Database Users

JIO 4g VoLTE not working on Note 4 (T-mobile, officialy unlocked)

Hope someone can help me with this issue!
I have got an officially unlocked T-mobile Galaxy Note 4 device connected to Reliance Jio 4g network in India. This device supports Band 3, 5 of the Reliance 4g LTE services (Band 3, 5 and 40). Just to let you know, I can manually chose either of the bands (3 or 5) using *#2263#. I can't use *#*#4363#*#* on my phone.
I can use data LTE services on my mobile without any problem.
Under the Call Settings, I have the option to enable "Voice over LTE". (done that) however, I can't get VoLTE calls to work on my phone through native dailer as VoLTE icon doesn't appear on my phone.
I can make calls only if I use Jio4gVoice app but the call quality is poor with the app.
If I use my Jio sim in my Moto G4 plus device, VoLTE icon appears on the phone and I can make calls without any issues.
Before coming here, I have talked to
1. Samsung India - they directed me to Samsung USA or T-mobile
2. Samsung + through the Video chat with Samsung plus representative in the US. They directed me to T-mobile.
3. T-mobile - said device belongs to me and can be used anywhere in the world without any problems. Asked me to talk to Reliance JIO.
4 JIO - they say the phone should support VoLTE and LTE services. They have been taking my requests to resolve the issue and closing them every other day but without any joy. I have told them that under About Device > Status IMS registration status shows Not registered.
So what needs to be done in this scenario? Do I need to replace Tmobile CSC (TMB) with an Indian CSC? Is that even possible? Seek your help and hopefully it can help others. Thanks in advance!

LTE Setting?
Hi
How could you enable Voice over LTE setting?
even i have SM-910T.

alimisandeep said:
Hi
How could you enable Voice over LTE setting?
even i have SM-910T.
Click to expand...
Click to collapse
I just followed the following menu:
Settings > Call > Call Settings > Voice over LTE Preferred (turned it on)
I have been seeing this option on my device ever since 5.1.1. Have you updated your device to latest 6.0.1?
Have you been able to get any satisfactory answers about VoLTE on Jio?
Thanks

is this the N910S?

Seemanthinis said:
is this the N910S?
Click to expand...
Click to collapse
He said T-mobile means N910T
Sent from my SM-N910G using Tapatalk

Kamaldev.kd said:
I just followed the following menu:
Settings > Call > Call Settings > Voice over LTE Preferred (turned it on)
I have been seeing this option on my device ever since 5.1.1. Have you updated your device to latest 6.0.1?
Have you been able to get any satisfactory answers about VoLTE on Jio?
Thanks
Click to expand...
Click to collapse
Did you create an IMS APN for Jio? Assuming you're already getting 4G data, head to Settings > More Networks > Mobile Networks > Access Point Names. Click + on the top to add APN and enter the exact following stuff (case sensitive):
Name - ims
APN - ims
APN Type - ims
Save and exit. In all probability, you'll not see the new APN in the list of APNs, but VoLTE symbol should come up. Hope it does, otherwise tough luck.

Amar.B said:
He said T-mobile means N910T
Sent from my SM-N910G using Tapatalk
Click to expand...
Click to collapse
but the hardware is all the same right?

Seemanthinis said:
is this the N910S?
Click to expand...
Click to collapse
I have T-mobile device i.e., SM-N910T
Regards

ph03n!x said:
Did you create an IMS APN for Jio? Assuming you're already getting 4G data, head to Settings > More Networks > Mobile Networks > Access Point Names. Click + on the top to add APN and enter the exact following stuff (case sensitive):
Name - ims
APN - ims
APN Type - ims
Save and exit. In all probability, you'll not see the new APN in the list of APNs, but VoLTE symbol should come up. Hope it does, otherwise tough luck.
Click to expand...
Click to collapse
I have tried to create APN as you have mentioned it but can't get to save the new APN.
I have noticed one more thing in STATUS i.e., IMS not registered - is that the culprit?
When I put the same JIO sim in another phone (Note 4- N910G - Indian version) it shows IMS registered and both LTE data and VoLTE work flawlessly.
Wondering if IMEI and the t-mobile are the culprits?
Thanks

Kamaldev.kd said:
I have tried to create APN as you have mentioned it but can't get to save the new APN.
I have noticed one more thing in STATUS i.e., IMS not registered - is that the culprit?
When I put the same JIO sim in another phone (Note 4- N910G - Indian version) it shows IMS registered and both LTE data and VoLTE work flawlessly.
Wondering if IMEI and the t-mobile are the culprits?
Thanks
Click to expand...
Click to collapse
It could also be the CSC. You may have to root the device, and flash INS or INU CSC (I'm using INS on the 910G) ace see if that fixes anything...

ph03n!x said:
It could also be the CSC. You may have to root the device, and flash INS or INU CSC (I'm using INS on the 910G) ace see if that fixes anything...
Click to expand...
Click to collapse
Can I flash INU/INS CSC onto my Tmobile device? Does that work like that?
Installed Phone info app and it doesn't show any CSCs for my device.

Kamaldev.kd said:
Can I flash INU/INS CSC onto my Tmobile device? Does that work like that?
Installed Phone info app and it doesn't show any CSCs for my device.
Click to expand...
Click to collapse
Can you check in the T-Mobile forum? I'm not sure about the differences between a branded and an unlocked device firmware-wise, don't want you risk a reflash.

i have an at&t galaxy note edge smn915a and even with jio4gvoice installed, i cannot make calls as it says that its unregistered, but this same sim works well in one plus one with jio4gvoice installed, can someone please help with how to get myself work around this to get my phone to be registered to jio?? any help will be really appreciated.

How to enable volte in N910G dr ketan N5 L16G rom?

i have similar issue.
i brought note 4 imported phone.
back of phone its written as 910f
but bootloader is 910p
and i have rooted and installed dr.ketans rom
i can use any network in here india.
but for jio iam not getting signal bar.
please help me.

Same problem with me
Reliance4gvoice is also not working saying that some RCS application need to close
4g LTE is working fine

ok ok kamaldev i understand whats happening as i suffered same with 915t flashing various roms for 3 months. and finally i m on jio volte today. remember the culprits. ROM itself, CSC, and IMS APN. just work on these and u r done. good luck.

VoLTE
mehra said:
ok ok kamaldev i understand whats happening as i suffered same with 915t flashing various roms for 3 months. and finally i m on jio volte today. remember the culprits. ROM itself, CSC, and IMS APN. just work on these and u r done. good luck.
Click to expand...
Click to collapse
Dear Mehra, It will be a great help, if you share your ROM and CSC details for us.
Thanks

volte
devbiju said:
Dear Mehra, It will be a great help, if you share your ROM and CSC details for us.
Thanks
Click to expand...
Click to collapse
Ram rom with INU csc
---------- Post added at 01:33 AM ---------- Previous post was at 01:11 AM ----------
http://tinypic.com/r/1z5l08n/9
http://tinypic.com/r/33bn9jn/9

Thanks a lot
mehra said:
Ram rom with INU csc
---------- Post added at 01:33 AM ---------- Previous post was at 01:11 AM ----------
Click to expand...
Click to collapse
Thanks a lot for the help , found and answer for long wait.. trying it now....

[India] Any Axon7 users from India?

Hi guys,
So if any axon7 users are in India, I have a question regarding Volte calling.
Does Volte calling work in India on the stock ROM, specifically does it work with jio?
I had the Chinese version B07 and Volte calling did not work. Flashed lineage OS and Volte started working.
Now that nougat is out and working properly, I want to go back to stock but only if Volte works.

Vurio said:
Hi guys,
So if any axon7 users are in India, I have a question regarding Volte calling.
Does Volte calling work in India on the stock ROM, specifically does it work with jio?
I had the Chinese version B07 and Volte calling did not work. Flashed lineage OS and Volte started working.
Now that nougat is out and working properly, I want to go back to stock but only if Volte works.
Click to expand...
Click to collapse
Looks like you need to update the APN settings. Try contacting customer care and have them send it to you.

I'm on the same boat, gonna try upgrading to 7.1.1 and see what happens

Tried with RR, volte works, went to stock 7.1.1, volte doesn't work. So it is a software thing, maybe a dev can help fix it?

n1234d said:
Tried with RR, volte works, went to stock 7.1.1, volte doesn't work. So it is a software thing, maybe a dev can help fix it?
Click to expand...
Click to collapse
From my research volte is a software upgrade. Technically any phone which supports 4g can support 4g after manufacturer updates. Volte also depends on the Telecom provider, the Telecom provider has to enable volte on that particular device for it support volte calling.
For most users this is not an issue, because even if Volte is not enabled they can seamlessly switch between 3g and 4g.
The problem with jio is that it is a 4g only network so there is no switch, if your device is not supported then you have to use their ****ty app, jiojoin or something like that.
So unless jio endless volte on the axon7 we are stuck with using jio join or on a stock based ROM.
Then again I may be wrong about the whole thing :laugh:

I found another possible solution
http://forum.flymeos.com/thread-7052-1-1.html

Yes from today started working magically.. On stock 7.1.1 Axon 7 USA Model.. All the best

Are you able able to make calls on VOLTE. Even i have Axon 7 US model and running android 7.1.1. But i am unable to place calls over VOLTE

prudviraj said:
Yes from today started working magically.. On stock 7.1.1 Axon 7 USA Model.. All the best
Click to expand...
Click to collapse
It does not work for me. I installed stock 7.1.1 and volte did not work. I called customer care, they were spectacularly unhelpful. I tried a bunch of other tricks but it would not work, now I am back on lineage OS and it's working fine.

ravinder reddy said:
Are you able able to make calls on VOLTE. Even i have Axon 7 US model and running android 7.1.1. But i am unable to place calls over VOLTE
Click to expand...
Click to collapse
Try the solution posted in the earlier post. I was unable to make it work but maybe you will have better luck with the us model.

Magic has happened...
I have tried the procedure mentioned in the above URL, but nothing was working. I was unable to add the APN settings as well as unable to enter in to the engineering mode. I have resetted existing APN settings and added the previous jionet APN settings.
Finally lost hope and made my self to use the Jio with Jio 4G Voice application.
But the Magic has happened here and my Axon 7 fulfilled all requirements this time even with VoLTE .
Yes VoLTE started working . Deleted Jio 4G Voice.
Don't know how but try with re inserting SIM cards and resetting the APN Settings.

ravinder reddy said:
I have tried the procedure mentioned in the above URL, but nothing was working. I was unable to add the APN settings as well as unable to enter in to the engineering mode. I have resetted existing APN settings and added the previous jionet APN settings.
Finally lost hope and made my self to use the Jio with Jio 4G Voice application.
But the Magic has happened here and my Axon 7 fulfilled all requirements this time even with VoLTE .
Yes VoLTE started working . Deleted Jio 4G Voice.
Don't know how but try with re inserting SIM cards and resetting the APN Settings.
Click to expand...
Click to collapse
Are you telling me that volte suddenly started working?
I have tried resetting, reinserting sim cards, factory reset, nothing seems to work.
This is truly bizzare.

Yes i am able to make VOLTE calls on my US axon 7 without internet or jio 4g app..
ravinder reddy said:
Are you able able to make calls on VOLTE. Even i have Axon 7 US model and running android 7.1.1. But i am unable to place calls over VOLTE
Click to expand...
Click to collapse
Yes i am able to make VOLTE calls on my US axon 7 without internet or jio 4g app.. but my dads same phone doesnt work.. very strange phenomenon bro... im not able to make it out. i tried axon 7 toolkit and tried to unlock bootloader and followed instructions.. then before flashing it went black screen like it was supposed to go.. then i had some work and unplugged immediately on the black screen and rebooted to normal..
All of a sudden jio4g calling app said on the top.. " Your phone supports VOLTE please use standard dailer" holy cow i uninstalled jio 4g app and was able to make calls ever since.. all the best..:angel:

I have a2017g model, and i am on android 7.0 nougat. Play store issue is there. I have downloaded 7.1.1 official update manually but does not seem to get install on my device, also the tried fota update which is 456mb, that also doest not get installed, saying update failed, phone not supported ??

Axon 7 can be used on Jio VoLTE now.
with simple procedures.
anyone need help let me know..
Ill write small tut once i have free time.

shaikhsadik said:
Axon 7 can be used on Jio VoLTE now.
with simple procedures.
anyone need help let me know..
Ill write small tut once i have free time.
Click to expand...
Click to collapse
I'd love to know how you made it work.
Sent from my ZTE A2017U using Tapatalk

Put only Jio sim in slot 1.
Delete all APN.
go to dialer
press *#*#4636#*#* > go to phone information > Select LTE ONLY> scroll down and turn ON Wifi Calling and Video Calling. exit by pressing home button..
GO to APN and see is JIONET APN is there if not.. make new APN .. Name JIONET. Type JIONET
exit..
Reboot. and see if calling works..

shaikhsadik said:
Put only Jio sim in slot 1.
Delete all APN.
go to dialer
press *#*#4636#*#* > go to phone information > Select LTE ONLY> scroll down and turn ON Wifi Calling and Video Calling. exit by pressing home button..
GO to APN and see is JIONET APN is there if not.. make new APN .. Name JIONET. Type JIONET
exit..
Reboot. and see if calling works..
Click to expand...
Click to collapse
I tried the same steps but in a different order earlier, but it didn't work for me then. I'm back on 6.0 now. Would any other member here be kind enough to try this and let me know if it works for you? Thanks
Sent from my ZTE A2017U using Tapatalk

n1234d said:
I tried the same steps but in a different order earlier, but it didn't work for me then. I'm back on 6.0 now. Would any other member here be kind enough to try this and let me know if it works for you? Thanks
Sent from my ZTE A2017U using Tapatalk
Click to expand...
Click to collapse
U sure tried it using only one sim in phone..
I have 2 A7 phones.. and its working on both..

shaikhsadik said:
U sure tried it using only one sim in phone..
I have 2 A7 phones.. and its working on both..
Click to expand...
Click to collapse
I tried it with a single sim only, but in a different order. Now I'm back to 6.0 so can't check currently. Waiting for someone else to also confirm it working for them
Sent from my ZTE A2017U using Tapatalk

Airtel Volte [How to Enable It]

Hey guys, I have finally arrived at a proper result after a long time.
Airtel supports Volte in all areas except J&k. , as mentioned on their website: https://www.airtel.in/volte/
Note: First u need to have an Airtel 4g sim along with a 4g/3g data plan.
So the steps to activate Volte is simple :
1. Go to the airtel Volte website given above.
2. Check for compatible devices
Note: You will be needing any one of the compatible devices listed by Airtel on their page.
3. Now you have to put your sim in the device [ compatible one ] and they reset the network settings of the device.
4. Now restart the phone and wait for some time.
5. After doing so you would get a link from Airtel.
Note: Something similar to this - Please open the following link to get manual instructions for service settings.
http://10.89.22.101:9080/SADM/Manualgrp=Auto+Device+Detection&rcId=4&msisdn=%2B91<airtelmobilenumber>&dev=Xiaomi+RedmiNote5Pro
6. After clicking on the link, you have to restart the device.
7. Airtel Volte will be enabled, now you can put it back in your Zuk Z2 and Volte is enabled.
And for those who want to know what rom I am running on,
Rom: Jaguar version January 10
Gapps: Mind the gapps
magisk: Installed
Hit the thanks button if I helped you.:good:

It's working guys.

I used galaxy j7 which is supported device. I waited for 15 mins and tried rebooting even i didn't get volte or sms mentioned above, Then I called customer care and asked about volte ,then they told your device is volte supported and keep using your device to get volte after 2 mins i got volte in j7 then i switched to z2 plus , volte is working now in z2

akshay pro said:
http://10.89.22.101:9080/SADM/Manualgrp=Auto+Device+Detection&rcId=4&msisdn=%2B91<airtelmobilenumber>&dev=Xiaomi+RedmiNote5Pro
Click to expand...
Click to collapse
Link not working for me.

mGforCe said:
Link not working for me.
Click to expand...
Click to collapse
Bro this is the link, ,that I got , u would also get a same one once you follow the above steps

I ve got VoLTE icon when I updated to aex 6.3, however when I make calls network falls back to 3G, which isnt supposed to happen. Anyone else?

Bro i Have airtel sim my z2 plus didnt compatible with volte services as this the airtel customer care employee says im on zui 2.0 help me out
Also i have very poor signal in my phone already changed various basband versions but nothing happened help me plz.

It worked for me by following the process ???????

Cyberwarrior17007 said:
Bro i Have airtel sim my z2 plus didnt compatible with volte services as this the airtel customer care employee says im on zui 2.0 help me out
Also i have very poor signal in my phone already changed various basband versions but nothing happened help me plz.
Click to expand...
Click to collapse
ok to solve your issue, all you gotta do is follow this website: https://forum.xda-developers.com/showthread.php?t=3695877 get the latest version of Indian stock rom guess (zui 2.5) and install that using qfil.
now set it up and enable volte on the device. Then follow the steps given above. Happy Flashing :good:

No matter what I try, wait for similar message as given in #1 or call customer care for volte settings they are just providing me with Instructions on how to enable VoLTE in settings.
I'm not able to get beyond that point i.e., not able to receive the link to enable VoLTE on my sim card.

I didn't got any link but kept my sim in poco f1 for 4hrs it's worked for me....
Now i can able to use volte in Z2 Plus....

anirudh.siddula said:
No matter what I try, wait for similar message as given in #1 or call customer care for volte settings they are just providing me with Instructions on how to enable VoLTE in settings.
I'm not able to get beyond that point i.e., not able to receive the link to enable VoLTE on my sim card.
Click to expand...
Click to collapse
which device are you using as an alternative to enable the volte on your sim?

LAKSHMI SAINATH said:
I didn't got any link but kept my sim in poco f1 for 4hrs it's worked for me....
Now i can able to use volte in Z2 Plus....
Click to expand...
Click to collapse
Sorry for the inconvenience u had to face during the process, but happy u got volte

Hi,
Can any one help me.
Airtel volte is working for me in first sim tray.
Problem is it is working only for 2 mins after that is directly going to 2 g network, then again i need to reboot/ aeroplane mod/ changing network to 3g and then to 4g to get volte. almost all roms are having issue for me. Cana may one please provide solution for thia

skishoreraju said:
Hi,
Can any one help me.
Airtel volte is working for me in first sim tray.
Problem is it is working only for 2 mins after that is directly going to 2 g network, then again i need to reboot/ aeroplane mod/ changing network to 3g and then to 4g to get volte. almost all roms are having issue for me. Cana may one please provide solution for thia
Click to expand...
Click to collapse
Type *#*#4636#*#* in dialpad
Select phone info then in network type select 4g or lte only

JV Spartacus said:
Type *#*#4636#*#* in dialpad
Select phone info then in network type select 4g or lte only
Click to expand...
Click to collapse
Hi, thanks for your help.
It is working, but after changing to LTE, I unable to call to anyone / unable to receive calls.
Please help me

skishoreraju said:
Hi, thanks for your help.
It is working, but after changing to LTE, I unable to call to anyone / unable to receive calls.
Please help me
Click to expand...
Click to collapse
You are not getting volte that's y
Put sim in sim1 slot

JV Spartacus said:
You are not getting volte that's y
Put sim in sim1 slot
Click to expand...
Click to collapse
Sim is slot1 only.
I have followed what you have said, I have kept LTE only in phone info after that I am getting volte with out any issue.
Now issue is after changing phone info to LTE I am unable call / receive calls

skishoreraju said:
Sim is slot1 only.
I have followed what you have said, I have kept LTE only in phone info after that I am getting volte with out any issue.
Now issue is after changing phone info to LTE I am unable call / receive calls
Click to expand...
Click to collapse
Volte is lost
You will have to qfil stock if volte is lost

JV Spartacus said:
Volte is lost
You will have to qfil stock if volte is lost
Click to expand...
Click to collapse
I think you did not understand my problem,
OK no problem, thanks for your suggestion

Oxygen OS 11 - No PDC and QPST connection

Hi,
After successful update to Android 11 on Oneplus 8 Pro, I cannot find the modem in PDC tool or QPST as before.
The device was described in Windows devices list as IN2012 without any drivers so I installed manually latest Qualcomm drivers and chose Android Modem 9020 which was recommended by some guys using beta. Unfortunately, I still cannot change modem settings via PDC.
I don't have a root on my phone and would like to stay that way.
Do you have any new guide for Android 11 how to acquire that functionality for changing modem in PDC? Thanks

Hi PDC does not detect my oneplus8 pro running android 11 .. everyone seems in this case, and no solution has been found yet
Envoyé de mon IN2023 en utilisant Tapatalk

That is true I have oneplus 8 pro IN2020, i used to have access to full-port switch and rndis,diag switch before oxygenos 11, now after updating to oxygenos 11, no longer i can access it my computer won't detect it anymore via PDC tool or QPST.

Maybe this isn't what you're talking about, but works fine here (stable 11.0.0).
*#801# to enable full-port switch.
Edit: tested PDC, also working.
Edit2: Missed that no root part. I am rooted and have engineermode enabled, that would probably be the difference.

Same for the IN2020 model that I am using.
Seems like Android 11 or OnePlus themselves are blocking the QPST port, and the only solution so far needs the device rooted.
https://forum.xda-developers.com/oneplus-8-pro/help/help-pdc-recognizing-phone-android-11-t4166849

I'm not rooted, have managed to get Engineer mode and QPST working, but PDC not seeing phone.... Ideas? (8 pro, OOS11)

sephstyler said:
I'm not rooted, have managed to get Engineer mode and QPST working, but PDC not seeing phone.... Ideas? (8 pro, OOS11)
Click to expand...
Click to collapse
Would you mind sharing how you got QPST working please? Mine only says (Phone Uknown) and if I open EFS explorer its empty.

kar200 said:
Would you mind sharing how you got QPST working please? Mine only says (Phone Uknown) and if I open EFS explorer its empty.
Click to expand...
Click to collapse
i got qpst to work watching a french video but its useless for us in uae we need pdc to connect , simply changing the courier policy wont give us volte or enable 5g. i only had volte and 5g enabled on os 10 when i was able to use pdc . lost it all in beta 1 then beta 2 volte came back automatically then lost both again in beta 3

kazlow said:
i got qpst to work watching a french video but its useless for us in uae we need pdc to connect , simply changing the courier policy wont give us volte or enable 5g. i only had volte and 5g enabled on os 10 when i was able to use pdc . lost it all in beta 1 then beta 2 volte came back automatically then lost both again in beta 3
Click to expand...
Click to collapse
EDIT: I found the video if anyone else is interested. It's in french
https://www.youtube.com/watch?v=6DtH0-PZQMw

kar200 said:
EDIT: I found the video if anyone else is interested. It's in french
https://www.youtube.com/watch?v=6DtH0-PZQMw
Click to expand...
Click to collapse
Thanks a lot ! it worked for me on IN2020 OS11 ! and i was able to replace the carrier policy file, Still Struggling with PDC full port switch access.

xda9791 said:
Thanks a lot ! it worked for me on IN2020 OS11 ! and i was able to replace the carrier policy file, Still Struggling with PDC full port switch access.
Click to expand...
Click to collapse
With this Video i was also able to activate 5G but to activate Volte is necessary to use PDC as i was not able to connect the Oneplus 8T (KB2003) with my PC.
Do you know another method to activate volte? Thanks

xda9791 said:
Thanks a lot ! it worked for me on IN2020 OS11 ! and i was able to replace the carrier policy file, Still Struggling with PDC full port switch access.
Click to expand...
Click to collapse
Double Post - Delete

exthomeboy said:
With this Video i was also able to activate 5G but to activate Volte is necessary to use PDC as i was not able to connect the Oneplus 8T (KB2003) with my PC.
Do you know another method to activate volte? Thanks
Click to expand...
Click to collapse
Hi. The only solution on Android 11 is to be root and use this solution which works very well:
https://docs.google.com/document/d/1ejLtVQTpXZaB5XGNOBRI5dZV4GpuCKtHOGo6v49hWdY/edit?usp=sharing

Zayatoshi said:
Hi. The only solution on Android 11 is to be root and use this solution which works very well:
https://docs.google.com/document/d/1ejLtVQTpXZaB5XGNOBRI5dZV4GpuCKtHOGo6v49hWdY/edit?usp=sharing
Click to expand...
Click to collapse
But after using this, with root, i want to unroot and close the Bootlader ... will the changes stay in place?

Absolutely not. The only solution to relock the bootloader is to use the MSM tool. This will cause data to be erased and the bootloader to be locked. Your Oneplus will be reset to factory configuration.
automatically manipulation to activate the volte and vowifi will be lost.

kar200 said:
EDIT: I found the video if anyone else is interested. It's in french
https://www.youtube.com/watch?v=6DtH0-PZQMw
Click to expand...
Click to collapse
Yeah, that, plus https://mt-tech.fi/en/modify-sony-xperia-1-ii-lte-a-and-5g-nr-combinations/

kingdown133 said:
Same for the IN2020 model that I am using.
Seems like Android 11 or OnePlus themselves are blocking the QPST port, and the only solution so far needs the device rooted.
https://forum.xda-developers.com/oneplus-8-pro/help/help-pdc-recognizing-phone-android-11-t4166849
Click to expand...
Click to collapse
I have a rooted device, running 11.0.1.1IN11BA
The mentioned method didn't work for me.
Volte and vowifi and 5g was working perfectly before that update.
Still can't get the phone to be recognized.

kazlow said:
i got qpst to work watching a french video but its useless for us in uae we need pdc to connect , simply changing the courier policy wont give us volte or enable 5g. i only had volte and 5g enabled on os 10 when i was able to use pdc . lost it all in beta 1 then beta 2 volte came back automatically then lost both again in beta 3
Click to expand...
Click to collapse
Hello sir
how to use PDC to enable 5G in UAE ?? can you link me to a guide for that ???

GetDiz said:
I have a rooted device, running 11.0.1.1IN11BA
The mentioned method didn't work for me.
Volte and vowifi and 5g was working perfectly before that update.
Still can't get the phone to be recognized.
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Same here. Missing my volte

Some folks in 4pda have found a solution to this.

VOLTE Issue with One Plus 8 Pro 11.0.1.1.IN11AA Update

Hello. I am using OP8P IN2020 with Global Firmware. While i am using volte without any problem with version 11.IN11AA, after updating to 11.0.1.1.IN11AA via ota, realised that volte stopped working. The volte icon disappeared. Checked settings and Volte option is still active but it doesnt work.
Tried switching to EU firmware "11.0.1.1.IN11BA" that didnt work too.
Downgraded to 11.IN11AA Stable Global version and it seems it worked. So i OTA Update to 11.0.1.1.IN11AA again and volte stopped working again.
So here is the result for me with 11.IN11AA VOLTE works. With 11.0.1.1.IN11AA and 11.0.1.1.IN11BA VOLTE does not work.
What is it about? Can i somehow fix this?

Root is required to have accsess to PDC and through it you can change the volte profile with no root your device won't be detected by PDC and nothing you can do to activate volte

So is there a guide to how to use pdc and activate volte for our device?

emremutlu said:
So is there a guide to how to use pdc and activate volte for our device?
Click to expand...
Click to collapse
https://docs.google.com/document/d/1ejLtVQTpXZaB5XGNOBRI5dZV4GpuCKtHOGo6v49hWdY/edit?usp=sharing
https://youtu.be/v7zUZhxNmPw

mohammed2m2 said:
https://docs.google.com/document/d/1ejLtVQTpXZaB5XGNOBRI5dZV4GpuCKtHOGo6v49hWdY/edit?usp=sharing
https://youtu.be/v7zUZhxNmPw
Click to expand...
Click to collapse
Yesss. With your guide i made it. Thank you very much.

Oxygen Updater
I upgraded to 11.0.11.IN11AA early this morning utilizng Oxygen Updater and my VOLTE shows it's icon up the the far right corner. Seems it's working fine. I'm sure y'all have a way to verify if it's truly working, so please have patience with me as this is all new to me. I'm a NUG (new useless guy) as we called new engineers in the Datapoint world, almost 40 years ago. You've probably never heard of that company.
Thanks for this post and thanks to all you people I'm learning so much...