After over a week of trying, I've come up with a solution to enable WiFi Calling (probably also VoLTE) in Fulmics ROM for LG G6 and probably G5 running any stock based ROM.
THIS GUIDE WILL ONLY WORK IF YOUR DEVICE IS ON THE LIST OF YOUR CARRIER'S VOWIFI/VOLTE SUPPORTED DEVICES AND THE SERVICE IS ENABLED THROUGH AN OTA UPDATE FOR YOUR STOCK, BRANDED ROM PROVIDED BY YOUR CARRIER!
I don't believe in magic, you shouldn't either so don't think this guide will make VoWiFi/VoLTE work on your device regardless of your carrier's support for your phone model.
Also, if your provider offers VoLTE/VoWiFi through an external app available in Play Store, don't bother reading any further.
General idea described in this guide is to tweak your rom in a way that it is recognized by your carrier as their own VoLTE/VoWiFi enabled build that has a "green light" for IMS and Xcap apns registration in your provider's VoLTE/VoWiFi service. During my attempts you make the service work on my G6 running V10t based Fulmics ROM i discovered that adding IMS and Xcap apns plus getting all the IMS and GPRI VoLTE/WoWiFi hidden menu settings right is not enough. I had everything set up right and still couldn't make a WiFi call. Then it occured to me that maybe i can't make it work because Fulmics ROM is based v10t, and my provider's VoLTE/WoWiFi enabled rom is the v10h? So i tweaked Fulmics 1.6, then 2.0 so it masks itself in front of my provider as v10h while in fact it still is v10t Fulmics ROM 2.0. And guess what... IT WORKED!!! My Carrier's IMS and Xcap apns, manually added by me to the default open-eu apn list storred in /system/etc/apns-conf.xml, got registered in the service activating WiFi Calling on my device.
How to do it step-by-step guide below
1. PREREQUISITES:
- /OP/[YOUR CARRIER'S CUST FOLDER IN XXX_XX NAME FORMAT] in your main dir /root. If you only have OPEN_EU in your /OP you must get your carrier's specific cust folder or install Fulmics over your carrier's VoLTE/VoWiFi enabled rom then the cust folder you need will appear in /OP
- build.prop file from your Carrier's VoLTE/VoWiFi enabled rom for your LG model (make sure following line is in the file: ro.lge.cupp_capss.rootdir=/OP
- /OP dicectory in your device main root directory with your carrier's VoLTE/VoWiFi enabled ROM's subfolder (XXX_XX format). OPEN-EU or
GLOBAL-COM are not the ones .
- files from your carrier's rom: /root/data/ipsec/wo_apn.conf, /root/data/ipsec/wo/apn_xcap.conf
(You can try without those 2 files if you can't get them).
2. TO DO:
!!! AT SOME POINT OF CHANGING STUFF LISTED BELOW YOU WILL GET ALOT OF FC OF VARIOUS APPS. DON'T PANIC, JIST REBOOT YOUR DEVICE AND CARRY ON WITH CHANGES !!!
- in /OP directory delete folder _COMMON if you have one
- in /OP directory create a new directory called SUPERSET and set perms to 755
- copy all content from your carrier specific folder in /OP to SUPERSET. You can also just try renaming cour carrier's folder to SUPERSET instead of creating new filder and copying stuff to it.
- edit cust_group_mapping.cfg in /OP and change whatever you have after = to GLOBAL-COM
- open cust_path_mapping.cfg in /OP and make sure you have 999999,99=/OP/SUPERSET there on the list of providers
-edit official_op_resize.cfg and add SUPERSET_SIZE=[copy size value of your carrier's folder which should also be listed in the file]
-in /OP/SUPERSET (with your carrier's files coppied) edit cust.prop and in second line in the file change whatever you have after = to SUPERSET
- edit your rom current build.prop file and copy all additional stuff (in my case it was all the Fulmics ROM part of build.prop so from #Software Version down) to the build.prop acquired from your carrier's VoLTE/VoWiFi enabled rom. Add the coppied stuff at the bottom of the list.
- add following lines at the end of stuff coppied to your carrier's build.prop from step above:
persist.sys.cust.lte_config=true
persist.lg.data.iwlan.enable=true
# Debug Options
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
# Radio Options
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
# applying GPRI auto-commit
ro.lge.radio_gpri=1
ro.lge.amrwb_gpri=1
wlan.lge.softap5g=false
# 2015-10-12 [email protected] LGP_DATA_IWLAN [START]
persist.lg.data.iwlan=1
persist.lg.data.iwlan.ipsec.ap=1
# 2015-10-12 [email protected] LGP_DATA_IWLAN [END]
Save the build.prop file and place it over your current system default build.prop. set perms to 644
- open your device's hidden menu, go to
Field Test->GPRI VoLTE/VoWiFi->UX and tick 3rd, 4th, 5th, 6th and 9th for WoWiFi only, all except 8th for VoLTE/VoWiFi and 1st and 2nd for VoLTE only.
- go to your apns in network settings and make sure you have all the apns needed (in my case the are: internet, mms, ims and xcap). If you don't have them, try sending settings request message to your carrier's apn service center, if that doesn't help, add the apns manually (you must find your carrier's specific manual settings on the internet). You can also edit /system/etc/apns-conf.xml file and add missing apns manually to the list in above file. To do that you must find your carrier's apns on the list first, (list order by MCC-MNC code) under your carrier's last apn enter your VoLTE/VoWiFi apns in the same way the other apns in the file are typed.
-save apns-conf.xml, go back to apn list in network settings, tap overview->restore defaults and the missing apns you added to your xml file should appear on the list in network settings.
-make sure you have all permissions right of the created/coppied/edited files and reboot your device.
When your phone boots back up to Fulmics you should have your carrier's boot animation instead of default LG one, then you should see initial boot screen with "android is setting up" for a couple of seconds, then your homescreen. When configuring of your sustem is done, open quick settings and your VoLTE and WiFi Calling tiles should appear there. Turn on what you want and test if it's working. Remember, with VoWiFi you must have both WiFi and WiFi calling ON. The easiest way to tell if WiFi Calling is active is the presence of a headphone with little WiFi icon on the status bar and other places in your dialer etc. To test, turn on airplane mode, wait till WiFi gets turned off, turn it back on in airplane mode, wait for WiFi calling icon on status bar and try to make a call with airplane mode on .
REMEMBER! This guide will will only work if your carrier verifies WiFi enabled devices by 3 conditions: 1. Device supported, 2. Apns present, 3. ROM build match (info from build.prop).
I might have forgotten about something (or not ) but will edit if or when questions start to be asked
A picture of WiFi Calling working on my device with Fulmics rom 2.0 below. (WiFi Calling icon next to WiFi icon in status bar.
@mrbeem tried flashing back the kdz trough lgup but in OP i found only three folders: _COMMON, lost+found and OPEN_EU, plus a lot of individual files.
Any clues? Can you specify what files the operator folder should contain? Thanks in advance!
Killua96 said:
@mrbeem tried flashing back the kdz trough lgup but in OP i found only three folders: _COMMON, lost+found and OPEN_EU, plus a lot of individual files.
Any clues? Can you specify what files the operator folder should contain? Thanks in advance!
Click to expand...
Click to collapse
What rom did you flash in LG UP? Was it your provider's stock ROM with WiFi Calling service enabled or was it Open EU rom? OP should contain your carrier's config files of you flash your provider's ROM. The files should be in a separate folder with your Carrier's name (for example, Vodafone Italy should have a folder in /OP named VDF_IT etc.). Carrier specific folder should contain subfolders called: config, overlay, apps, media, poweron, poweroff. Most impostant are: config and overlay. Also in /OP there should be 3 files apart from the subfolders: cust.prop, official_op_resize.cfg and except_buyercode.cfg
Pics of content of cust.prop and official_op_resize.cfg from my carrier's folder (P4P_PL)
mrbeem said:
What rom did you flash in LG UP? Was it your provider's stock ROM with WiFi Calling service enabled or was it Open EU rom? OP should contain your carrier's config files of you flash your provider's ROM. The files should be in a separate folder with your Carrier's name (for example, Vodafone Italy should have a folder in /OP named VDF_IT etc.). Carrier specific folder should contain subfolders called: config, overlay, apps, media, poweron, poweroff. Most impostant are: config and overlay. Also in /OP there should be 3 files apart from the subfolders: cust.prop, official_op_resize.cfg and except_buyercode.cfg
Click to expand...
Click to collapse
The OPEN EU that Bridge downloads when my phone is connected, and is the same one which is referred as "Vodafone Italy" on LG Firmware.
In /OP i have these files: op_list, official_op_resize, custom_path_mapping, custo_group_mapping, client_id, buerycode, strangely are almost the same found on fulmics.
In Open_EU i've overlay and config folders, and these files: official_op_resize.cfg, except_buyercode.cfg and cust.prop.
The strange thing is that the vodafone brand remains also with the fulmics, in fact at everye clean installation i found vodafone apps and vodafone configuration before restore my lgbackup, what a mess lol
Killua96 said:
The OPEN EU that Bridge downloads when my phone is connected, and is the same one which is referred as "Vodafone Italy" on LG Firmware.
In /OP i have these files: op_list, official_op_resize, custom_path_mapping, custo_group_mapping, client_id, buerycode, strangely are almost the same found on fulmics.
In Open_EU i've overlay and config folders, and these files: official_op_resize.cfg, except_buyercode.cfg and cust.prop.
The strange thing is that the vodafone brand remains also with the fulmics, in fact at everye clean installation i found vodafone apps and vodafone configuration before restore my lgbackup, what a mess lol
Click to expand...
Click to collapse
Ok so you have the everything. Just delete _COMMON filder, create SUPERSET and copy all from OPEN_EU to SUPERSET. Basicly follow the steps. Build.prop is most important part. Plus check if you have all apns needed for WiFi Calling, if not, add manually as described. It is a mess, but the key is to put that mess in an order that enables WiFi Calling. Carrier's boot animation on fulmics is a very good indication that you're on the right path to make it work. Just a small tip... Maybe start from the UI part to enable the ability to turn VoWiFi on/off and then the rest. This way you'll be able to see if or when your service becomes active. So.....
1. Copy this to your carrier's build.prop after you've coppied the Fulmics part:
persist.sys.cust.lte_config=true
persist.lg.data.iwlan.enable=true
# Debug Options
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
# Radio Options
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
# applying GPRI auto-commit
ro.lge.radio_gpri=1
ro.lge.amrwb_gpri=1
wlan.lge.softap5g=false
# 2015-10-12 [email protected] LGP_DATA_IWLAN [START]
persist.lg.data.iwlan=1
persist.lg.data.iwlan.ipsec.ap=1
# 2015-10-12 [email protected] LGP_DATA_IWLAN [END]
2. Replace stock fulmics build.prop with the one from your carrier's rom with Fulmics part and above lines added. Check permissions and reboot.
3. Ho to hidden menu Field Test->GPRI VoLTE/VoWiFi->UX and tick all ON apart from 1, 2 and 7. Go back to main hidden menu screen and to to Service Menu->WoWiFi and change value to 1.
4 reboot and check if you have WiFi Calling QS Tile added and WiFi Calling settings enabled in call settings.
mrbeem said:
Ok so you have the everything. Just delete _COMMON filder, create SUPERSET and copy all from OPEN_EU to SUPERSET. Basicly follow the steps. Build.prop is most important part. Plus check if you have all apns needed for WiFi Calling, if not, add manually as described. It is a mess, but the key is to put that mess in an order that enables WiFi Calling. Carrier's boot animation on fulmics is a very good indication that you're on the right path to make it work
Click to expand...
Click to collapse
This evening i'll try, thanks!
@mrbeem so i have done almost all the procedura, just one thing missing, apns. Do you know if there are any for vodafone? Mine is italy, but who knows, it could work with other vodafone ahahaha
Killua96 said:
@mrbeem so i have done almost all the procedura, just one thing missing, apns. Do you know if there are any for vodafone? Mine is italy, but who knows, it could work with other vodafone ahahaha
Click to expand...
Click to collapse
What apns do you currently have on the list?
Can you check what is your sim MCC-MNC CODE? Go to hidden menu, field test->SIM Info and check values under MCC and MNC. Is it 222 and 10??
mrbeem said:
What apns do you currently have on the list?
Can you check what is your sim MCC-MNC CODE? Go to hidden menu, field test->SIM Info and check values under MCC and MNC. Is it 222 and 10??
Click to expand...
Click to collapse
These three
Killua96 said:
These three
Click to expand...
Click to collapse
Ok. I found apns for you. There are 3 more to add. Give me an hour or so and i will make apns-conf.xml for you. Make backup of your apn-conf.xml file and when i send you new one you will just replace your file with mine, go to settings wi
th apn list (one from screen above) and hit restore defaults .
One more thing... Can you tap on the top apn from the list to open it? Then scroll down to see apn type , take a screenshot and post it here
mrbeem said:
Ok. I found apns for you. There are 3 more to add. Give me an hour or so and i will make apns-conf.xml for you. Make backup of your apn-conf.xml file and when i send you new one you will just replace your file with mine, go to settings wi
th apn list (one from screen above) and hit restore defaults .
One more thing... Can you tap on the top apn from the list to open it? Then scroll down to see apn type , take a screenshot and post it here
Click to expand...
Click to collapse
Here
Thanks for everything, hope it'll work xD
Killua96 said:
Here
Thanks for everything, hope it'll work xD
Click to expand...
Click to collapse
PM me with your email address and i will send you edited apns-conf.xml. replace your /system/etc/apns-conf.xml with the one i will send you, go to apn settings tap 3dots at the upper right corner and hit restore defaults and updated apns should come up. Don't forget to tap the empty circle on the right by your internet apn to set the top one as default. I've seen on your screenshot the circle is empty and it shouldn't be
Struggling to get wifi calling on my device. H870 Fulmics O2 UK
Spoke to O2 who told me it doesn't support wifi calling?!
Even though the app allowed me to turn wifi calling on etc?!?
Need help with this as I get no signal at work
Can anyone share me your volte/vowifi working OP files.
Zerter said:
Can anyone share me your volte/vowifi working OP files.
Click to expand...
Click to collapse
:highfive: +1 i need that files.
Isn't enabling WiFi Calling in hidden menu enough to make it work? It seems to be working for me.
[email protected] said:
:highfive: +1 i need that files.
Click to expand...
Click to collapse
Link to the files below. Instructions in .txt file inside the folder.
https://mega.nz/#F!4cdDzTBR!S-_R0c3niD1PsIiJAUwVPQ
Vatt`ghern said:
Isn't enabling WiFi Calling in hidden menu enough to make it work? It seems to be working for me.
Click to expand...
Click to collapse
Which ROM do you have installed?
Im using latest fulmics. And also i'm trying to create manually ELE_EE configuration. I have all information that i need from operator but not sure is it possible. Anyway i got this phone from LG baltics to do it.
I've posted on a couple of other related threads about this but thought a fresh thread directly asking the question might help.
I have a UK G5 bought recently secondhand, it was on VM but is now unlocked and works fine on the Three SIM I've tested it on. It's been upgraded OTA by the previous owner to Oreo.
So, what's needed to make it work with WiFi calling on Three UK, or for that matter EE? I've tried the Oreo Three RoM & the Oreo Open EU RoM. I enabled WiFi calling via ADB, but no matter what I try, no menu appears giving the option to activate or use WiFi calling. There's also a setting in the 'Hidden Menu' to toggle WiFi calling but that made no difference either.
Both of the non-VM RoMs complain about being used on the wrong carrier's phone, I know that can be fixed by removing some files in root, but what this tells me is that there are files or settings on the phone that don't get erased with a factory reset. Is it possible to get these files or settings from a Three UK G5 and put them onto another G5?
I did read on another thread that someone had got an ex EE phone working with WiFi calling on a Three SIM, that was with a Nougat RoM. I'm not too sure about trying this as I've seen a couple of stories about bricking due to flashing a lower numbered Anti Rollback RoM.
Any thoughts welcome.
I've loaded a Three UK Nougat RoM and can see that all of the VoWiFi settings via ADB & the hidden menu are on but cannot see any VoWiFI menus. My phone is on Three UK, I'm not sure if there's a menu item for WiFi calling though..
I found a couple of pointers relating to OREO:
https://forum.xda-developers.com/showpost.php?p=78463793&postcount=136
And here, plus a few posts further down on the same page
https://forum.xda-developers.com/showpost.php?p=78584284&postcount=175
I've had some success in enabling WiFi calling on my G5 H850, after getting some ideas from reading these threads and thought I'd share some info, maybe there's a better way of doing this, if so, am happy to learn:
1, about the misc partition
https://forum.xda-developers.com/lg-g3/general/how-to-change-region-t2904951/page8
2, misc partition location on the G5
https://forum.xda-developers.com/lg-g5/help/little-help-misc-partition-h850-t3671068
My phone was originally sold by Virgin Media in the UK, my SIM contract is with Three.
I changed a couple of settings in the misc partition to make my phone think it was from Three.
I take no responsibility for anything that happens if anyone tries this themselves!
1, Unlock the bootloader to gain root access
https://forum.xda-developers.com/lg-g5/development/official-european-lg-g5-h850-bootloader-t3363040
2, Get a copy of the misc partition via DD (see first & second links above)
3, Make a copy of the copy, name one of them 'master' and put them in a safe place
4, Edit the second copy via a Hex Editor
At location 00014000 you will find the phone's MCC & MNC, I changed mine to 23420 (UK H3G)
At location 000D7000 you will find the Buyer Code, I changed mine to H3G_UK
5, Save the updated misc partition & copy it to the phone's internal storage. The thread that I linked at the top, shows the misc partition being saved to the 'sdcard' which on my phone turned out to be the internal storage.
6, Overwrite the phone's misc partition with the updated misc partition with DD.
7, Lock the bootloader
8, Using LGUP, flash the official Three UK OREO ROM to the phone
9, Start the phone, chances are it will not start properly due to some stuff left over from unlocking, if so you need to boot into recovery and reset to defaults
10, After going through the initial setup, check the dialler app settings and see if the WiFi calling option is there.
Does anyone know the correct NTCODE and BUYERCODE to brand an unbranded H850 to Vodafone Germany? I want to try the branded firmware because it supports VoLTE and VoWifi out of the box. I followed the instructions in the previous post but it does not work. The original NTCODE and BUYERCODE are "1","FFF,FFF,FFFFFFFF,FFFFFFFF,11" and OPEN_EU. I changed these to "1","262,02F,FFFFFFFF,FFFFFFFF,FF" and VDF_COM , flashed back the misc partition and after that I flashed the vodafone KDZ. Factory reset was also done but it still does not load the branding in the VDF_COM folder on the cust partition. The software version is reported as V30f_EUR_XX instead of V30f_VDF_COM. Is there something else I have to do? A Vodafone SIM card with MCC 262 and MNC 02 is inserted.
el-sahef said:
Does anyone know the correct NTCODE and BUYERCODE to brand an unbranded H850 to Vodafone Germany? I want to try the branded firmware because it supports VoLTE and VoWifi out of the box. I followed the instructions in the previous post but it does not work. The original NTCODE and BUYERCODE are "1","FFF,FFF,FFFFFFFF,FFFFFFFF,11" and OPEN_EU. I changed these to "1","262,02F,FFFFFFFF,FFFFFFFF,FF" and VDF_COM , flashed back the misc partition and after that I flashed the vodafone KDZ. Factory reset was also done but it still does not load the branding in the VDF_COM folder on the cust partition. The software version is reported as V30f_EUR_XX instead of V30f_VDF_COM. Is there something else I have to do? A Vodafone SIM card with MCC 262 and MNC 02 is inserted.
Click to expand...
Click to collapse
I'm not sure why your patching did not work, but I have turned off WiFI calling on my G5 because the call quality over WiFi is terrible. It may be that I did not find all of the changes that are needed.
This guide is a copy paste from this thread:
[GUIDE] Switch software region to Upgrade to ColorOS 11 and enable Dual Sim.
I want to write this here so it's all in one place and not scattered around different threads. Apologies for the bad formatting in some parts as this is on of my first contribution. Most of this is copied from this thread: I am adding onto this...
forum.xda-developers.com
For my oppo find x 2 neo it worked.
I remind you that it precedes it and has your danger
I am not responsible for any damage or blockages
DISCLAIMER: Use this at your own discretion. So far, when it works, it doesn't wipe any personal data
and nearly no issues are caused. Still, I am not responsible for bricked devices, broken warranties or lost data.
If you haven't already, enable Developer Options and USB Debugging.
Next, download the Oppo_Free_Unlock_v1.0.zip file from the attachments and extract it somewhere.
Before you run anything, though, there's a little preparation that needs to be done.
Open Device Manager and expand the Network Adapters category.
Find your Ethernet adapter and double click it to open its properties.
Go to the Advanced tab and find the Network Address option in the Property pane.
Under the Value pane, select the radio button next to the text box and paste in the following: 704D7B61ABCD.
If you don't have an Ethernet adapter, try to find another network adapter here that has the Network Address property. It may help to install VirtualBox, since it will add fake Ethernet adapters.
Close the properties window and close Device Manager.
Go to where you extracted the unlock tools. Open Sec5.exe.
Make sure your device is in MTP mode, and then press the Unlock button.
After about a second, a string of numbers and letters should show up in the left pane. A few seconds later, "OK" should start flashing in the right pane. If it says "device not found" or something similar, make sure MTP Mode is activated. Press "Stop unlocking" and close the window.
Open the phone app on your device and dial *#3954391#. Then dial *#391#. A screen should come up with a whole bunch of regions listed. Choose this one: "Singapore Ex". Note: This Version has Theme Store, but no Ringtone Maker. Feel free to try other versions. EDIT: DO NOT CHANGE TO A REGION WITH CARRIER, ESPECIALLY THAILAND AS YOU WON'T BE ABLE TO CHANGE BACK! AT LEAST WHILE ON ANDROID 10. STICK WITH THOSE THAT END IN EX. Once you have done this, it appears that you can always bring up the region menu when dialing the numbers..
Your phone should now reboot. Once it's rebooted, your region will have changed.
Every time you changed region and want to change it again you need to use the software. You can get a code that you can use every time to change the region instead of using this software every time. (Update- one person report that this code(token) wont work for every time as his STAMP code changed.)
For this you need to: Open the dialer app , dial *#9434# ,press authtokendecrypt. You will see a IMEI and STAMP. Open the Sec5.exe and write the IMEI and STAMP shown on your phone in the blank space of the IMEI and STAMP in the software and press Generate a token, you will see a string of numbers and letters, write it on the token blank text box and click authtokendecrypt. Now you will see every text written in green. Now you can follow the steps in the guide but skip the steps that have to do with sec5. The Token that the software gave you is the same code that you need to enter in the *#9434# every time you want to change region so you do not need to use the software ever again.
UPDATE: Currently, it doesn't seem to work anymore for some people. Try installing Loopback network driver ( How to install Loopback) and uninstalling or disabling all other network drivers. If you are afraid of doing this with your own device you can use a Virtual Machine, too. I tried it this way.. Rest of the process is the same, just change the network address in Device Manager the same way as before.
Now that you are on the Pakistan Version, you can also run the device in dual sim mode, which was disabled in EU Mode. Some users have ordered Dual-Sim-trays on AliExpress and are now able to use it in this way. Also this might open up the path to unlock the bootloader, since that is limited to chinese devices only. I have not tried this out yet, though.
In theory, changing your region like this should work on any OPPO device running at least Android Pie (9). It may even work on earlier versions.
NOTE: This will not work for Chinese variants. These codes are filtered and will only work for international variants.
this guide no longer works with the new updates for both x2 pro and neo so let's avoid posting things that are not valid there is already a tutorial
*#3954391# and *#391#not working in color os 11 solution plz
Good news for anyone having the Wing fall Back to 3G when making a call. You can activate VoLTE using a mix of the two following guides:
Guide:-How To Activate VoLTE,ViLTE,VoWIFI&ViWIFI LG Devices-LG Velvet 5G
Hi Guys Am Baljeet From India There Is A Path To Force Enable VoLTE On The"LG Velvet 5G LM-G900" Specifically Your Version Which Is The "LM-G900". By Default This Feature Is Disabled On This Model. Follow These Steps Given Below: A). Go To The...
forum.xda-developers.com
and
Lg g8x,g8,v60 Volte enable for all carriers, unlisted countries also
I will try to keep this post as small as possible. This will enable Volte for Phone ranging from Lg g8x, g8 and V60 without root or modifying the system files. Many have posted ways to get it, Iam only trying to help out the small bits missing...
forum.xda-developers.com
To make it as short as possible:
1) Create an empty directory named "enable_ue" in the root of the phone's main storage, using you prefered file explorer (like for exemple Cx Explorer or ).
2) From the LG Phone dialpad and with your SIM card inserted, type #*462633*#100# (for european LG Wing - LM-F100EMW) to get into the Hidden Menu. From there enter Field Test, then Universal Enabler -> Create New Config. Click on the four last check boxes VoLTE, ViLTE, VoWIFI and ViWIFI to enable these options. You won't be able to enter this setting if you haven't created the empty directory under point 1).
Go back to Field Test and enter Modem Setting to enable 5G if you haven't already -> RAT Selection -> SIM 1 Mode - > select GSM/WCDMA/LTE/5G or whatever you need + 5G. Go back and do the same with SIM 2 after, if you use it. Network mode in the network settings will then not show "5G prefered", but a number, like "26" in my case.
3) Go back to Field Test menu and enter IMS Stting. If you have Slot - 0 : OPEN / EU and Slot - 1 : OPEN / EU (or something else on each side of the / ), then you did everything right to this point. Exit the Hidden Menu and get your SIM out of the phone.
4) Enter th Hidden Menu again without the SIM inserted. Go back to IMS Setting and click on Slot - 0.
Under Subscriber enable IMS,ISIM & USIM.
Under Xcap\Ut. -> General, enable UT & USSD Over IMS
Under ETC, enable Check IMS Registration, Use rule-ID from responsem& Query on bootup
Under GPRI VoLTE/VoWIFi, enable VoLTE, ViLTE, VoWIFI & VIWIFI
Under Test, Preference Operator can be set as OPEN (what I did), or your carrier short name, or your County. Apparently does not make difference for some operator but some do require it to same name as theirs.
Preference Country this is important as this decides if VoLTE gets enabled, Find your country short code example USA is US , India is IN. Europe is EU. Find and try different short codes, I put EU.
Enable Support Volte AT command, VoNR, UAC Enabled & VoLTE Setting Enabled
You can now exit the Hidden Menu & insert your SIM back in. If everything went well, you should see the VoLTE icon showing up on the left of the network in the task bar, on the (my) Wing it's a small lifted phone headset with wave coming out of it. If you don't have it, check under the phone network settings - Mobile networks, if you got the VoLTE option and if it's activated. You might have to repeat some of the steps above with the SIM card inserted (as I had to) to make it work. Don't forget to check the settings for both SIMs if you use two. Not sure if all setting are kept if you reboot or reset the phone. You might have to repeat the preocess or part of it on each reboot, as for enabeling the 5G option.
Was tested on Android 12, as my phone didn't get Android 13 yet. But it's also working on my Velvet 5G that is on A13.
Many thanks to Baljeet Khairwal and johndaniel for their guides + all other persons who helped in the two threads.