yashsingh1/xdaforums huggingface dataset:
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] navasfj:
I can not install the rom, it gives me this fault in the recovery. Could you tell me the steps to follow? Thank you.

[IMG="Recovery error"]http://i63.tinypic.com/xdyw0h.jpg[/IMG]
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sssyraj:
Your twrp is not compatible. Try the twrp in the first post and try installing. Thanks
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
After few reboots ask for sim card and fast charge not fast as before, max 1500 mA....
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Great work. First off the Google search headband has been removed. Some members were asking for it to be removed in other threads.

A small, though insignificant and doesn't affect usage in anyway, eyesore: NW icons are swapped. My data SIM is in slot 1.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sinha02:
There is a echo sound during call, and echo is high during roaming call.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Moved back to AOSP Extended 9 to extract some data after backing up Nitrogen. Backup consists of System, cache, boot, recovery and vendor image.

Restored back all backed up partitions of Nitrogen after clearing all cache, data and system. Now it shows NW icons correctly!! No idea how. If anything at all why it didn't show up correctly first time puzzles me.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] aleksjug:
Weird question....Does Pokemon GO work on this ROM? Tried on couple of oreos but doesn't work...
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Radzią:
a new version has appeared.

Nitrogen-OS-P-x2-20181023.zip

542.3 MB any changelog?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
Dirty flash from 1610 ver. dont work.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] man2106:
add messaging app remove spectrum profile that what i notice

---------- Post added at 08:33 AM ---------- Previous post was at 08:33 AM ----------

no issue for me
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
TWRP version ? Are You wipe anything ?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] man2106:
never wipe dirty flash twrp the one given on 1st post try redownload the rom again
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
The changelog contains estemated 40 items.

Among other kernel, framework base, selinux permissive now, TelephonyExUtils, B atteryMeterViewer fix PowerSave percents and use same method for charging.

I'm not shure if I mentioned less important items and omitted the more importand ones.

It seems that the battery-consumption seems significantly improved (not messured), the Rom runs fast and smooth.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
Dont work, i try several versions of TWRP but dont work.

1610 works just fine.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sugnuf:
Could You check if this rom support Signature Spoofing?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
I find a solution :) just install last 3.2.3.1 TWRP and go.

ONLY works with that New recovery.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
Sorry, I don't know.

Nothing in the changelog and nothing in the settings.

New version from today 24102018 is out.

I fiund no further information at the moment.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
I have a strange problem - using power button to get the phone to sleep and as soon as the screen goes off press power button again. When screen is back alive no response to touch from the bottom - like swipe up, recents, etc but the top half will work but the navigation lights will come up on bottom touch. I have only 5 icons on the desktop, single screen. Many a times when I double press any desktop icon thinking my touch was less than a femtosecond for the phone to recognize and respond, though button lights come up, an app at the bottom of the drawer will open!? Like for example my 5th and rightmost icon is browser and double tapping it will open YouTube which is my last rightmost app in drawer - 35th icon in app drawer. When it freezes like that then only way to get out is to double tap on status bar to get the phone to sleep and then use power button to wake up. Then all back to normal.

I do not use lock and I have tried disabling "Lockscreen" option under settings - gestures but still the same.

Now the phone HW is good. I have noticed this issue randomly on other Pie ROMs but here it is persistent. I am able to simulate it at the time of posting this too. Anyone else?

Correction: I swipe up - nothing happens - no app drawer. Second touch opens the corresponding last row app even if the swipe up duration is not long enough to get the seventh row visible. I have a 5 column layout as specified. Forgot to mention Calculator and E-Mail apps are disabled. Using a different Calculator app.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
I tried as you described: Screen off, screen on. No unusual behavier, I could unlock the screen and so on.

Perhaps other users can reproduce your bug.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] xnd_bogdan:
Worked for me.

I dirty flashed from arrow os, and then each new build of this rom until 23.

No issues.

I will also dirty flash to 24.10 build.

Note: I am dirty flashing with the lastest official twrp for this device.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Are you using a lock screen? I don't. I tried on AOSP Pie but the issue is less random compared to Nitrogen. Perhaps UI wakeup issue?

You may notice a delay in buttons light going off the first time you press power button compared to the screen. Press power again before the button lights go off. You may be able to simulate what I described.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
Thanks but try to read few posts earlyer :)
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
I'm using a lock screen.

With the Rom from yesterday the screen is off faster than ever, same to screen on. It is working without any delay, no chance to press any button before it is off.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
I'll try again with clean flash. Earlier I did a dirty flash.

Edit: yes, you are right. Did a clean install and checked. Thank you.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
New Build is out: 25-10-2018
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
I love brand new edition :)
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
i tried this too clean install but ,

there still the problem with sound in phone call with hands free from speaker and earphone , the sound quality it's orrible and full of noise from the other side , the interlocutor do not ear clear and do not undestand what you say, you have to use directly the phone close to the ears ,..this i not good .no one is worring about this problem.. this problem is on all the rom oreo and pie. nothing to compare with eui call sound...
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gbrezak1:
Kodi 17.6 don't works.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] man2106:
kodi 18 works fine for me
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
1) Don't use CDLA earphone for phone calls

2) Use CDLA adaptor (LeEco original is the best) with 3.5mm earphone. If the problem don't solve, try to reconnect CDLA adaptor in the other side (in the CDLA port on your X2). Run 100% no noise

3) Enjoy this Top ROM

---------- Post added at 08:13 PM ---------- Previous post was at 08:04 PM ----------

---------- Post added at 08:14 PM ---------- Previous post was at 08:13 PM ----------

I do not understand why this ROM is still classified as "beta". I use it from the date of issue, and I have not yet found any instability. it is my opinion that you can pass it on "stable".
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
i already tried with same problem but i want give it another try right now with your suggestion i will let you know thanks for the info.

quote : i'm trying right now a phone call with earphone with adaptor and work good. not perfect but works..
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Almog6k:
Hi,

Thank you for this rom (latest one 10.25). I have a problem with the camera focus. I was looking for the leeco extra menu to enable the camera focus, but couldn't find it. Where can I find this option in the setting? If there isn't, is there a patch I can download?

EDIT!

Found it.

Personalization- Device features

Thank you!
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] gamzekal:
+1..
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sinha02:
I am also facing the same problem

---------- Post added at 06:42 AM ---------- Previous post was at 06:23 AM ----------

In 25/10 build, the volte is not working, internet get disconnected, just after few seconds, again works for few seconds only after restart
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sinha02:
After shifted back to 24/10 build, volte works
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
there is new up date

http://dl.nixadm.ru/nitrogen-9-x2/
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
For those who have installed it already: Beginning, as I see, with the build 25-10-2018 OTA is possible and works.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Liu155:
How long can the screen be bright?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sinha02:
Till battery last........hahaha,

It has a good battery backup, up to 4 hrs
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
OTA works perfect though I'm not sure about saved data integrity. I had re-login on my mails barring one upon auto install!
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] marshharsha:
where can i buy original 3.5mm adapter which supports call and good audio quality suggest me
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
FIRST of all i suggest to use omnirom has best audio in all oreo and pie rom good audio quality in phone call ,second orginal i do not think so but you can try one of this

:good::good:
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] xen2001:
Original LeTV CDLA headphones on flash sale here: https://tinyurl.com/yb8uzl6t is it worth $12? I dunno.

---------- Post added at 06:03 PM ---------- Previous post was at 05:52 PM ----------

With the exception of the first release, all other/consecutive versions charge the battery with 17W @ 9V at USB input and the rate nearly 1 C going to battery. :(

It's a pity and annoying. Same goes for the Omni. Would be nice to turn the "volume" down to 12W. ;)
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
I certainly would love that but somewhere something is not right - See attached image. I charged about 6.5 hours prior to this and that too only up to 82% - needed to go out at that time and completed full charge later after a gap of 45 minutes.

Edit: I have reset the stats now to get a clearer picture.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] RISS23:
No offense to anyone, but to me these statistics seem like mockery. I tried dozens of Rom and I never got to three hours of screen after twenty hours from charging. On average, with any rom I have just over two hours after twenty hours from recharging
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Battery even on a new gadget, not just phone alone, is more like a lottery. You are right in saying that the battery lasts less than 3 hours given that X2 battery is more than two years old barring those units where the batteries got replaced.

When I saw over 6 hours as the screen on time I realised that the stats were not reset by the system properly.

The power spend is calculated by the system based on the usage including that of any app that runs in the background.

It is only an approximate indication with regard to battery life and any app(s) is a causative factor for abnormal drain but I'm not sure if the system is capable of including drain due to network hunting in poor reception areas.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] xen2001:
The usual suspects: USB cable and charging adapter - replace both.

Also you might get APK AccuBattery and some USB meter, similar to this: https://www.banggood.com/QC2_0QC3_0...-p-1194873.html?rmmds=search&cur_warehouse=CN, but do not go below $6 ;)
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Thank you. I do not have any hardware issue including the cable. I was referring to what I saw as battery status reported by the system.

The system said I charged about 20 hours ago but I charged only 6.5 hours before seeing the stats screen. That's all.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ernestorw:
New build is out: 28-10-2018.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] sinha02:
Download link for 28/10 is not working
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
http://dl.nixadm.ru/nitrogen-9-x2/Nitrogen-OS-P-x2-20181028-1123.zip
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
Can someone explain significant differences between Nitrogen and Omni, in few sentences ? Also, eventually proposes for both of them... Thanks in advance !
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
Rom stable and fast. I miss the screen lock option by double clicking on the screen anywhere. And I would like to add options to remove the search engine from the desktop.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] man2106:
omni is more basic like lineage nitrogen is like rr more feature simple as that but i am on nitrogen cos it is more battery friendly with ota update
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
Could You get 4h of SoT on Nitrogen in average ?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
During a phone conversation the loudspeaker makes a strange sound, there are crackles.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Desaro:
Mobile data issue

Hello ,

Problem with starting the mobile data after the wireless connection is lost.

I believe that the same bug happened on AospExtended rom and also permanently fix.

Data connectivity is restored only after restart of the phone.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Milanche78:
Have you tried plane mode on/off?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] man2106:
about there 3.5hours onward
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Desaro:
Tried it. Issue persists
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
Nitrogen-OS-P-x2-20181030-1256.zip is on OTA

Enjoy
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
Maybe this issue is fixed on new ota build ?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
Yeah is fixed, for me works 100% and fastest.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
Just as a propose, maybe to be made some battery life improvements :good:
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Milanche78:
To be honest, i did not use phone as much, but never had baterry this good.

Question what is this OPEN DELTA and can it be disaebled?

Послато са LEX820 уз помоћ Тапатока
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
After selecting the selected update, there is still version 1203.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
And it says "Flash" not "Download" meaning that it has been downloaded and is ready to flash.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Milanche78:
+1

послато са lex820 уз помоћ тапатока
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
Yes, I understand. I make a flash and an update still occurs.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
1203 is the time and not the version. After update you will only see "Last Checked" at date/time and nothing under "update version" if your current version is same as installed version. The attached image is not getting uploaded properly.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
Which does not change the fact that there is a newer version that can not be installed.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
What happens when you touch "Flash" on the update screen? Does it reboot to TWRP recovery or not? If not that is really strange as I updated today without any issue except that my desktop got changed as per the uploaded version and some cosmetic changes like VoLTE icon on status bar plus some in settings.

Edit: Forgot to mention that I dirty flashed over 10/28 build.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Hormon-PL:
Goes to TWRP, makes a flash, launches the system and continues to search for this update.

Wysłane z mojego LEX820 przy użyciu Tapatalka
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
Wow! Sorry that loops. On the update screen you may try to clean update files via 3 vertical dots - settings and try. And no custom version info is available under about phone too on most of the custom P to know if the newer version is flashed or not. The "Clean Update Files" is way below in the settings page.

However change log lists 10/30 under about phone.

Edit: Now I saw the screenshot you've posted earlier properly. Dumb me did not notice both ver are same:D.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Leonpasovary:
Wifi Diplay dont work :(
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] brunojborges:
i wonder why data connectivity is lost in use. For example, im playing pubg, and in middle of the match the wifi drops, so i must wait more or less 1 min to wifi go back and continue playing. Sometimes the conection with server is absolutely lost so i must relog to continue playing. Only aeox and eui i dont see this buggs, all the others pie roms is the same :(
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] AhmadSant:
yes I have wifi or data disconnect while using Viber or Whatsapp and get msg like connection error", then I have to close them and open again to get them work
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
New release is here http://dl.nixadm.ru/nitrogen-9-x2/ (in OTA too!!!)

Main bug in last release : connection via USB-C is impossible ad instable (ok only via TWRP) - I'm back to Nitrogen-OS-P-x2-20181030. Please fix if is possible.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Milanche78:
Confirmed, USB connection does not work

Послато са LEX820 уз помоћ Тапатока
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] BlueSense:
What do you mean?

For me File transfer , Fast Charge & USB tether is working.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kanagawaben:
+1

I tried OTG, charging and file transfer from PC. All fine.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Milanche78:
Yes it's working, I probably didn't put USB flash in other dongle correctly.

Послато са LEX820 уз помоћ Тапатока
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
+1

Here (Windows 10) works only via USB 3.0 (USB 3.0 cable). Not works in other ports USB and without USB 3.0 cable. Last version (since first release) works fine in all USB ports and conditions. In my opinion, this "problem" should be fix in future.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
[MENTION=7884203]andr68rus[/MENTION] no update yet for omniRom???
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] aleksjug:
Wrong thread...
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] antony82:
i know but [MENTION=7884203]andr68rus[/MENTION] is dev for both rom so i don't see the problem,....
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kanagawaben:
New update today, just a small delta rather than full ROM.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] BlueSense:
Dear andr68rus,

The in call vibration function stops working after the screen is closed and went into sleep, I have to disable and re enable it to make it working again temporally

Greetings
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] mjoach:
Not seeing Spectrum profiles in the most recent build, have they been removed?
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] evgenyzdor:
Hello, you can add in the settings the brightness of the touch buttons, thank you. There was an item in the sound settings "link ring and notification volume" - what is it?. I really liked the firmware that 100% is translated into russian, but "link ring and notification volume" is no longer translated, thank you.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cruizgaray:
I've dirty installed today's version. It hangs immediately after booting so I returned to the previous version...

Just reporting, I keep it as my daily driver.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
If that option is enabled volume level for ring and notification is united. When You disable that option, ring and notification volume levels are separated.

---------- Post added at 05:25 PM ---------- Previous post was at 05:21 PM ----------

I made update installation via OTA, before few minutes, all pass OK.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] cegevara:
Dear [MENTION=7884203]andr68rus[/MENTION]

I am using Nitrogen OS in last few builds...ROM is very good !

I want to report You few problems which I discovered:

- After every reboots sim card which was setted for DATA (SIM2) is not saved anymore, need to be setted again, after every reboot

- System theme can not be changed (we have automatic by wallpaper, light and dark) Just work light theme

- In personalization not work "vibrate when connect" and 2 other option for calls

- SMS app have not in it's settings option to disable physical emotion button, same SMS app but different version have this option, I think just need to change version

- Few times "files app" had a force closing after delete few files in same time and try to scroll down/up (tested on few rom installations)

- I know that wifi display not work in all pie custom roms, but maybe I have useful information for You, namely, I went to my friend and just try to connect on his SONY android smart TV and wooow, wifi display WORK excellent !!! On my SONY smart tv (not android) not work, I tried on LG, same...

- Battery life is something worse in last build compared with 2 build before, just to report You, maybe You did not touch anything with battery but maybe some other changes make a reflection on battery life...my SoT was about 4h, now about 3-3:15h.

All the best and I am very appriciated for Your work, big thanks !
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] Ben Obi Wan Kenobi:
+1
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] bilausdaniel:
Great work man.often updates on this rom.good sot and stability.thanks for your hard work.
[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] kayyappan:
[MENTION=7884203]andr68rus[/MENTION]

From 10/11 build HD or VoLTE icon does not exist. While it does not matter, VoLTE works on Slot 2 too though the non-VoLTE SIM in slot 1 is shown as UNKNOWN under Settings - Mobile Network. I had to deactivate and reactivate for calls from Slot1 but it still shows as unknown.

First time when I swapped the SIMs the phone went in to a boot loop - "Phone is starting" to black screen then back with status bar time/battery and "Phone is starting". Had to reboot to recovery wipe cache/data to get it back on.

GApps micro at the time of checking for VoLTE on SIM slot 2 but none of my apps installed. I have earlier noticed same "unknown" in SIM swapped status VoLTE never worked from slot 2 and now it does. Re-swapped VoLTE SIM back to slot 1 no issues at all.

Thanks for an excellent Pie.