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[GUIDE] Activate VoWiFi / WLAN Call

First of all a BIG thanks to ed-gonzo
He made this possible
This is the instruction to activate VoWiFi / WLAN Call on the Poco F1
Its tested and verfied to work with EU ROM (Oreo , Pie and Q based) and german provider o2 (Telefonica)
Before you read on i want to make clear that I am not responsible for bricked devices !
Basic requirements are root rights to do this mod
Maybe latest 2020 Qualcomm Diag QD-Loader Windows 10 Drivers signed are needed for this to work.
!!! Before doing this Mod you should backup EFS-partition !!!
- download QPST tool and install
- enable USB debugging in Developer settings
- now either go to terminal app and type:
Code:
su
setprop sys.usb.config diag,serial_cdev,rmnet,adb
or
adb from PC
Code:
adb shell
su
setprop sys.usb.config diag,serial_cdev,rmnet,adb
- connect Poco F1 with original USB cable to PC
- start PDC (from QPST tool) on PC
- Poco F1 should be recognized by PDC (if not install Qualcomm driver and check Device Manager)
- activate corresponding profile (in case of german o2 its DT_Greece)
- install VoLTE & VoWiFi Enabler Magisk module (optional) or activate setting with dialer code *#*#869434#*#*
- restart Poco F1
- Voila

FAQ:
Q: What are the requirements for VoWiFi
A: A provider resp. plan which includes VoWiFi
Q: How to know if VoWiFi is working ?
A: Put phone in airplane mode and reactivate WiFi only. If you are able to make a call then VoWiFi is working.
Q: Does this only work with MIUI ROM ?
A: No ... its reported to work also on Custom ROMs like LOS, crDroid ...

Thx for this guide! Have been waiting for this.
Does this work with custom ROM (LOS)?
in case of german o2 its DT_Greece? are you sure? german carrier and greece?

saski4711 said:
Does this work with custom ROM (LOS)?
Click to expand...
Click to collapse
in german forum there is a user who has it running.... but it seems that LOS has no icon for VoWiFi
But nlow ...
saski4711 said:
in case of german o2 its DT_Greece? are you sure? german carrier and greece?
Click to expand...
Click to collapse
yes indeed DT-Greece for german o2
I have it up and running ...

der_Kief said:
in german forum there is a user who has it running.... but it seems that LOS has no icon for VoWiFi
But nlow ...
yes indeed DT-Greece for german o2
I have it up and running ...
Click to expand...
Click to collapse
Ok thx will give it a shot as soon as I get access to a windoze PC :highfive:

Ok this definately didn't work on my Poco-f1 with latest LOS16 and 8.11.15 vendor/fw. Funny thing that VoLTE now seems to be gone (Device switches back to H+/E). Got it back by restoring efs. Has anyone else been successful with this running custom ROMs? Even without this "hack" I have been able to activate VoWIFI after 8.11.5 update but it didn't work so I guess this depends on FW version.
Two things - a little offtopic though: Any Idea if this can be tried on the MiA1? I suspect that xiaomi doesn't include support in it's firmware for this device at all and I 'm afraid to cripple both my devices (Poco and MiA1) at the end .
Has anyone had success getting HDVoice with BT headsets on the Poco-f1 with custom ROMs? Sorry for asking this here but in the LOS thread I seem to get ignored with this question / bug report.

@saski4711
to bad that its not working for you.
It defintively works with EU ROMs based on Oreo or Pie.

Double post
*deleted*

der_Kief said:
@saski4711
to bad that its not working for you.
It defintively works with EU ROMs based on Oreo or Pie.
Click to expand...
Click to collapse
Yeah bummer. Will give it another shot the next days maybe I messed up somewhere. Isn't this device supposed to get VoWIFI by default with the Pie update anyway? Maybe this will work OOTB with final pie?

not works with EU pie rom to me too. from Sri Lanka we have VOWIFI network. tried switching many profiles but not works .

saski4711 said:
Isn't this device supposed to get VoWIFI by default with the Pie update anyway?
Click to expand...
Click to collapse
Dont know ... i'm on Stable EU ROM 10.0.6.0 (based on Oreo)

I know for sure it worked out of the box after pie update on stock beta with a service provider in Greece.
Can make settings appear with *#"#vowifi#*#* but being in India don't think providers support vowifi so doesn't work.

sanjay0501 said:
I know for sure it worked out of the box after pie update on stock beta with a service provider in Greece.
Can make settings appear with *#"#vowifi#*#* but being in India don't think providers support vowifi so doesn't work.
Click to expand...
Click to collapse
How can you be sure then?
Enabling the VoWiFi option doesnt mean its working !

der_Kief said:
How can you be sure then?
Enabling the VoWiFi option doesnt mean its working !
Click to expand...
Click to collapse
2 diff statement.
Can enable with code but doesn't work in india.
It worked for a friend in Greece without doing anything immediately after pie update.
What I was suggesting that maybe and just maybe if provider supports it ,vowifi can be enabled simply by code.

It is working perfect. I did some test calls on wifi. Thumb up..... BTW I'm on German Telekom D1

SatBandit said:
It is working perfect. I did some test calls on wifi. Thumb up..... BTW I'm on German Telekom D1
Click to expand...
Click to collapse
could you please tell us which ROM you are using and which profile you activated within PDC ?

I'm using 8.11.27 global beta and I modified the DT_greece section. Set sub0 and sub1 to active.
Opened dialer and dialed *#*#vowifi#*#*

ok this works, just needed a bit more work for WoWiFi in my case
after a reboot it kept returning to my default carrier config (VoLTE working just fine anyway)
so what I did was to remove my carrier config from within PDC Tool, just that by doing that it defaulted to a non-VoLTE config
well, removed that also and this time it kept DT_Greece config on both subs
VoLTE works and VoWiFi also (carrier Orange Romania)
ps. don't restart phone if you want to test new configs
just click on activate and enter airplane mode then exit (keeps testing faster)

I've gotten as far as I can with my Mi Mix 2S, works on both AOSP and MIUI to allow the radios to be enabled, and the settings to appear in MIUI (AOSP usually shows them anyway).
With this said, I tried only enabling the WiFi option on the carrier that already had the sim activated...
I see many people here on different carriers in the EU who enabled the DT_Greece options and voila. Is this an accurate conclusion? I'm wondering if I just need an answer from a carrier other than my own to acknowledge the WiFi option exists to turn it on? Being in the US it seems as if the DT_Greece config could cause some problems, but it's not an option in my list. I don't know at this point.
Edit:
Tried all the US bands and even a few others, specifically ones that said WiFi. None worked so far, I'm going to cry! :crying::crying::crying:

I tried this on a Redmi Note 5 Pro but after selecting the device in PDC it throws an error message and doesn't show the list of carriers.
I've tried QPST 2.7.420 and 2.7.474 and a couple different pie roms, windows 7 and 10 but it always fails.
I can use EFS Explorer and dump the NV data just fine though...

Solved- activate VOLTE (via root)?

Has anybody tried to activate VOLTE via PDC/QPST? I tried it, but no luck, because of errors at PDC.
I used this: https://www.xda-developers.com/how-to-enable-t-mobile-volte-vowifi-on-asus-smartphones-root/

I got it to work and even saw the VOLTE logo at the top. However....Wifi would not stay toggled on and the phone dialer would crash everytime you made a call.

wud_e said:
I got it to work and even saw the VOLTE logo at the top. However....Wifi would not stay toggled on and the phone dialer would crash everytime you made a call.
Click to expand...
Click to collapse
What where your steps? QPST used?
On Android 11 the volte.apk doesn't work anymore. So I can't bring the phone in PDC mode.

Seosam said:
What where your steps? QPST used?
On Android 11 the volte.apk doesn't work anymore. So I can't bring the phone in PDC mode.
Click to expand...
Click to collapse
Yeah I just realized that as well. I didn't use QPST just unrooted and then the app which unlocked VOLTE, VOWIFI and another option. I switched to Android 11, rooted and discovered that the apk no longer works for me.

I finally got it working. Tomorrow I will write a tutorial.

Seosam said:
I finally got it working. Tomorrow I will write a tutorial.
Click to expand...
Click to collapse
Here is the guide:
[Guide] activate Volte on Android 11 (root)
Finally I got it working on ww_30.40.30.96 on German carrier O2. I used most of the Guide from @HomerSp : https://forum.xda-developers.com/t/guide-enabling-volte-vowifi-v2.4028073/ requirements: adb for PC QPST latest EFS Tools from JohnBel...
forum.xda-developers.com

How To Guide [TMO] OOS/COS DATA FIX

TO CLARIFY THIS IS A ROOT ONLY FIX​After gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end ​

Can confirm this worked and solved my stupid "no sim" error after upgrading from 11.10.10 global to c44.

Worked perfectly on TMobile converted to global. With the issue of having no signal after 12 update.
Thank you @twinnfamous for making the module and thank you @Libra420T for sharing !! You both saved my A$$!

Is this the only way to get data working? I have a NA global variant that doesn't support dual SIM and seems to have the same issue. Honestly really liking ColorOS besides this... I usually don't root but if I don't have a choice, I guess that's what I'll do.

Thanks much. This worked perfectly after I figured out how to root C.62!

Libra420T said:
TO CLARIFY THIS IS A ROOT ONLY FIX​After gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end ​
Click to expand...
Click to collapse
thanks so much! I reflashed with msm multiple times and then kept upgrading to 12 since I thought I was doing something wrong, this fixed the SIM issue. now working great!

Hey dear my device OnePlus 9 T-Mobile
After rollback to stock T-Mobile
By unbrick msm tools
Stock T-Mobile not like first time
Sim card always disconnected and reconnected . Any solution?

This is support a Indian firmware?

badlucky said:
Hey dear my device OnePlus 9 T-Mobile
After rollback to stock T-Mobile
By unbrick msm tools
Stock T-Mobile not like first time
Sim card always disconnected and reconnected . Any solution?
Click to expand...
Click to collapse
You need to make sure that the msm tool manager is for your version that shipped with your phone, as well as the right android version number. Only then will you be able to generate a modem from your service provider.
If that doesn't work, I would try to msm to different versions of your T-Mobile vairent (LE2117). You should have rolled back to like 11.2.2 unless you have the Indian version. Idk what the first version was. my guess is that you used an msm tool that didn't include the Indian T-Mobile vairents.

Dear . I'm use msm to flash global firmware then im rollback to T-Mobile
This file sim card fix only on global firmware? Or for both (glo & India ) .
? Any new T-Mobile msm tools ?

Libra420T said:
TO CLARIFY THIS IS A ROOT ONLY FIX​After gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing muli sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .
Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end ​
Click to expand...
Click to collapse
Hey dear . Update to a12 last version c63 with ota update or local update?

Phoenix47 said:
Will it work on coloros 13 open beta ?
Click to expand...
Click to collapse
Yes it does. Beware that you may lose VoLTE, 5G, and WiFi calling though.

Phoenix47 said:
I don't even use any of them.
Click to expand...
Click to collapse
What carrier do you have? I had to go back to OOS because no US carrier works right without VoLTE now. Couldn’t make or receive calls unless my phone was on 3G (T-Mobile). Went back to OOS and then switched to my 12 Pro Max. Waiting for the Pixel 7 Pro announcement to decide if I’m going to that or getting a 14 Pro Max and saying goodbye to Android (again - my OnePlus 9 is the first Android I had since 2017 when I switched). All I know is I’m over this device.

dual sim will work?
sim issues solved from Android 13?

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