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VoLTE T-Mobile USA Working on H8324 Xperia XZ2 Compact Dual Stock

I managed to get VoLTE working on the xz2cd (H8324) with T-Mobile USA using the xz3 (H8416) USA firmware oem-*.sin files.
Thank you to all the others that figured out the process details so all I had to do was try every combination - see the other VoLTE threads in this forum to guide you on the actual steps. Also thanks to Androxyde and Igoreisberg for the flash & download tools!
I have this working with the H8324_Customized NOBA_1313-6167_52.0.A.8.25_R5B firmware, I happen to choose, replacing only the oem-*.sin files from the XZ3 H8416_Customized US_1316-4522_52.0.A.8.25_R10B firmware. When you set both lines to "LTE (preferred)" and you'll be able to make LTE calls on both lines, however it may only show [HD] calling on the line you configured last I think but it'll be VoLTE on both.
Enjoy and thanks again to all the other threads that guided me through this long but worthwhile trial process. I wish the carriers didn't make LTE VoLTE provisioning difficult, why didn't they just make it universal like 3G.
Note: I was able to separately get Wifi-Calling to appear using the H8276_Freedom CA_1313-8876_52.0.A.8.25_R3B oem-*.sin files but it wasn't functional on T-Mobile USA - I think someone with a little bit more knowledge might be able to get this to work, unless you can point me in the right direction.
Someone please make an open firmware thin/light/compact dual SIM phone with Wifi-Calling/VoLTE (removable battery a bonus)!

Do you think the files would be the same on the H8314 US edition? i'm assuming you need to be rooted for this to work?

Hey Mike, Can you please share(download link) OEM*.sin files of USA firmware for Volte Settings

Im wondering if we can flash the OEM files from the US XZ1 Compact to get T-Mobile VOLTE and Wifi calling? I would try it myself but I cant find one of these phones at a reasonable price. If I do I will try and report back if anyone cares. I am glad at least VOLTE seems to work with this workaround.

VoLTE provisioned on XZ2 but calls are still made over 3G
I’ve done the same for my XZ2 (not compact, H8266). The VoLTE button is now active, but calls are still making over 3G. Any suggestion?

I just talked to a T-mobile specialist, and he confirmed that my phone should work and no need to register or do anything if it supports all bands!!! As he told me "only check for compatibility" and mine is compatible! ?

Were you ever able to get this working? New XZ2 owner and of course I bought this within a week is the announcement about all non VoLTE devices being kicked off in January..

Is there anyway to get volte working for tmobile on the h8314?

XZ2C H8314 VoLTE working on T-Mobile USA
colonelcack said:
Is there anyway to get volte working for tmobile on the h8314?
Click to expand...
Click to collapse
Yes VoLTE works but no VoWIFI with the following method:
Download USA Customized for XZ2C (H8314) and use only the two oem...sin files from XZ3 (H8416) USA Customized. (overwrite the two files in the XZ2C stack)
Use newflasher tool. (I deleted all .ta files and userdata file to avoid losing existing data)
To put the phone into flash mode, power off, hold the vol down button and plug in your usb cable while holding the button until you get a dim green light.
The device will show up in device manager under USB and you can run newflasher as administrator. Please search for a tutorial - there are many that are very good with screenshots of the files you want to move into the newflasher folder.
Some hangups I ran into when setting up and flashing -
Installing flashtool drivers required disabling driver signature enforcement on win10 (Flash device did not show up in usb in device manager until this was done)
For safety, after the flashtool driver install, I performed a repair on xperia companion app in case of any driver conflicts.
Running newflasher again, I got an error: Unable to open ./boot/Apollo_XBootConfig_MiscTA.ta! after multiple system files had been flashed.
But not to worry, the command window said the phone exited flash mode, but got error 933 - unable to sync. - No worries though, just make sure the command window states the phone is out of flash mode somewhere, disconnect your cable and power up your phone.
Then you will get an android message saying your carrier settings will update after reboot and the phone may reboot.
Once rebooted, enter *#*#4636#*#* in your phone dialer app (Takes 30 seconds after fresh boot for the menu to come up) , select phone information, and select LTE only (Note: VoLTE Provisioned will have the slider set to the right, but grayed out - Before the re-flash, the slider was set to the left and grayed out), reboot again. (If you click the 3 dots and look at IMS Status, you will see IMS status Registered, VoLTE Available and UT interface Available - Before the re-flash status was not registered and not available)
Now when you make a call, it will say "HD" in your dialer while on a call and your signal indicator will no longer say 3G when calling.
VoWIFI does not work, but you can use whatapp or something else like googleFi if its a must have, but in my case, I did not want to have to buy a new phone in January when they turn off 3G - Phones are too darn big now anyways and I love the display on this phone.
Notices will go out starting AUG 4th if your phone is marked as not supported using T-Mobile IMEI BYOD online tool - Their tool said my phone does not support VoLTE (Not fully true - It just does not have Band 71 for Long Range VoLTE but will use Band 4(66) just fine, I cannot confirm band 12 even though the phone spec supports it. It appears only Short range VoLTE is working on the phone unless someone else can confirm with this method, My Band 12 tower is behind a hill and i am 20 miles from it) T-mobile currently does not have a whitelist like AT&T, so If the UE (User Equipment - ie. phone) is configured properly, the network will handle the rest. I hope this practice does not change.
The advantage to using this method, is you are using completely stock USA files - My bootloader is locked and i am not rooted BTW. My XZ2C is only carrier unlocked.
The build number of both Roms I used was the same 52.1.A.3.49 XXX - Good Luck.
BTW - Some people were asking what modem config is working with VoLTE on T-mobile USA - to get the modem setting type *#*#7378423#*#* and in the service menu select software info, under Current modem config the value reads:
row/tmobile/vl/us

XZ1 oem files on XZ2 for VOLTE and VOWIFI calls.
nicogu said:
Im wondering if we can flash the OEM files from the US XZ1 Compact to get T-Mobile VOLTE and Wifi calling? I would try it myself but I cant find one of these phones at a reasonable price. If I do I will try and report back if anyone cares. I am glad at least VOLTE seems to work with this workaround.
Click to expand...
Click to collapse
You will need to try this. I was not so brave. The reason is the difference in the build IDs and oem.sin file names between the XZ1 (Old) and XZ2 (Current as of July USA Customized builds).
Mixing and matching files is easier when you are doing so off the same build ID. Thats why V0LTE worked on my XZ2 using XZ3 oem.sin files, they were from the same build ID and had the same names even though the sizes were slightly different.
It may work if the format of the oem.sin file did not change between the XZ1 builds and XZ2 Builds. The more different the builds, the higher the risk of something going wrong.
---------- Post added at 01:31 AM ---------- Previous post was at 01:28 AM ----------
gigili said:
I’ve done the same for my XZ2 (not compact, H8266). The VoLTE button is now active, but calls are still making over 3G. Any suggestion?
Click to expand...
Click to collapse
Enter *#*#4636#*#* in your phone dialer app, select phone information, and select LTE only - Reboot, if you cant make calls after that something else is wrong.
---------- Post added at 01:33 AM ---------- Previous post was at 01:31 AM ----------
hitemup92 said:
Were you ever able to get this working? New XZ2 owner and of course I bought this within a week is the announcement about all non VoLTE devices being kicked off in January..
Click to expand...
Click to collapse
Got this to work, no VoWIFI though - look further down the thread.

depsilon said:
Yes VoLTE works but no VoWIFI with the following method:
Download USA Customized for XZ2C (H8314) and use only the two oem...sin files from XZ3 (H8416) USA Customized. (overwrite the two files in the XZ2C stack)
Use newflasher tool. (I deleted all .ta files and userdata file to avoid losing existing data)
To put the phone into flash mode, power off, hold the vol down button and plug in your usb cable while holding the button until you get a dim green light.
The device will show up in device manager under USB and you can run newflasher as administrator. Please search for a tutorial - there are many that are very good with screenshots of the files you want to move into the newflasher folder.
Some hangups I ran into when setting up and flashing -
Installing flashtool drivers required disabling driver signature enforcement on win10 (Flash device did not show up in usb in device manager until this was done)
For safety, after the flashtool driver install, I performed a repair on xperia companion app in case of any driver conflicts.
Running newflasher again, I got an error: Unable to open ./boot/Apollo_XBootConfig_MiscTA.ta! after multiple system files had been flashed.
But not to worry, the command window said the phone exited flash mode, but got error 933 - unable to sync. - No worries though, just make sure the command window states the phone is out of flash mode somewhere, disconnect your cable and power up your phone.
Then you will get an android message saying your carrier settings will update after reboot and the phone may reboot.
Once rebooted, enter *#*#4636#*#* in your phone dialer app (Takes 30 seconds after fresh boot for the menu to come up) , select phone information, and select LTE only (Note: VoLTE Provisioned will have the slider set to the right, but grayed out - Before the re-flash, the slider was set to the left and grayed out), reboot again. (If you click the 3 dots and look at IMS Status, you will see IMS status Registered, VoLTE Available and UT interface Available - Before the re-flash status was not registered and not available)
Now when you make a call, it will say "HD" in your dialer while on a call and your signal indicator will no longer say 3G when calling.
VoWIFI does not work, but you can use whatapp or something else like googleFi if its a must have, but in my case, I did not want to have to buy a new phone in January when they turn off 3G - Phones are too darn big now anyways and I love the display on this phone.
Notices will go out starting AUG 4th if your phone is marked as not supported using T-Mobile IMEI BYOD online tool - Their tool said my phone does not support VoLTE (Not fully true - It just does not have Band 71 for Long Range VoLTE but will use Band 12 just fine) T-mobile currently does not have a whitelist like AT&T, so If the UE (User Equipment - ie. phone) is configured properly, the network will handle the rest. I hope this practice does not change.
I made the mistake of calling sony and t-mobile for support and they both kept blaming each other, the reason they don't know why VoLTE does not work on some phones is they really don't know enough about their network or the basebands in the phone or the software build process and details about android sin files - as they should not either cause if the network engineers, device manufacturers and software developers all do their job and stick to industry standard practices, it will just work anyway.
The advantage to using this method, is you are using completely stock USA files - My bootloader is locked and i am not rooted BTW. My XZ2C is only carrier unlocked.
The build number of both Roms I used was the same 52.1.A.3.49 XXX - Good Luck.
BTW - Some people were asking what modem config is working with VoLTE on T-mobile USA - to get the modem setting type *#*#7378423#*#* and in the service menu select software info, under Current modem config the value reads:
row/tmobile/vl/us
Click to expand...
Click to collapse
Thank you so much for the detailed instructions! Only one question... Where do I download these files from? And the tool? Can you link me...
Sorry it's been a long time since I've done any xda stuff

H8314 Flash tools
colonelcack said:
Thank you so much for the detailed instructions! Only one question... Where do I download these files from? And the tool? Can you link me...
Sorry it's been a long time since I've done any xda stuff
Click to expand...
Click to collapse
I dont have direct links, but here is an excellent walkthrough that calls out all the tools -
https://www.xperiablog.net/2018/01/...-firmware-for-xperia-xz-premium-xz1-and-more/
Search for flashtool on XDA there should be links for that, but you only install the drivers from it, not the tool.
You also need the xperia companion software download from sony website for any missing drivers from flashtool.
Search XDA for newflasher, thats what you will actually flash with - https://forum.xda-developers.com/cr...gress-newflasher-xperia-command-line-t3619426
the firmware download utility is xperifirm software - https://forum.xda-developers.com/cr...xperifirm-xperia-firmware-downloader-t2834142

depsilon said:
H8314 Flash tools
I dont have direct links, but here is an excellent walkthrough that calls out all the tools -
https://www.xperiablog.net/2018/01/...-firmware-for-xperia-xz-premium-xz1-and-more/
Search for flashtool on XDA there should be links for that, but you only install the drivers from it, not the tool.
You also need the xperia companion software download from sony website for any missing drivers from flashtool.
Search XDA for newflasher, thats what you will actually flash with - https://forum.xda-developers.com/cr...gress-newflasher-xperia-command-line-t3619426
the firmware download utility is xperifirm software - https://forum.xda-developers.com/cr...xperifirm-xperia-firmware-downloader-t2834142
Click to expand...
Click to collapse
It's been a while but wanted to thank you for taking the time to write out these steps. I finally took a shot with the incoming shutdown of 3g for my XZ2, but unfortunately it did not work. Similar to what gigili said, while VoLTE appears to be provisioned the calls are dropping to 3g/HSPA like they originally were. After setting to "LTE Preferred" and rebooting, calls would not be made at all. I also saw "Unknown" under the Modem Config, and from what you said it should reference T-Mobile after flashing the OEM sin files.
I tried this using the latest firmware available on XperiFirm for the XZ2 (Customized US H8266 - my device is H8276) and the XZ3, which I used to grab the two OEM sin files. The firmware is 52.1.A.3.137.
Using UnSin, I unpacked both "oem_X-FLASH-CUST-B6B5.sin" files in both firmwares, and under modem-config there are a bunch of folders, and each one seems to have a conf files pointing to "mcfg_sw/generic/row/tmobile/vl/us/mcfg_sw.mbn."
I read in another thread that T-Mobile maybe has some way of blocking this workaround now, but I'm not entirely sure if that is true? Totally understand if you've moved on from the device as it's been a while, but am admittedly curious if there's a specific firmware version that this works on I could try to salvage the device.

Volte xz2/xz2 p/xz3 solved

Samir solanki said:
Volte xz2/xz2 p/xz3 solved
Click to expand...
Click to collapse
Details on exactly how?

I will create complete guide thread for the same

Samir solanki said:
I will create complete guide thread for the same
Click to expand...
Click to collapse
Thanks I'll watch for it

I am working to bring support for T-Mobile VoLTE on the xz2c to LineageOS 18.1. As of this writing, official LineageOS builds for this device do not support VoLTE unless it was already enabled and working in the stock firmware.
I have submitted some patches which may resolve the issue for TMO and probably other carriers as well. They work for me, but testing has been limited. If you are interested in using LineageOS instead of the stock ROM, and you are willing and able to build LOS yourself on linux, consider giving my patchset a try. Please read the patch description fully before attempting a build: you will need to obtain and mount some additional files first. The LineageOS wiki has additional instructions for creating a build environment.
EDIT: My patch is part of official LOS 18.1 starting with nightly 20220401. There is no need to build it yourself.

cbs228 said:
---
Click to expand...
Click to collapse
You are a saint for working on this. I bought a H8324 XZ2c recently and was super disappointed it didn't work, so I am back to my XZ1c. Super frustrated. If you ever get a pre-compiled ROM, I would love to try. In the meantime I will try to compile it myself in the coming days despite my technical illiteracy.
If that doesn't end up working, what stock firmware is available with T-Mobile VoLTE enabled and working, so I could step up from that to Lineage? Considering how old the other solutions for trying to get VoLTE working, I am hesitant to try any especially funny business of switching old firmware files from other phones around.

xperiaperson42069 said:
If that doesn't end up working, what stock firmware is available with T-Mobile VoLTE enabled and working, so I could step up from that to Lineage?
Click to expand...
Click to collapse
As far as I am aware there isn't any stock firmware that works "out of the box." The xz2c is listed as "unsupported" by t-mobile, which probably means there isn't any sort of stock ROM out there that works. Sometimes carriers do release "branded" ROMs, but there's nothing like that for this device AFAIK.
LinageOS is designed to be installed "on top" of an existing stock ROM. If you attempt to install it after you have flashed another distro (like an AOSP build), you will likely just make a brick. If you do end up bricking your device, do not despair. You can use Emma to restore your device to factory condition. Emma is available on the Sony Developer World website, and there are many guides available for it.

VoLTE & Oneplus phones?

Hi there,
Cutting to the chase.
Australian, use Vodafone AU when at home, but working in the Philippines a lot this year (Smart Philippines), plus travel often to Taiwan.
Need VoLTE for VF AU, would love it for Taiwan (TW Mobile), dont think Smart offers it at all in PH YET, but if and when, would also be great, but less critical.
Currently have a Pixel 3 XL from VF AU, so thats sorted.
Wondering, if I get a Oneplus 7 P, what is likely to be needed to make it work?
Previously had to run custom ROMS on previous HTCs to get non native network support for VoLTE, even then it required the ROM cooker to code it in.
Please educate me!

There was a way to force enable Volte on my OP6
I'm pretty sure the process would be the same
I'll link it when I get behind my pc

thanks, look forward to your link.

virtyx said:
There was a way to force enable Volte on my OP6
I'm pretty sure the process would be the same
I'll link it when I get behind my pc
Click to expand...
Click to collapse
nope the option isn't there any more
we cut do it on op6 bye enter *#800#
in dailer
an FYI dont touch anything in there unless u know what u are doing

Same .. was working fine on 6t... Don't get.. why is it disabled

-fluffy- said:
nope the option isn't there any more
we cut do it on op6 bye enter *#800#
in dailer
an FYI dont touch anything in there unless u know what u are doing
Click to expand...
Click to collapse
does *#801# work?
that should be enough to get it working *#800# used to enable the switch, they probably changed it.

virtyx said:
does *#801# work?
that should be enough to get it working *#800# used to enable the switch, they probably changed it.
Click to expand...
Click to collapse
no thats factory mode

virtyx said:
does *#801# work?
that should be enough to get it working *#800# used to enable the switch, they probably changed it.
Click to expand...
Click to collapse
problem is
it's not there anymore

-fluffy- said:
problem is
it's not there anymore
Click to expand...
Click to collapse
there must be a way to enable serial and full-port switch (also the VOLTE switch similar to *#800#)
im pretty sure its a qualcomm / factory mode settings, it must have moved somewhere else.
i cant image oneplus getting rid of it all together.
whats TP debug?
ive sent an email to OP hopefully they can get back with an answer.
i know my pixel3xl enters a qualcom mode when i press the volume up button and have it plugged to my PC (from power off - hold down volume up and plug into PC)
maybe its similar?

virtyx said:
there must be a way to enable serial and full-port switch (also the VOLTE switch similar to *#800#)
im pretty sure its a qualcomm / factory mode settings, it must have moved somewhere else.
i cant image oneplus getting rid of it all together.
whats TP debug?
ive sent an email to OP hopefully they can get back with an answer.
i know my pixel3xl enters a qualcom mode when i press the volume up button and have it plugged to my PC (from power off - hold down volume up and plug into PC)
maybe its similar?
Click to expand...
Click to collapse
U can enable serial and full port switch... What can we do then if that's enabled?

misiokicio said:
U can enable serial and full port switch... What can we do then if that's enabled?
Click to expand...
Click to collapse
How do you get to the switch to turn them on?
I used this on my OP6
https://forum.xda-developers.com/oneplus-5t/how-to/guide-volte-vowifi-german-carriers-t3817542

virtyx said:
How do you get to the switch to turn them on?
I used this on my OP6
https://forum.xda-developers.com/oneplus-5t/how-to/guide-volte-vowifi-german-carriers-t3817542
Click to expand...
Click to collapse
But let's say i use this guide...still says u need to enable the volte and wifi calling swiches by going into *#800# in logkit .. but unfortunately op7 pro does not have these option to enable em in the logkit ? So what's gonna happen if u do all that pc connection without using logkit?

misiokicio said:
But let's say i use this guide...still says u need to enable the volte and wifi calling swiches by going into *#800# in logkit .. but unfortunately op7 pro does not have these option to enable em in the logkit ? So what's gonna happen if u do all that pc connection without using logkit?
Click to expand...
Click to collapse
Itay just enable the switches anyway

virtyx said:
Itay just enable the switches anyway
Click to expand...
Click to collapse
So is it safe to follow that guide? Not rooted so i cant backup efs

misiokicio said:
So is it safe to follow that guide? Not rooted so i cant backup efs
Click to expand...
Click to collapse
you could wait for the MSM tool to be released
if you break something you can always use the MSM tool to repair EFS
pretty sure you can create a backup of efs using fastboot (i dont know exactly how)

I have VOLTE just popped sim card in and it showed up. Didn't have to do anything. 12gb unlocked version on ATT.

Qualcomm drivers don't seem to work with the 7. Can't find the device in PDC after enabling serial & full-port switch.
I noticed compared to the 6, that VoLTE and VoWiFi works for one of my carrier (Vodafone NL) out of the box. The trick that I did on my 6 also made VoLTE work for my other carrier (KPN NL) which doesn't work with the 7 pro out of the box.

borijess said:
I have VOLTE just popped sim card in and it showed up. Didn't have to do anything. 12gb unlocked version on ATT.
Click to expand...
Click to collapse
Out of curiosity, what was your phone before? Mine is due for delivery today, I have ATT and my phone before is a 6T. Just wondering because I want to make sure I still have VoLTE. Thanks!

xByt3z said:
Qualcomm drivers don't seem to work with the 7. Can't find the device in PDC after enabling serial & full-port switch.
I noticed compared to the 6, that VoLTE and VoWiFi works for one of my carrier (Vodafone NL) out of the box. The trick that I did on my 6 also made VoLTE work for my other carrier (KPN NL) which doesn't work with the 7 pro out of the box.
Click to expand...
Click to collapse
did you open as admin? i dont see why it wouldnt work
did you connect phone then open the PDC software?
perhaps we need an updated PDC/QPST tool?
Qualcomm drivers: https://qc2.androidfilehost.com/dl/...4074/QUD.WIN.1.1+Installer-10037.3+Setup.zip?
QPST: https://qpsttool.com/qpst-tool-v2-7-474
try these. they look like the latest versions.
perhaps try a different USB port also.
if this doesnt work, we might have to try and get in touch with the OP and see if they know of any way to get it working.
i dont have my 7Pro yet to try this.

I tried with 2 different computers and I have those exact versions you linked installed.
Yes, I opened as admin.
Yes, I connected the phone first then opened the software. I tried reconnecting with the software open too but also, no luck.
I tried searching for a driver in Device Manager manually by browsing to both the Qualcomm and OnePlus folders.

[SOLVED] VoLTE not working - OP8T / OP9 - OOS12 Oxygen OS 12 & OOS13 (no root fix needed)

[SOLVED] - Solution found here.
This worked for me on OxygenOS 13 and seems to be permanent, persisting after reboot and SIM swap.
Finally!!! GUIDE To enable VoLTE and VoWifi on OOS 12.1 without root
Hello everyone, finally there is a way to enable VoLte without root You need 2 apps for the process .. Before starting if you have 2 sims make sure you disable the second sim and proceed.. After you finish with the first sim then enable the...
forum.xda-developers.com
Hi PPLs,
Has anyone managed to force VoLTE Calling to be enabled on OOS12? I am using the OnePlus 8T and my wife uses the OnePlus 9. I have had to rollback both phone the OOS11 after testing OOS12 and realising the OnePlus Log Kit app no longer works, therefore no way to enable VoLTE calling.
For now we are holding on to OOS11 (with the Log Kit fix) until we find a fix in OOS12, otherwise we both might be forced to look and another brand of phone, which I really don't want to do.
Just as a side note, I was using a Realme XT which I bought in 2020 which had VoLTE enabled by default as soon as it recognised the SIM, so the network is capable, but I get no support from Vodafone AU as the OnePlus phones are imported as they are not generally sold in Australia. It seems the same story with all Australian carriers.
Also, my main reason for not rooting the phones is since we use them as daily drivers and need to use secure banking apps.
I know a few people have asked similar questions before, however I'm hoping there might be some progress on this soon.
Thank you!
Currently running: OnePlus 8T (KB2000) & 9 on OOS11 - Vodafone Australia

joe460 said:
Hi PPLs,
Has anyone managed to force VoLTE Calling to be enabled on OOS12? I am using the OnePlus 8T and my wife uses the OnePlus 9. I have had to rollback both phone the OOS11 after testing OOS12 and realising the OnePlus Log Kit app no longer works, therefore no way to enable VoLTE calling.
For now we are holding on to OOS11 (with the Log Kit fix) until we find a fix in OOS12, otherwise we both might be forced to look and another brand of phone, which I really don't want to do.
Just as a side note, I was using a Realme XT which I bought in 2020 which had VoLTE enabled by default as soon as it recognised the SIM, so the network is capable, but I get no support from Vodafone AU as the OnePlus phones are imported as they are not generally sold in Australia. It seems the same story with all Australian carriers.
Also, my main reason for not rooting the phones is since we use them as daily drivers and need to use secure banking apps.
I know a few people have asked similar questions before, however I'm hoping there might be some progress on this soon.
Thank you!
Currently running: OnePlus 8T (KB2000) & 9 on OOS11 - Vodafone Australia
Click to expand...
Click to collapse
Hi. No way. only Root

joe460 said:
Hi PPLs,
Has anyone managed to force VoLTE Calling to be enabled on OOS12? I am using the OnePlus 8T and my wife uses the OnePlus 9. I have had to rollback both phone the OOS11 after testing OOS12 and realising the OnePlus Log Kit app no longer works, therefore no way to enable VoLTE calling.
For now we are holding on to OOS11 (with the Log Kit fix) until we find a fix in OOS12, otherwise we both might be forced to look and another brand of phone, which I really don't want to do.
Just as a side note, I was using a Realme XT which I bought in 2020 which had VoLTE enabled by default as soon as it recognised the SIM, so the network is capable, but I get no support from Vodafone AU as the OnePlus phones are imported as they are not generally sold in Australia. It seems the same story with all Australian carriers.
Also, my main reason for not rooting the phones is since we use them as daily drivers and need to use secure banking apps.
I know a few people have asked similar questions before, however I'm hoping there might be some progress on this soon.
Thank you!
Currently running: OnePlus 8T (KB2000) & 9 on OOS11 - Vodafone Australia
Click to expand...
Click to collapse
Actually there is a way, but not straightforward and if you mess up, you can brick your phone.
First of all you need to unlock engineering menu in OOS12 and in MBN section try to enable VoLTE. If after this volte still doesn't work, enable diagnostic ports via engineering menu, and only after via QPST and PDC activate carrier profiles for your region (Vodafone Australia).
P.S: Making it via root is easier, as Volte is enabled via Magisk module, and diagnostic ports for PDC & QPST are enabled via basically two commands in adb.

Why not try LineageOS 19.1(Android 12)?
Volte works fine out of box.
You just need gapps, magisk and some module to pass safteynet check, then it's all good.

Rootk1t said:
Actually there is a way, but not straightforward and if you mess up, you can brick your phone.
First of all you need to unlock engineering menu in OOS12 and in MBN section try to enable VoLTE. If after this volte still doesn't work, enable diagnostic ports via engineering menu, and only after via QPST and PDC activate carrier profiles for your region (Vodafone Australia).
P.S: Making it via root is easier, as Volte is enabled via Magisk module, and diagnostic ports for PDC & QPST are enabled via basically two commands in adb.
Click to expand...
Click to collapse
Do you have any guide for this?

Secrecy not worki anymore

Rootk1t said:
Actually there is a way, but not straightforward and if you mess up, you can brick your phone.
First of all you need to unlock engineering menu in OOS12 and in MBN section try to enable VoLTE. If after this volte still doesn't work, enable diagnostic ports via engineering menu, and only after via QPST and PDC activate carrier profiles for your region (Vodafone Australia).
P.S: Making it via root is easier, as Volte is enabled via Magisk module, and diagnostic ports for PDC & QPST are enabled via basically two commands in adb.
Click to expand...
Click to collapse
Thank you for the tip! I'm pretty comfortable with digging around like that.
I'll definitely give that one a go in the near future. It's my daily driver at the moment so I need to pick a time or use an old backup phone for a while.
Much appreciated!

IAAxl said:
Why not try LineageOS 19.1(Android 12)?
Volte works fine out of box.
You just need gapps, magisk and some module to pass safteynet check, then it's all good.
Click to expand...
Click to collapse
Thanks! LineageOS is usually my goto, but in this case it's my daily and I need all the secure banking and similar apps to work.

Finally!!! GUIDE To enable VoLTE and VoWifi on OOS 12.1 without root
Hello everyone, finally there is a way to enable VoLte without root You need 2 apps for the process .. Before starting if you have 2 sims make sure you disable the second sim and proceed.. After you finish with the first sim then enable the...
forum.xda-developers.com

ghost.ign said:
Finally!!! GUIDE To enable VoLTE and VoWifi on OOS 12.1 without root
Hello everyone, finally there is a way to enable VoLte without root You need 2 apps for the process .. Before starting if you have 2 sims make sure you disable the second sim and proceed.. After you finish with the first sim then enable the...
forum.xda-developers.com
Click to expand...
Click to collapse
Thank you!
Will give it a go on my wife's OP9 which I've kept on OOS11 because on this.
FYI I recently bought a OP10 Pro EU version and everything works perfectly including VoLTE & VoWIFI.
Looks like maybe the Global versions are having VoLTE issues in Australia on some carriers.
Only just bit the bullet 2 weeks ago with the OP8T and installed LineageOS 20. Works great out of the box.
I might consider re-flashing the stock OOS13 ROM on the 8T just to try this fix too.

ghost.ign said:
Finally!!! GUIDE To enable VoLTE and VoWifi on OOS 12.1 without root
Hello everyone, finally there is a way to enable VoLte without root You need 2 apps for the process .. Before starting if you have 2 sims make sure you disable the second sim and proceed.. After you finish with the first sim then enable the...
forum.xda-developers.com
Click to expand...
Click to collapse
UPDATE: GREAT NEWS! GOT VoLTE WORKING ON 4G & 5G - SOLVED
Thank you so much @ghost.ign !!
I finally got around to unbricking my almost forgotten OP8T KB2005 International Version using MSMDownloaderTool and tried the tweak using the link you provided. It worked!
Best part was, it worked on the current OOS13 and persists after reboot, as well as removing & reinserting the SIM. Very happy!
It's now time to update my wife's OP9 and do the same. Fingers crossed.
Many, many thanks!!!
FYI - For anyone else reading. I found the details to unbrick my OP8T here:
[OP8T][OOS KB05AA/BA/DA] Unbrick tool to restore your device to OxygenOS
Disclaimer: By attempting any of the processes listed in this thread you accept full responsibility for your actions. I will not be held responsible if your device stops working, catches fire, or turns into a hipster and claims to have been...
forum.xda-developers.com
TIP: When installing the Qualcomm drivers on Windows, boot using the Windows start-up option no.7 to allow unsigned drivers. (Knowing that could've saved me a couple of hours.)

joe460 said:
Thank you for the tip! I'm pretty comfortable with digging around like that.
I'll definitely give that one a go in the near future. It's my daily driver at the moment so I need to pick a time or use an old backup phone for a while.
Much appreciated!
Click to expand...
Click to collapse
Hey any workaround to access pdc to change mbn profile on oos12 non root?
I have tried the shizuku and pixelims, but my ims status not registered.

redzyy said:
Hey any workaround to access pdc to change mbn profile on oos12 non root?
I have tried the shizuku and pixelims, but my ims status not registered.
Click to expand...
Click to collapse
i think i saw some post related to how to access PDC and that kinda stuff on OOS 12 or 13, i will post it here let me check if it is still there.

redzyy said:
Hey any workaround to access pdc to change mbn profile on oos12 non root?
I have tried the shizuku and pixelims, but my ims status not registered.
Click to expand...
Click to collapse
[GUIDE][A11][A12][A13] VoLTE and VoWIFI on custom/stock ROMs with any Carrier
Activate VoLTE & VoWIFI on custom/stock ROMs with any Carrier Yes, yes, I know that this is not the first thread with activation VoLTE and VoWIFI. But my thread will be more convenient and easier to understand. ATTENTION ! ! ! These methods...
forum.xda-developers.com

ghost.ign said:
[GUIDE][A11][A12][A13] VoLTE and VoWIFI on custom/stock ROMs with any Carrier
Activate VoLTE & VoWIFI on custom/stock ROMs with any Carrier Yes, yes, I know that this is not the first thread with activation VoLTE and VoWIFI. But my thread will be more convenient and easier to understand. ATTENTION ! ! ! These methods...
forum.xda-developers.com
Click to expand...
Click to collapse
Thanks for the response, i checked that thread already, for oos12, they need rooted phone.

I can confirm that Oneplus 8T (KB2003) on OOS13, using Shizuku and Pixel IMS can activate VOLTE. I am using KB2003_11_F.63 build.

warlord2045 said:
I can confirm that Oneplus 8T (KB2003) on OOS13, using Shizuku and Pixel IMS can activate VOLTE. I am using KB2003_11_F.63 build.
Click to expand...
Click to collapse
I'm unable to confirm, maybe someone else can. I can however suggest that there's is likely no harm trying. I believe it should work across all carrier unlocked models.
Give it a go and report back if you can share.
FYI - since upgrading from OOS11 to OOS13 my model number has changing from KB2000 to KB2005 using the standard OTA upgrade process.

Rootk1t said:
Actually there is a way, but not straightforward and if you mess up, you can brick your phone.
First of all you need to unlock engineering menu in OOS12 and in MBN section try to enable VoLTE. If after this volte still doesn't work, enable diagnostic ports via engineering menu, and only after via QPST and PDC activate carrier profiles for your region (Vodafone Australia).
P.S: Making it via root is easier, as Volte is enabled via Magisk module, and diagnostic ports for PDC & QPST are enabled via basically two commands in adb.
Click to expand...
Click to collapse
Recent updates have made this method a more dangerous option. I can't go back
If you know how to put it back together, I'd love to know.

Question Unable to have 5G

Hey guys.... I'm using pro 7 in an unsupported county and I was able through guides to enable all the missing features expect the 5g...can anyone help me?

So do i, looking forward for this. Sim provider support 5g but Google not provide it. Any tips will be appreciated

Same here. I had found a temporary fix on pixel 6 that worked for people but not for me. Let's see if a wizard here can help

You can activate the 5G in the supported countries with magisk

I have follow the guides here....I successfully enable call screening, wifi calling etc.....but 0 luck with 5g....I don't understand what I'm missing

G_Vasi said:
I have follow the guides here....I successfully enable call screening, wifi calling etc.....but 0 luck with 5g....I don't understand what I'm missing
Click to expand...
Click to collapse
Any luck with vowifi or direct my call?

Yeah I have manage to enable all the features expect 5g

G_Vasi said:
Yeah I have manage to enable all the features expect 5g
Click to expand...
Click to collapse
I read about volte zip magisk modul need to flash,did you flash it?

As I said....I have manage to enable all the features such us volte etc.... everything work except 5g...and yes I have 5g in my area

Have you gone into the Phone Information screen and enabled NR?
*#*#4636#*#*, choose Phone Information. Under preferred network type, change it to NR/LTE.
If that doesn't work, your carrier could be blocking it or it could need a special network configuration that the Pixel doesn't have being an unsupported device. Either way, you may be out of luck.

EtherealRemnant said:
Have you gone into the Phone Information screen and enabled NR?
*#*#4636#*#*, choose Phone Information. Under preferred network type, change it to NR/LTE.
If that doesn't work, your carrier could be blocking it or it could need a special network configuration that the Pixel doesn't have being an unsupported device. Either way, you may be out of luck.
Click to expand...
Click to collapse
I can't get into phone information with that code . I got messageroblem with network or unsupported MMi code.
I'm not rooted yet and didn't unlocked bootloader. Anyone successfully get 5G in unsupported country?
My network provider support 5G

Josh said:
I can't get into phone information with that code . I got messageroblem with network or unsupported MMi code.
I'm not rooted yet and didn't unlocked bootloader. Anyone successfully get 5G in unsupported country?
My network provider support 5G
Click to expand...
Click to collapse
Sounds like your SIM is disabling the menu.
Download this app and it will bypass that.
Force LTE Only (4G/5G) - Apps on Google Play
This app will help You change network to 5G/4G/3G/2G and stay in chosen network
play.google.com
Set up the app and use Method 2 to get that menu pulled up.
I was able to use that app to force my OnePlus 9 to use 5G when I flashed the Chinese firmware that didn't actually support US carriers and also blocked dialer access to the menu so it's worth a shot.

EtherealRemnant said:
Sounds like your SIM is disabling the menu.
Download this app and it will bypass that.
Force LTE Only (4G/5G) - Apps on Google Play
This app will help You change network to 5G/4G/3G/2G and stay in chosen network
play.google.com
Set up the app and use Method 2 to get that menu pulled up.
I was able to use that app to force my OnePlus 9 to use 5G when I flashed the Chinese firmware that didn't actually support US carriers and also blocked dialer access to the menu so it's worth a shot.
Click to expand...
Click to collapse
No luck, only just unlock bootloader and root with Magisk and flash modul VOLTE to force 5G but only what makes me bad is that data must be wiped and must again activated bank app and that is procedure. Any solution to avoid vipe data when I unlock bootloader? I think that there is not

Josh said:
No luck, only just unlock bootloader and root with Magisk and flash modul VOLTE to force 5G but only what makes me bad is that data must be wiped and must again activated bank app and that is procedure. Any solution to avoid vipe data when I unlock bootloader? I think that there is not
Click to expand...
Click to collapse
Yeah with you being stuck on EDGE, I don't have high hopes that you're able to fix this without root (and even then, you may not).
There is no way to unlock the bootloader and preserve data as the wipe is a security precaution.

G_Vasi said:
Hey guys.... I'm using pro 7 in an unsupported county and I was able through guides to enable all the missing features expect the 5g...can anyone help me?
Click to expand...
Click to collapse
Which carrier?

Vodafone GR

If you are rooted, did u try the network signal guru method?

Oneplus 8T KB2005 no LTE/WI-FI Calling/VoLTE

Hello,
I'm on the kb2005 and i don't have any options for wifi calling, volte or LTE.
I'm on OOS 13.1 in Canada.
Before i upgrade my phone, what options do i have? What am I doing wrong?

I have the same issue on my KB2003 since 13.1. No wi-fi or incoming/outgoing calls on either SIM. Had to put my SIMs in other phones before factory resetting which accomplished nothing.
I need to downgrade to 13.0 or try a different variety of 13.1. It does not appear, based on posts, to be a widely experienced problem.
If you have found a solution, please share.

You might want to try this: https://forum.xda-developers.com/t/...12-c-33-build-need-root.4478889/post-87271815

KnowNadda said:
I have the same issue on my KB2003 since 13.1. No wi-fi or incoming/outgoing calls on either SIM. Had to put my SIMs in other phones before factory resetting which accomplished nothing.
I need to downgrade to 13.0 or try a different variety of 13.1. It does not appear, based on posts, to be a widely experienced problem.
If you have found a solution, please share.
Click to expand...
Click to collapse
When you insert sim-card smartphone (in this example 8T) checks what carrier it belongs to and activates looks in the inbuilt profile base and activates the appropriate one for your carrier.
If the phone doesn't find the one for your carrier it activates the generic one, which may work only partially for your carrier or don't work at all if settings mismatch.
That worked generally good in OOS11/12/13, but OnePlus changed smth in OOS13.1 which makes magisk VoLTE enabler modules only partially (but still) effective, and also specified by you problems occur.
You can try to activate engineering mode (easier via magisk module) and change carrier profile manually from within phone.
It can be also done via PDC software in Windows.
If you don't want or can't do the above mentioned you can try different carrier sim cards or apply for support (carrier or oneplus).

BillGoss & Rootk1t
Thanks for the suggestions. I have time this afternoon to try things.
I had no idea my perfectly configured and operating phone running T_Mo and Verizon SIMs would get crapped by a seemingly minor update. I would have waited for Android 14 if I had.
Wondering why I can't even get Wifi working. I may MSM back to 11 and try to get back on13.0 and STOP!
I don't want to keep using my Pixel 6 Pro because it's size & weight are enough to make me miss my 8T.

I have Oneplus Engineer mode unlock & VoEnabler modules active in Magisk. No icon indicating VoLTE active when both SIMs indicated VoLTE prior to 13.1 . I have QPST installed but after poking around I think I need to throw in the towel on 13.1 and somehow fastboot flash to downgrade or MSM to A11 and upgrade. How do I stop before 13.1 since I will likely only be offered a jump to 13.1?
Can I boot OrangeFox or TWRP and flash an older than current version since my bootloader is unlocked? I have the payload for OOS 13 F.63.

pixel-volte-patch/README.en.md at main · kyujin-cho/pixel-volte-patch
Rootless replacement for persist.dbg.volte_avail_ovr patch - pixel-volte-patch/README.en.md at main · kyujin-cho/pixel-volte-patch
github.com
Try this will work for sure without root