yashsingh1/xdaforums huggingface dataset:
[OnePlus 5T  Guides, News, & Discussion] twinsen.net:
They block Xiaomi, and Orange was talking about it. As in my edited post: Nju works with EE profile (EE stands for EverythingEverywhere, Orange+T.Mobile merger from UK, for those who didn't know yet :) )

Hope this would help users from Poland :)
[OnePlus 5T  Guides, News, & Discussion] alfagamma01:
I have tried several settings to have working both volte and vowifi but no luck.

When vowifi works on 1st slot (cosmote gr) the 2nd slot does not have 4g band 20 800 (wind GR)

When I have lte working on both slots I have only volte.

Is there any solution?

Can I put different settings on each slot? So it will work with vowifi having lte band 20 800 at the same time.

My smartphone is O+6

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[OnePlus 5T  Guides, News, & Discussion] aoprea:
Working both Volte & Wowifi on OP6 (NO Root)

Carier: Digi Mobil Romania

Used: India-VoLTE-Vodafone profile
[OnePlus 5T  Guides, News, & Discussion] zouzou91300:
Did someone tried this with French network ?
[OnePlus 5T  Guides, News, & Discussion] soxfor:
Tried both Telefonica_UK_Commercial and India-VoLTE-Vodafone, VoWiFi doesn't seem to work.

On dialer app it instantly asks for airplane mode to be disabled. Stock OOS OB12 Dialer.

VoLTE seems ok! :D

- small search, it would seem Vodafone Portugal doesn't offer VoWiFi service (based on a post from Feb/2017 on their forum).

On the *#*#4636*#*# menu it also only shows VoLTE switch. Tried both the *#800# and VoEnabler magisk module, to no avail.

Vodafone/Portugal
[OnePlus 5T  Guides, News, & Discussion] MultiCulti:
One other question:

Can this Mod affect somehow the Play Store (play services)

Cause since this mod some apps are not compatible with my phone (amazon for example)
[OnePlus 5T  Guides, News, & Discussion] Skinny Pete:
Don't know if you've managed to do it by now or not but you need to delete the .mbn file under

system/etc/firmware/mbn_ota/mcfg_sw

and under

system/etc/firmware/mbn_ota/mcfg_sw_nocdma

I haven't managed to get mine to work but I know how to remove the default profile ( saw it in another thread somewhere).
[OnePlus 5T  Guides, News, & Discussion] neutrin:
Thanks! I found out about this last night by reading the entire original german forum thread for OP3. I will delete it sometime in the next days.
[OnePlus 5T  Guides, News, & Discussion] Disket:
Hey guys I've tried this on 2 laptops running Windows 10 but still getting the error "QMI connection not ready, please use USB driver version 1.00.32 or later and fix the connection before using PDC tool." on Step 5 right after I select my device (which shows Qualcomm WWAN adapter xxx). I'm using a OP3T btw.

Any hints?
[OnePlus 5T  Guides, News, & Discussion] acemimerakli:
Turkcell ve Vodafone :good::good:

---------- Post added at 08:29 AM ---------- Previous post was at 08:23 AM ----------

please check device drivers. second step qpst reload
[OnePlus 5T  Guides, News, & Discussion] showofdeth6969:
Unfortunately the guide is useless if you don't have or are without a PC.
[OnePlus 5T  Guides, News, & Discussion] Cpt. Strawberry Crepe:
Can anyone upload those 2 .ZIP files? My antivirus(ESET) says the site is blocked because there is a risk. :x
[OnePlus 5T  Guides, News, & Discussion] astracd:
disable antivirus and download

My norton antivirus is fine with the site and downloading
[OnePlus 5T  Guides, News, & Discussion] execpt:
Worked

Thanks man, that's working in Turkey -TurkTelekom
[OnePlus 5T  Guides, News, & Discussion] Cpt. Strawberry Crepe:
Worked, but I don't get any icons on the status bar to indicate I'm using VoLTE.

Cosmote - Greece

Plus, my 4G downgrades to 3G or H+ when I start a call.
[OnePlus 5T  Guides, News, & Discussion] Blackz Afiqz:
it doesnt work then
[OnePlus 5T  Guides, News, & Discussion] Blackz Afiqz:
hi [MENTION=4977129]dagoban[/MENTION] , the Telefonica_UK_Commercial profile doesnt appear in my list. However I found it in

/etc/firmware/mbn_ota/mcfg_sw_NoCDMA.. how can I enable that profile?

Oneplus 3T A3010 running latest beta and latest firmware
[OnePlus 5T  Guides, News, & Discussion] SpartaKurd:
At first time I tried I had volte toggle next to the network. But after first reboot I lost it, and I tried many times again, but I couldn't have it again. I'm using Vodafone/Turkey. How can I have volte back again?
[OnePlus 5T  Guides, News, & Discussion] mnurolcay:
It works for Vodafone and Turk Telekom from Turkey. Unfortunately not for Turkcell. Tried both India and UK, no luck for Turkcell. :confused:
[OnePlus 5T  Guides, News, & Discussion] Cpt. Strawberry Crepe:
As I said, my 4G reverts to 3G or H+ when I make a phonecall. If I factory reset from TWRP and re-flash the ROM, will I fix this problem?
[OnePlus 5T  Guides, News, & Discussion] Cpt. Strawberry Crepe:
Unfortunately a clean install didn't fix it. I don't know if it happens to anyone else, but I saw it happened AFTER I was done with the guide. Any way to revert this change? Are we sure that clean installing the Open beta resets those settings and is a bug/feature of the ROM? Are those settings applied for good now with no way to revert back unless I use the programs again?

Edit: Unless 4G does NOT trasfer voice data and it's purely for mobile so it switches to 3G/2G. Can anyone confirm? It's driving me crazy. xD I did a google search but I want a OnePlus 5T user to confirm this. Thanks
[OnePlus 5T  Guides, News, & Discussion] soxfor:
On a device and network without VoLTE it will drop to 3G, or lower, while doing the call and back to 4G after the call is terminated.

For this guide to work, the network/cell provider (on the chance that either of those two configurations work with your network) has to support VoLTE/VoWiFi and it also might need to be enabled on your number/sim as well.
[OnePlus 5T  Guides, News, & Discussion] repulse:
Where did you get the Orange_France profile ?
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
The profile name is: France-Commercial-Orange
[OnePlus 5T  Guides, News, & Discussion] hubono:
Try a different profile in qpst
[OnePlus 5T  Guides, News, & Discussion] alfagamma01:
You mean network profile?

I have tried several but I could not manage to work both SIM cards right.

Is it possible to have different profile for each slot?

Στάλθηκε από το ONEPLUS A6003 μου χρησιμοποιώντας Tapatalk
[OnePlus 5T  Guides, News, & Discussion] locolyric:
is there anyway to perform this how-to on other snapdragon device?

i had a zuk z2 which is volte , it work on many other country but not mine .

sad.
[OnePlus 5T  Guides, News, & Discussion] reddevil08:
Edit: delete
[OnePlus 5T  Guides, News, & Discussion] stavros kelis:
Has anyone succeded in enabling volte anf vowifi on custom roms?
[OnePlus 5T  Guides, News, & Discussion] bjo81:
On OP3 with LOS 16, IMS registration is unsuccessfull. Used VoLTE enabler with Magisk.

BTW, is is possible to change the profile without OOS?
[OnePlus 5T  Guides, News, & Discussion] flipside101:
i dont suppose your able to export and share the vodfone UK profile are you ?
[OnePlus 5T  Guides, News, & Discussion] bjo81:
If you are on a custom ROM, you don't have to use OOS for PDC. Simply run

as SU in a terminal on your phone and it shows up in PDC. Maybe [MENTION=4977129]dagoban[/MENTION] could add this on the front page.

My OP3 on LOS 16 shows now "registered" in its VoLTE status (o2), unfortunately no WifiCalling. For my confusion, TelefonicaUK was only half enabled before, the move from OOS to LOS must have changed something.
[OnePlus 5T  Guides, News, & Discussion] kermirz:
hello, I have one problem. when I enable serial on factory mode, when i close this and open again, serial is off...
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
THe download links on https://jamal2367.com/ seem down. Timeout. Any mirrors?
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
Ok, I found the files in this thread: https://xdaforums.com/oneplus-7-pro/help/force-enable-volte-vowifi-t3934227

But unlike stated in this tutorial I don't have Telefonica_UK_Commercial in my list in the PDC program.

I have a Oneplus 3 with OxygenOS 9.0.4.

See attachment.

Edit: Ok, in this Thread for the Oneplus 6 https://android-hubo.de/thread/8127...ten-de-en-ohne-root/?postID=206789#post206789 I found out, that you are supposed to use the H3G_Denmark_Commercial profile. (deactivate "OEM_Overseas_noCDMA_Commercial"

Edit2: Confirmed: VoLTE and VoWifi works with Winsim (Telefonica/O2) with profile H3G_Denmark_Commercial
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
On OP7Pro with latest firmaware 9.5.9, dialing *#801# as no effect now.

It is another dial code or apk for enable pdc ?
[OnePlus 5T  Guides, News, & Discussion] fehrcomp:
On op6t just the op-dialer works. With google dialer it's not possible to ecexute the codes.

Maybe this hint help you.
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
I use op dialier, not google dialer.

It work until firmware 9.5.7, with latest, it don"t work...
[OnePlus 5T  Guides, News, & Discussion] haxelmans:
https://xdaforums.com/showpost.php?p=79868445&postcount=188
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
It work great... thank you
[OnePlus 5T  Guides, News, & Discussion] alfagamma01:
It doesn't work on o+6 with latest firmware to.

I pick new settings and after reboot are still the defaults.

Στάλθηκε από το ONEPLUS A6003 μου χρησιμοποιώντας Tapatalk
[OnePlus 5T  Guides, News, & Discussion] gdlin:
[MENTION=4977129]dagoban[/MENTION] please update the list and add Claro Argentina (Claro is in all south and central america). It's working both VoLte and VoWifi in both sim cards with the Telefonica UK setting.

Thanks !!
[OnePlus 5T  Guides, News, & Discussion] kermirz:
Hi guys. It's doesnt work on my op6. When I enable serial on factory mode, close it and again open, serial is off. Someone have any idea how I can enable this?
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
You just leave serial and full port switch with the app opened like that while connected to the PC. Do your thing in the PDC program then when you are done, you can disable serial and full port switch again and tab out of this mode with the home button.
[OnePlus 5T  Guides, News, & Discussion] kermirz:
I tried and doesnt work
[OnePlus 5T  Guides, News, & Discussion] shadowking001:
I can confirm it works great on OP6T, OxygenOS version 9.0.15, Orange in Belgium.

Seems like my SIM card was already VoLTE compatible.

But :

- VoWIFI shows up only when I scroll down the top menu, on the start page it doesn't show in the status bar

- VoLTE shows as long as I'm relying on mobile data
[OnePlus 5T  Guides, News, & Discussion] haxelmans:
And wich profile are you using?
[OnePlus 5T  Guides, News, & Discussion] shadowking001:
I'm using Telefonica_UK_Commercial.

And meanwhile I figured out my problem with VoWIFI, the icon didn't show up because I had the battery percentage displayed with figures, as soon as I came back to the classical battery icon (or circle one), the VoWIFI was here.

By the way I didn't notice any great increase of the sound quality, but the sound was already clear without it, so...

Yet, when I call someone, the dial is upper fast, I had a blank time of 2-3 seconds before.
[OnePlus 5T  Guides, News, & Discussion] ma678:
That's because of VoLTE.
[OnePlus 5T  Guides, News, & Discussion] n0j0e:
If anybody knows a solution to switch VoLTE/VoWIFI via Tasker on a OnePlus OxygenOS please share it!

Sent with much love & Android. OnePlus 5T OB33
[OnePlus 5T  Guides, News, & Discussion] alfagamma01:
I am back with my question again.

Can I use 2 different profiles for each of my sim cards? For example, first Sim let's say 3hg Denmark and second sim Vodafone India.

Στάλθηκε από το ONEPLUS A6003 μου χρησιμοποιώντας Tapatalk
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
Maybe someone knows what Sub0 and Sub1 mean in the program? If this relates to sim slot 0 and slot 1, then this could be an option for you.
[OnePlus 5T  Guides, News, & Discussion] namruuh:
Same here, anyone here able to provide us with working downloads?
[OnePlus 5T  Guides, News, & Discussion] haxelmans:
https://mega.nz/#F!fHYBmSyK!l02_iDgQ4qAFZdWjLJjK9Q
[OnePlus 5T  Guides, News, & Discussion] Vietoonet:
It Worked ! For info, for french RED SFR, users have to activate the volte option (we have to contact RED SFR to do this)
[OnePlus 5T  Guides, News, & Discussion] MetalSir:
Still no one got this thing working with Vodafone Italia?
[OnePlus 5T  Guides, News, & Discussion] diederikmo:
working => belgium telenet.

just Vowifi doesn't work
[OnePlus 5T  Guides, News, & Discussion] Evan06:
Hi ! wich profile are you using, and is VoWiFi working ?
[OnePlus 5T  Guides, News, & Discussion] repulse:
VoWiFi works too ?
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
VoWIFI work well with RED SFR with profile "France-Commercial-Orange" :D
[OnePlus 5T  Guides, News, & Discussion] repulse:
Nice ! OP5T ?
[OnePlus 5T  Guides, News, & Discussion] Le_Matriciel:
No, OP7Pro
[OnePlus 5T  Guides, News, & Discussion] repulse:
Will try with OP5T, nothing to lose.

Edit : hum, no "France-Commercial-Orange" profile on OP5T
[OnePlus 5T  Guides, News, & Discussion] dwardo:
Isn't on the OP6 or the OP6T either unfortunately...
[OnePlus 5T  Guides, News, & Discussion] Vietoonet:
For OP5T try with India profile like said on OP, seems to work.
[OnePlus 5T  Guides, News, & Discussion] repulse:
Yeah, it works for VoLTE but no VoWiFi
[OnePlus 5T  Guides, News, & Discussion] Wawax:
Hey everybody what can I do when pdc doesn't detect my phone ?
[OnePlus 5T  Guides, News, & Discussion] n0j0e:
Be sure you have only the Qualcomm drivers installed & USB-Debugging is on in Developer Options.

Sent with much love & Android. OnePlus 5T OB33
[OnePlus 5T  Guides, News, & Discussion] Wawax:
I do that already but nothing
[OnePlus 5T  Guides, News, & Discussion] renzs:
Have you done step 4 in OP? And also run PDC as Administrator?

Recently this was my mistake after 9.0.7
[OnePlus 5T  Guides, News, & Discussion] Wawax:
I try and I leave a comment on
[OnePlus 5T  Guides, News, & Discussion] Svid:
Just want to share a carrier update for the confirmed list (Telefonica_UK_Commercial)

Israel - Partner

VoLTE works with no issues

VoWifi - No issues

Device: OnePlus 6T (but should work on all other oneplus devices as partner have volte provisioned)
[OnePlus 5T  Guides, News, & Discussion] Wawax:
Don't work again what can I do ?
[OnePlus 5T  Guides, News, & Discussion] schturman:
HI to all.

Can someone share the setup and QPST? Both links from the first post not work, can't download it.

Thanks

P.S. Never mind, already found here:

https://xdaforums.com/showpost.php?p=77857440&postcount=447
[OnePlus 5T  Guides, News, & Discussion] schturman:
I did all from the first post and it looks like it work (7 pro and 5T). I see VoLTE icon in the status bar, but never saw the VoWIFI icon when I connected to my wifi network.

Both option activated in the setting... Yesterday I asked my provider to open VoLTE and he did it. For VoWIFI I also need to ask my provider ?

Can someone know what to do ?

Thanks
[OnePlus 5T  Guides, News, & Discussion] ma678:
You may ask your provider to provision both features on your account.
[OnePlus 5T  Guides, News, & Discussion] schturman:
Hi agian.

OK, I spoke with my provider and they opened VoLTE and VoWIFI on all my accounts.

Now the 5T work perfectly and show both icons when it should be, but on the 7Pro, it only show me VoLTE (when possible) and when I connected to wifi this icon disappear, but icon of VoWIFI not appear and I don't understand why... Maybe it's just icon that not appear, but service is working ?

I checked the sim card from 7PRO on 5T and both icons appeared (when needed). I put back my sim to 7PRO and only VoLTE appeared and when I on my home wifi, he is disappeared.

I used Telefonica_UK_Commercial like in the first post and today I also tried on my 7PRO the India-VoLTE-Vodafone and Netherlands-VoLTE-Vodafone, but got the same result, only VoLTE icon...

Any idea ?

Country: Israel

Setting used: Telefonica_UK_Commercial

Provider: 012mobile

OP 5T: VoLTE and VoWIFI work without any problem.

OP 7Pro: only VoLTE appeared.
[OnePlus 5T  Guides, News, & Discussion] n0j0e:
If i use Google Phone with a VoWIFI call i see in the dialer screen "Wlan-Call with o2" on top!

Sent with much love & Android. OnePlus 5T OB33
[OnePlus 5T  Guides, News, & Discussion] schturman:
I tried to call when I connected to home wifi, but don't see nothing like this on the dialer screen, just simple call.
[OnePlus 5T  Guides, News, & Discussion] Svid:
You can try the India profile.
[OnePlus 5T  Guides, News, & Discussion] schturman:
Already tried and also 12-13 another profiles, but always the same result, only VoLTE.
[OnePlus 5T  Guides, News, & Discussion] Jyjec:
Got it working on the Oneplus 5 on the Koodo network in Canada, you first have to call Koodo and get them to add the VoLTE service on your line (free), then toggle Volte_OEM_PTCRB. I'm assuming it would be the same for Telus since Koodo is a sub brand of Telus.

Edit: I also got the VoLTE working on my wifes 5T using the same settings unfortunately the VoWIFI is not working on either.
[OnePlus 5T  Guides, News, & Discussion] ma678:
Good news!

What is volte_oem_ptcrb? Profile name? Will try it out tonight.

Thanks.
[OnePlus 5T  Guides, News, & Discussion] Jyjec:
That's for step 7 you find volte_oem_ptcrb and enable sub 0 and sub 1
[OnePlus 5T  Guides, News, & Discussion] ma678:
I don't recall if the profile was there before. Will definitely check if it works with Freedom Mobile on my 6T.

Thanks

Edit: no luck. It doesn't work.
[OnePlus 5T  Guides, News, & Discussion] ma678:
Would you like to share your settings under Access Point Names?

Thanks
[OnePlus 5T  Guides, News, & Discussion] Jyjec:
I highlighted the appropriate line, so I got the VoLTE working but not the VoWIFI
[OnePlus 5T  Guides, News, & Discussion] Jyjec:
[MENTION=4977129]dagoban[/MENTION]

Im assuming Sub0 is Cellular and Sub1 is WIFI ?
[OnePlus 5T  Guides, News, & Discussion] ma678:
I changed the profile. Still not working.

Thanks
[OnePlus 5T  Guides, News, & Discussion] Jyjec:
Have you tried different profiles? I had to try 5 or 6 different profiles before it worked I also had to talk to Koodo to add the service on the line, it's probably a similar situation with your carrier.
[OnePlus 5T  Guides, News, & Discussion] ma678:
My provider has enabled both volte and WiFi calling on my line. I have tried almost every profile. None seems working so far.
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
On my Oneplus 3 it worked, but somehow it suddenly stopped working yesterday. I don't know why.

Ok now I know why:

It somehow reverted to "OEM_Overseas-NoCDMA-Commercial" which is the standard-setting.

I set it to "H3G_Denmark_Commercial" again, now it works again.
[OnePlus 5T  Guides, News, & Discussion] TonioLA:
Reset Network settings

Hi friends. Is there any way to reset this ?

I am now on e network that gives volte and vowifi on OnePlus by default (Bouygues)

Also it behave weirdly. Despite I am on wifi connection. Vowifi rarely shows. And most of times it turns back to volte after a couple of seconds. Like volte is forced over vowifi.

Is there a way to ensure my settings are factory?
[OnePlus 5T  Guides, News, & Discussion] ma678:
Why not select the profile directly?
[OnePlus 5T  Guides, News, & Discussion] junk007:
...assuming that you have the OOS, I am on RR-Pie (rom) not working, unable to make the switch to that specific USB mode...

__And its on Post 1 ..sigh

nevermind
[OnePlus 5T  Guides, News, & Discussion] Polarfuchs:
Did you guys find out how to make the change permanent? Every time the phone reboots because of a hickup, the VoLTE and VoWifi function is off again and I have the switch the profiles from default back to "H3G_Denmark_Commercial" again.
[OnePlus 5T  Guides, News, & Discussion] ratelutz:
You have to delete the default profile. It will be activated during a reboot as long as it exists
[OnePlus 5T  Guides, News, & Discussion] ThomasKrd:
We delete the default profile but it reappears after a reboot. We need a way to delete it permanently.
[OnePlus 5T  Guides, News, & Discussion] 1695:
Hi,

I'm on a OP5 over RED (SFR) operator in France. VoLTE and VoWIFI work with that network on OP6/7 by using Orange or Bouygues profiles.

Those profiles are not listed in QPST/PDC since they are not embed on the OP5 system image (only on OP6+).

==> Quick thought : could it be possible to patch NON-HLOS.bin of the OP5 by adding the right mcfg_sw.mbn from the OP6/7 images and the corresponding lines in mbn_sw.txt, then flash it on the OP5 ?

OP5 9.0.8 gives :

firmware-update\NON-HLOAS.bin >> image\modem_pr\mcfg\configs\mcfg_sw\

|_ generic\<region>\<mbn files>

|_ mcfg_sw.txt

OP6 9.0.8 gives :

payload.bin >> modem.bin >> modem\image\modem_pr\mcfg\configs\mcfg_sw\

|_ generic\<region>\<mbn files>

|_ mcfg_sw.txt

Both NON-HLOS.bin and modem.bin are - I guess - zero-padded, giving an error on simpel 7zip extraction (bad end of file). I guess the final image should have some exact size for the flash to succeed.

Idea ?
[OnePlus 5T  Guides, News, & Discussion] dwardo:
Having a OP6T I can sgare some negative feedback

* No orange profile

* Bouygues profile but volte and vowifi do not work with it
[OnePlus 5T  Guides, News, & Discussion] 1695:
Orange profile is on OP7 only, my bad : France_Commercial_Orange

Moreover, what carrier do you have ?

If I can get Bougyues' Profile on my OP5 on QPST-PDC, I would have absolutely no hesitation switching from Red to Bouygues.

So the question remains : would it be possible to patch OP5 image with OP6+ mcfg_sw.mbn/mcfg_sw.txt and flash it back on OP5 ?

How to check the image size with padded zero ?
[OnePlus 5T  Guides, News, & Discussion] wholehog2:
I have a 5T and use Telefonica-UK-Commercial on bouygues telecom carrier. All work fine. Did you test it?
[OnePlus 5T  Guides, News, & Discussion] 1695:
I have no problem getting VoLTE working on several profiles on the OP5. That's not the point ;).

I'm trying to figure out a global method (more than a specific carrier/profile) to get any profile on the OP6+ available on OP5/5T through QPST-PDC.

Moreover, even though I can get VoLTE working easily, VoWIFI is a bit trickier. The only trace of it working on my current carrier (Red-SFR) is on OP7 with Orange profile. If I could get that OP7-specific profile to show on my OP5 I could test it.

And this method could benefit to many more ;). That's why I'm trying to patch OP5's modem with ulterior model's mbn (without modifying the rest of the OP5 firmware).

On a sidenote : do you have VoWIFI working on Telefonika over Bouygues' network ?
[OnePlus 5T  Guides, News, & Discussion] dwardo:
RED by SFR.

I have Volte through Telefonica UK profile but no vowifi

Fir the rest I don't know... But woukd love to have the 7's Orange profile on my 6T...
[OnePlus 5T  Guides, News, & Discussion] 1695:
So same as me (RED, VoLTE OK, no VoWIFI).

Let's hope someone goes by and can help me patch the NON-HLOS.bin correctly to determine feasibility of this method.

EDIT : Someone managed to do it here.

EDIT 2 :

Okay so I tried patching OP5's NON-HLOS.bin by adding OP6's Bouygues's MBN and OP7Pro's Orange MBN, without modifying filesize and then flashing it with fastboot flash modem NON-HLOS.bin.

Flashing went OK, booting too. But then, no SIM detected and main button wasn't working either.

Tried removing /data/misc/radio, no change.

Plus, I could no longer use QPST PDC : phone was listed but QIM error when trying to load profiles.

So no success here BUT : the process I used to patch NON-HLOS.bin was - to say the least - laborious. I'm not as at ease with UNIX as I was before... I might have done things (very) wrong.

Plus, I guess there are some stuff that should be edited on vendor.bin too, but that's above my skills.

The link I posted in the first EDIT serves as a proof of concept.

I'll upload the MBN files if - by chance - someone more skilled with Android/UNIX would liek to give it a try.
[OnePlus 5T  Guides, News, & Discussion] mnjsamare:
Nothing appears after the point 6. MCFG_PDC list is empty