Volte support Lg v20 h990ds

[Quetsch]

VolTE and Wifi Calling Provider settings

Hi!

I just got a H990ds and OTA updated it's software to Patch level 1st May 2017 (V10e-TWN-XX). It claims to add VoLTE support. I can confirm, functionality exists in ROM and I also activated the Wi-FI Calling options in service menu (*#546368#*990#). However neither VoLTE, nor Wi-Fi Calling does work, VoLTE symbol can't be activated, Wi-Fi calling enabled and forced doesn't change a thing.
As far as I know, your network provider needs to support and enable these services on your SIM card. And only phones with the right provider configuration (CSC files in Samsung phones) are allowed and able to use these services.

Now to me. I'm using the german O2 network, O2 claims to have VoLTE working with LG G6 (ROM without Branding) and LG G4 (with provider Branding):
(https://hilfe.o2online.de/docs/DOC-...niere-ich-im-lte-netz#jive_content_id_Samsung).

Wouldn't it be possible to somehow extract the necessary configurations for VoLTE from a recent LG G6 ROM which should be quite similar to V20 ROMS (both on Android 7.0) and add theses settings to the V20?
Unfortunately I don't have any clue where these settings are stored.
Does anyone have a better understanding of that matter and maybe already working on a solution?

After some searching, I found this interesting thread. Maybe gonna try it out, after rooting H990ds gets a bit less risky.
https://forum.xda-developers.com/lg-g5/how-to/rooted-stock-based-rom-volte-fix-t3564924
https://forum.xda-developers.com/lg-g6/help/south-korea-t3570972/page2

Ok, rooting requires flashing an old firmware which has no VoLTE support included. So, this is kinda pointless atm. What a pity.

 

[NK07]

any solution

The biggest problem is how lg has implemented volte at least on the dual SIM model of the Indian version. If u place sim1 which has volte and sim2 has 3g then change data to sim2 it will not only disable LTE data of sim1 but also knock off volte making sim1 completely unusable. Can any of you try this and confirm? I had a s7 before and it would let volte be active and only disable LTE data of sim1.

Sent from my LG-H990 using Tapatalk

same here,did you able to crack it please let me know if yes

 

[mehtamitul]

No thats the way chipset of all phones function.

Sent from my LG-H990 using Tapatalk

 

[emdroidle]

I just got a H990ds and OTA updated it's software to Patch level 1st May 2017 (V10e-TWN-XX). It claims to add VoLTE support. I can confirm, functionality exists in ROM and I also activated the Wi-FI Calling options in service menu (*#546368#*990#). However neither VoLTE, nor Wi-Fi Calling does work, VoLTE symbol can't be activated, Wi-Fi calling enabled and forced doesn't change a thing.

Yeah the number of changeable things in the service menu is kind of surprising.

Ok, rooting requires flashing an old firmware which has no VoLTE support included. So, this is kinda pointless atm. What a pity.

The root process requires an older firmware. Keeping root though doesn't require an old firmware. Once rooted KDZ Writer can update to any version for which a KDZ file is available.

 

[emdroidle]

This thread seems really dead now for some reaason.
Well here goes, have LGup installed and am downloading singapore firmware H990ds10e_00_OPEN_SG_DS_OP_0314.kdz. Will let you know what happens.

"Holy bloatware Batman!" Oy vey does the Singapore image have a lot of bloat. The Australian appears to have less. The bloat of Singapore was so bad I pulled it almost instantly.

I just got a H990ds and OTA updated it's software to Patch level 1st May 2017 (V10e-TWN-XX). It claims to add VoLTE support. I can confirm, functionality exists in ROM and I also activated the Wi-FI Calling options in service menu (*#546368#*990#). However neither VoLTE, nor Wi-Fi Calling does work, VoLTE symbol can't be activated, Wi-Fi calling enabled and forced doesn't change a thing.
As far as I know, your network provider needs to support and enable these services on your SIM card. And only phones with the right provider configuration (CSC files in Samsung phones) are allowed and able to use these services.

Now to me. I'm using the german O2 network, O2 claims to have VoLTE working with LG G6 (ROM without Branding) and LG G4 (with provider Branding):
(https://hilfe.o2online.de/docs/DOC-...niere-ich-im-lte-netz#jive_content_id_Samsung).

Wouldn't it be possible to somehow extract the necessary configurations for VoLTE from a recent LG G6 ROM which should be quite similar to V20 ROMS (both on Android 7.0) and add theses settings to the V20?
Unfortunately I don't have any clue where these settings are stored.
Does anyone have a better understanding of that matter and maybe already working on a solution?

After some searching, I found this interesting thread. Maybe gonna try it out, after rooting H990ds gets a bit less risky.
https://forum.xda-developers.com/lg-g5/how-to/rooted-stock-based-rom-volte-fix-t3564924
https://forum.xda-developers.com/lg-g6/help/south-korea-t3570972/page2

Ok, rooting requires flashing an old firmware which has no VoLTE support included. So, this is kinda pointless atm. What a pity.

I think most/all of this is controlled by 3 areas: /system, /firmware, and /cust

/system is obviously the system area. If things are missing there VoLTE/VoWifi won't work. /firmware is the modem firmware, without the modem/phone portion won't work at all.
/cust appears rather more interesting. There seems to be rather a lot of files in there related to VoLTE. I'm left wondering if those can be adapted to get VoLTE functioning in areas not supported by H990DS images...

The other question is which areas to pull from which KDZ? Does VoLTE not work on Taiwan KDZ simply because the appropriate information is missing from /cust? Does it need alternative modem firmware?

The released `kdzwriter` lacks support for replacing /cust from a KDZ file, but the code has been implemented.

 

[tickertapes]

Error Message after flashing different regional rom

I've tried migrating from TWN to SEA and AUS and get this error message after booting the device, any ideas?
This is easily dismissed and phone works but I have no VoLTE which is what i want.

"Holy bloatware Batman!" Oy vey does the Singapore image have a lot of bloat. The Australian appears to have less. The bloat of Singapore was so bad I pulled it almost instantly.


I think most/all of this is controlled by 3 areas: /system, /firmware, and /cust

/system is obviously the system area. If things are missing there VoLTE/VoWifi won't work. /firmware is the modem firmware, without the modem/phone portion won't work at all.
/cust appears rather more interesting. There seems to be rather a lot of files in there related to VoLTE. I'm left wondering if those can be adapted to get VoLTE functioning in areas not supported by H990DS images...

The other question is which areas to pull from which KDZ? Does VoLTE not work on Taiwan KDZ simply because the appropriate information is missing from /cust? Does it need alternative modem firmware?

The released `kdzwriter` lacks support for replacing /cust from a KDZ file, but the code has been implemented.

 

[tickertapes]

Error Message after flashing different regional rom

You're so right about the bloatware with the SEA rom, it just kept on coming and coming.
Another strange thing in addition to the error message in my previous post, when I looked at the SW info it said that I had a Global version of the rom. I was expecting to see SEA Singapore there.


Any ideas?

I'm seriously thinking about dumping LG and never to return. I have no signal where I am because the only signal available is 800Mhz LTE and my provider (Three) will not let me on unless my device supports VoLTE.

I've been sticking with LG because I do like features like the removable battery, the FM radio and the IR blaster but not being able to make calls where I am is a killer.

"Holy bloatware Batman!" Oy vey does the Singapore image have a lot of bloat. The Australian appears to have less. The bloat of Singapore was so bad I pulled it almost instantly.




I think most/all of this is controlled by 3 areas: /system, /firmware, and /cust

/system is obviously the system area. If things are missing there VoLTE/VoWifi won't work. /firmware is the modem firmware, without the modem/phone portion won't work at all.
/cust appears rather more interesting. There seems to be rather a lot of files in there related to VoLTE. I'm left wondering if those can be adapted to get VoLTE functioning in areas not supported by H990DS images...

The other question is which areas to pull from which KDZ? Does VoLTE not work on Taiwan KDZ simply because the appropriate information is missing from /cust? Does it need alternative modem firmware?

The released `kdzwriter` lacks support for replacing /cust from a KDZ file, but the code has been implemented.

 

[tickertapes]

Found a thread here where someone has managed to flash a HongKong rom onto a TWN H990DS with similar results to me but no mention of my error message?
https://translate.google.co.uk/tran...et/service/board/lecture/10195605&prev=search

"Holy bloatware Batman!" Oy vey does the Singapore image have a lot of bloat. The Australian appears to have less. The bloat of Singapore was so bad I pulled it almost instantly.




I think most/all of this is controlled by 3 areas: /system, /firmware, and /cust

/system is obviously the system area. If things are missing there VoLTE/VoWifi won't work. /firmware is the modem firmware, without the modem/phone portion won't work at all.
/cust appears rather more interesting. There seems to be rather a lot of files in there related to VoLTE. I'm left wondering if those can be adapted to get VoLTE functioning in areas not supported by H990DS images...

The other question is which areas to pull from which KDZ? Does VoLTE not work on Taiwan KDZ simply because the appropriate information is missing from /cust? Does it need alternative modem firmware?

The released `kdzwriter` lacks support for replacing /cust from a KDZ file, but the code has been implemented.

 

[emdroidle]

I've tried migrating from TWN to SEA and AUS and get this error message after booting the device, any ideas?
This is easily dismissed and phone works but I have no VoLTE which is what i want.

Found a thread here where someone has managed to flash a HongKong rom onto a TWN H990DS with similar results to me but no mention of my error message?
https://translate.google.co.uk/tran...et/service/board/lecture/10195605&prev=search

Yeah, something is definitely going on there. I'm pretty sure there is some extra step which is done by LGUP during upgrade/refurbish via KDZ. The net result is `kdzwriter` works for upgrades of the same KDZ region, but has issues when upgrading to another region's KDZ file.

Sorry to say it, but what will work is to

1. Fully backup
2. Full unroot (`dd if=/dev/block/bootdevice/by-name/abootbak of=/dev/block/bootdevice/by-name/aboot`)
3. LGUP to Singapore or Australia KDZ
4. Re-root via DirtySanta

I would like to make `kdzwriter` fully able to change regions, but right now I've got no idea what is needed for this. I think this involves writing a magic value into flash somewhere, but I've got no idea where right now. Given your urgent level of need, you may need to resort to the above.

Does anyone know the level of VoLTE/VoWiFi functionality of various regions? TW/Taiwan it is almost completely absent; SG/Singapore sounds likely to have it; HK/Hong Kong also seems likely to have it. What about Australia? Australia seems potentially like a good choice if the support is there (pretty sure the H990DS in Australia isn't carrier tied and therefore free of bloatware).

 

[Zenroid]

H990N which has been selling in Hong Kong for a long time has VoLTE since day 1 but we are still stuck at Feb 2017 security patch level, and I don't think we have VoWiFi from any carrier yet

 

[tickertapes]

Okay, so what would happen if I flashed H990N firmware into a H990DS? Would I end up with a brick?

H990N which has been selling in Hong Kong for a long time has VoLTE since day 1 but we are still stuck at Feb 2017 security patch level, and I don't think we have VoWiFi from any carrier yet

 

[Zenroid]

Never try that on v20 though I did flash sea firmware to HKG one for G3 before but it was quite a long time

 

[Moon75]

I got H990ds Taiwan version:
- New phone H990ds it will come with the firmware 10b I think, 2 OTAs updates will update it to firmware 10f (Taiwan)
- For Volte it got icon at the top quick setting area but not able to enable it
- I been flashing (use LGUP) firmware SEA (Singapore) on top of my Taiwan firmware 10f, you can flash SEA (Singapore) 10e or 10f firmware with the upgrade option in LGUP it works but you will get some SG bloatwares.
- Latest SEA (Singapore) 10G is flashable too but not ok it will work normal but show two errors everytime the phone start up.
- Note flash firmware you won't lose data or apps everything stay the same as before you flash it.

I haven't try other firmware, HK maybe next but they pretty much the same like Taiwan and SG firmware.

 

[emdroidle]

H990N which has been selling in Hong Kong for a long time has VoLTE since day 1 but we are still stuck at Feb 2017 security patch level, and I don't think we have VoWiFi from any carrier yet

How much bloatware is there on the H990N?

Okay, so what would happen if I flashed H990N firmware into a H990DS? Would I end up with a brick?

If using the unmodified LGUP which does all the checks, very unlikely. All the H990* devices can share the same kernel so userspace cannot be very different.
If using kdzwriter you would be able to revert simply by booting back to TWRP and writing a different KDZ.

During the process of modifying DirtySanta for the H990DS, at one point I booted a kernel which lacked "lge.sim_num=2". In this setup all the dual-SIM functionality disappeared from the menus, but otherwise the system worked (also had a broken modem so I've got no idea whether a dual-SIM device will function with the second SIM completely disabled). Even though some software bits can damage hardware by doing the wrong thing, most OS software is pretty darn resilient.

 

[Zenroid]

There is no bloatware in H990N and it is a dual SIM version for HK and China, no idea what will happen for flashing it to a h990ds, if that works I may want to try flashing h990ds firmware for much newer security patch

 

[emdroidle]

There is no bloatware in H990N and it is a dual SIM version for HK and China, no idea what will happen for flashing it to a h990ds, if that works I may want to try flashing h990ds firmware for much newer security patch

In truth I haven't checked that closely. Kernels built for a H990DS work fine on a H990N (even when the kernel is telling userspace the device is a H990DS!). Most LG devices are pretty compatible so a H990DS KDZ is very likely to work on a H990N. If normal LGUP without hacks to enable extra features is willing to install a H990DS KDZ onto a H990N, then that is a pretty good indicator it will work (LGUP should prevent you installing an incompatible KDZ).

I don't know about other H990* KDZ files on H990DS/H990N. Ones for a single-SIM device may lack support for dual-SIM functionality, but there is a pretty good chance the functionality is present just inactive...

I'd like to see an updated Australian KDZ.

 

[oleg77]

Hi. I bought recently a H990DS still on its v10c-TWN stock rom. I have an ota notification for v10e-TWN-may-17 that mentions voLTE capacity. Not upgraded as I follow your progress with dirty santa and camera and fast charging issues...
Clean stock ROM by the way, almost no bloatware.

 

[Zenroid]

Just would like to report back H990N just released a firmware with support for VoWiFi with SEP security patch

 

[p7810456]

I think I found something of interest for those who may be willing to look into it for those of us who do not want to flash. In the *#546368#*990(or other model #)# menu, there is an option under Field Test -> UX for GPRI VoLTE/VoWiFi. Inside this there are a bunch of checkboxes that don't seem to do anything. I have the V10f-AME-XX software version. I don't know what these do but I'm sure someone would know or could look into this. The pic is the attachment since I'm on mobile and can't host pictures on Imgur.

 

[Nolia]

I think I found something of interest for those who may be willing to look into it for those of us who do not want to flash. In the *#546368#*990(or other model #)# menu, there is an option under Field Test -> UX for GPRI VoLTE/VoWiFi. Inside this there are a bunch of checkboxes that don't seem to do anything. I have the V10f-AME-XX software version. I don't know what these do but I'm sure someone would know or could look into this. The pic is the attachment since I'm on mobile and can't host pictures on Imgur.

I have checked and nothing happens. I am using an EE sim in slot 1 and iD Mobile (3 network MVNO) in the other, can't enable the VoLTE on the phone. Also EE do mention that Wi-Fi calling works on phones bought directly from them. I know these services are different lol