootloader software...
I have it too. I have a good signal in big cities, but the village is a disaster. My past xiaomi was a good signal
ZPetrov said:
Anyone else with network problems in some areas after Android 12? . In certain areas I my network drops, sometimes show me a good strength but when a call someone he answer and we can't hear each other. For calls works when he wants. Tried everything including Hard reset, Network reset, Clear cache, switching 5g/4g/3g/2g fresh install of official Samsung Rom via ODIN. Also did optimisation applications and nothing helps. I'm using s21 ultra, Exynos.I used my old iPhone Xs two days and works without any network issues. I go yesterday to my seller ( Saturn - A big technology shop) and they refuse to take me phone for repair/return because "They own the model too, they change the SIM card operator and nothing helps and it's a problem from this model, so they can't do anything" Can someone give me advice or some tips to try? I'm using the latest January update and can't go back to Android 11 rom because of new bootloader software...
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Click to collapse
I think that's how Samsung phones have it. I compared it to an older Samsug and it was exactly the same
Ive got issues after installing BULF. It seems samsung messed up some security patch somewhere. Certain websites will not load on 5G or 4G+ Data, while it works on wifi and on tether to other devices. Funny thing is, if I switch it to 3G data, site loads fine.... Tried my sim on Note 10+ 5g running A11...Sites load & Works perfectly. Ive even factory reset to no avail, thinking it was some kind of glitch or somthing...
I have this in Ireland as well. Didn't have the phone on android 11 for long but the network signal now on 12 is definitely not good. Actual phone signal is bad not to mind 4g/5g. Any fixes?

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