yashsingh1/xdaforums huggingface dataset:
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] lolo9393:
Persist.img is in a different partition block.

Get the file from a fastboot rom and install it as image via twrp by selecting persist position.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Finally a good beta for Q! Even PIP for YouTube that hasn't working properly for miui is finally working and hdr content are as it should be!

Best uptate
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Benfatica:
Do you just format data and flash the ROM or you have to wipe other stuff, because I can't get always on display to work on the latest build
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Ardysan:
Can you guys please post some of your battery life and SoT (screen on time) screenshots?

Hearing battery life is "good" or "bad" but wondering what it actually is for people (actual hours).

Someone posted 6 hour SoT in neighboring thread and I am afraid to leave my 11 hour SoT MIUI 10 ... Anyone?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
I am still on miui 10 xiaomi.eu 10.3.15.

Now i want to install miui 11 dev version android q (11.28)

How im supposed to install? All wipes and then flashing the rom or just format data and that s it?

---------- Post added at 08:50 PM ---------- Previous post was at 08:48 PM ----------

Im on miui 10. What are the flashing procedures?

Flashing data is enough or need all wipes? Do you know?

Thank you in advance
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] razielmcr:
Format data and wipe everything
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ruwansweb:
Updated to the latest 11.28 . need some advice for app lock screen. In previous builds , the app lock screen was all black , in this 11.28 build it shows a blured down ,colir reduced lockscreen wallpaper . is there any settings to change the applock screen .
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Using lkt module I sense that I have a mutch better battery life with Android Q with no downside. Although, without any customization, I believe I was getting 8hs SOT (it's a guess because I didn't really measure it). Now I'm getting around 10 hours SOT.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sergiola123:
When the screen locks just before it turns off the brightness rises considerably
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Ardysan:
So what is the best TWRP version to use and the sequence of steps, if coming from MIUI 10 (xiaomi.eu stable) to flash 11.28?

This still the best version/steps order?:

- flash LRteam 3.3.1-1109 TWRP

- boot TWRP

- flash latest weekly .EU ROM

- wipe > format data > type yes

- wipe cache and dalvik
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ajithscorpio:
which profile are you on?

Balanced or Battery?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Ardysan:
The reason I am asking, as I read somewhere that you can't flash latest dev xiaomi.eu from xiaomi.eu miui10 stable... Need to flash something else in between. Or is that old info?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Balanced. Never tryed battery, to tell you the truth.

---------- Post added at 12:40 PM ---------- Previous post was at 12:37 PM ----------

Old info. Just flash the newest and after that format data! I said, format and not wipe. Lots o people just wipe. Don't make the same mistake ;)

After that, boot.

I like to flash magisk just after the first boot. Don't know if you can flash before, but is the way I do :cowboy:
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Ardysan:
Right, so that TWRP version is good? Format and not wipe data, roger that.

What version of Magisk do u use with 11.28 xiaomi.eu?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
So you should format data AFTER flashing the ROM? I'm on the latest Global Stable MIUI 11.0.1

I thought it was necessary to first format data and then flash the ROM.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
9.12.5 added in OP: https://xiaomi.eu/community/index.php?posts/518708
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
After. But won't harm to do it before too. But after is a must
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Done! A rounded 1000 thanks:cool:
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Immortal68:
Anyone else experiencing camera crashes when you turn motion on?

MI camera worked for me perfectly before, but in 9.11.28 and 9.12.5 whenever I try to turn motion photo on the app crashes.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] giodeluigi:
[ Mi 9T ] unable to post videos longer than 15 sec. on Instagram stories.

It's impossible to upload videos longer than 15 seconds on Instagram stories.

Only first part of the video is published.

Other parts (second, third and so on) remain pending resulting in error few seconds later.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] batman957:
What are the steps

Coming from havoc os 2.9

What twrp is recommended or I can use any for first flash
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
I've started using .EU yesterday for the first time and the difference from Global Stable is brutal. Android 10, bunch of new features, improved smoothness.. so much better! Thanks for all the hard work devs!

In case there's still someone wondering how to install latest weekly, that's how I did it:

Coming from latest Global Stable MIUI 11:

- flash LRteam 3.3.1-1109 TWRP

- reboot to recovery

- format data > type yes

- reboot to recovery

- copy ROM from PC to phone

- install latest weekly EU

- wipe dalvik/cache

- reboot system
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] batman957:
Can I use mauronofrio's twrp the latest unofficial to clean install for the first time

If not can I get a link to LR team's twrp
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
I don't know. Just use the one I mentioned, this one works. I don't have a link, but it was shared here a few pages ago if I'm not mistaken. Just search through this thread.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] batman957:
Do you mean this one
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] farhan20:
So VOLTE support by my carrier but not for mi9t I used to dial this code (*#*#86583#*#*) and volte works but seems in newer version of miui it doesn't work anymore even with that code. But works fine on Older version still idk what's wrong or what xioami did ... Anyone else have any other method to make Volte get working. Thanks!
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
Yes, that one!
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
Is this safe to update? Found it under Settings > Privacy > Security Stats > Google Play System Update

Latest weekly, no root.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] tlf55:
Guys, right now i'm on the latest Weekly Beta Xiaomi.eu rom with Chinese 3.3.1-1109 TWRP .. Decrypting works well. Can i flash the latest mauronofrio's twrp over it and still get decrypting working ?

Because i know in the past Greek TWRP and Chinese TWRP and also Russian TWRP wasn't working well together, we had to format data to have decrypting working again..
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] nidalius:
flashed the last release 9.12.5 everything work flawlessly except installing APK : in permission setting install from unknow sources are enabled for file manager , another file manager same even APK installer same issue

any idea on that
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
This bug will be fixed in next weekly release. ;)
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ber31:
Same here.got it activated by my carrier (Bouygues Telecom, France). Now I've noticed the volte icon gets on only for a few seconds when I switch Sim slot after I've disabled carrier check via code.

But then the icon disappears. And Volte is not working.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] farhan20:
For me doesn't even appears for seconds and Volte doesn't work anymore. I don't know what they did hope they will fix in next update
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ber31:
I'll go back to official miui10 Android 9 rom Tom check if volte works. I'll feedback you guys if that solves it.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] farhan20:
On older version volte is working fine tho. I already tested and working fine ..
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Do it! ;)

It's working
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
9.12.12 added in OP: https://xiaomi.eu/community/index.php?posts/520060
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] solved:
hmm i like to know, am i able to switch from xiaomi.eu 9.12.5 back to MIUI EAA without triggerin' the AntiRollBack?

or is it better to stick to .eu , once u did the jump from miui?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] evolez:
No volte on the latest 9.12.12
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
Widevine is L3 in 9.12.12... :(

Fingerprint info has been changed from "cepheus" (Mi 9) to "daviciin" (Indian K20/Mi 9T).
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] evolez:
Confirmed. Its L3
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
Can someone explain me this? i was on xiaomi eu 10.3.15 stable rom(android 9) and i had widewine L1 so i could watch Netflix videos at 1080p quality, and then decided to flash 11.0.2 stable rom (android 10) and now shows L3... Why is so???

it is interesting because when i tried before weekly xiaomi eu rom 9.11.28 based on android 10, still i had L1 support. Why stable eu rom and beta weekly rom are different? i now flashed back to stable eu rom 10.3.15 again and widewine L1 is back

---------- Post added at 01:02 AM ---------- Previous post was at 12:57 AM ----------

Also stable 11.0.2 xiaomi.eu rom has the same fingerprint "daviciin" and of course L3...

This needs to be fixed on future releases (for both, stable and developer editions) for some people, its a must thing
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
Xiaomi.eu dev team removed their own "fix" on their newest releases (Reason: patch creating bugs...).

I think we need to wait official Global ROM with Android 10 update now to get a working L1 patch by [MENTION=4712355]mauronofrio[/MENTION] dev => https://xdaforums.com/showpost.php?p=81196685&postcount=33

:(
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
Thank you mate, very appreciated for your msg.

i now did a clean( after format data and all necessary wipes) flash and went to developer 9.11.28 (Q) and i think this one is one of the best. Almost a bug free and stable version of all and has L1 support :good:
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] batman957:
Can I flash this from mauronofrio's twrp

And what version is the latest recommend

Btw I don't care about L1 since don't use Netflix plus I already have a backup of it
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] giodeluigi:
Any custom kernel available for Android 10 - MIUI 11 roms?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
9.12.19 added in OP: https://xiaomi.eu/community/index.php?posts/521364
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Nope! Source code of the kernel still not oppend
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] oiram58:
The download link does not work:(
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Benfatica:
It has been pulled, there is a bug
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
9.12.19 reuploaded.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
I don't recommend this latest beta. Full of bugs
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Antyhaker:
What do you mean?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
See the feedback on https://xiaomi.eu/community/threads/9-12-19.53895/page-7#post-521633

I suggest, for now, to stick with 9.12.5. The best beta so far. Some people are even havin black screen with only sound with the latest one on Netflix
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
This issue is for Mi 9T Pro/K20 Pro, not Mi 9T/K20. ;)
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
No, mate... There are feedback from users from different mobiles in previous pages. I was pointed only the forum.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] epicblue8:
Do i need to format the device while installing weekly build over the stable .eu rom?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
9.12.26 added in OP: https://xiaomi.eu/community/index.php?posts/522429
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
Still widewine l3? Any update?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] lolo9393:
L1 was on 9.12.5 weekly.

Few explanation why they removed it, but no visible plan to turn back.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
I am on 9.11.26 still, so i wont update it at all.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Benfatica:
Any one who want wide vide L1 ( that is if you device already has one, if you have broken your wide vine Keys or you device doesn't have one this won't work).

1.Get mix explore from XDA labs and install it.

2.Extract this zip file.

3. Copy the file found inside the lib folder to

root, vendor, lib.

4. And then copy the file found in the lib64 to root, vendor, lib64.

5. Reboot and check your DRM info it should be L1.

Note this won't do anything to your persist partition or break your wide vine key. It currently being used in aosp android 10 ROMs and it works. I have also done this and return to stock miui and my wide vine is still ( L1).

And if this doesn't work or you don't have root do this.

1.Extract the files into your internal storage.

2.Reboot into recovery mount the vendor partition.

3. Go to advance, file manager,

4. Select Sdcard and then copy the file found in the lib folder to vendor, lib.

5. And lib64 to vendor, lib64. Reboot and check your DRM info it should be L1.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pedro Gomes:
Perfect! Wonderful! The best solution! Thank's!

---------- Post added at 02:20 AM ---------- Previous post was at 01:52 AM ----------

If Netflix continues to recognize the system as L3, a fter following the guidance provided by [MENTION=8830510]Benfatica[/MENTION], uninstall and install again, and Netflix must recognize Widevine as L1.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Have you tryed with latest beta? Sorry to ask, but can you check with DRM INFO apk?

This is a really simple solution and have been provide before with flashable zip that stopped working on Android Q. It it works well, I can create a zip and share.

And shameeeee on xiaomi eu team if the only thing needed is this
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pedro Gomes:
Yes, it's work!
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Can't believe. Such a simple solution! Just tryed miself and I confirm it too. Shame that miui eu team didn't solve this.

---------- Post added at 02:00 AM ---------- Previous post was at 01:19 AM ----------

Made a flashable zip. Go into TWRP, mount VENDOR and flash twice just to be sure. Than, wipe dalvik and cache and reboot. Tell me if it worked ;)

The files I'm using are from 9.12.5, so I guess they are the most up to date

https://mega.nz/#!Cw91yYCK!bPUOQ5zYQPrvrLb0DqGpy-EnZVcTwfvGFAHkwd1UkzY
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] lolo9393:
Thanks

I just tested but DRM info stays blind.

I also tested @Benfatica provided files with same results.

Something is strange because the files doesn't have the same size. means they are different.

I also checked the files are written in vendor/etc folder.

what can be wrong?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
Working perfectly, thanks! :)

EDIT: Thanks to [MENTION=8830510]Benfatica[/MENTION] too!
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
When you say DRM info stays blind, you mean that there is no info about widelvine?

Yep, the files has different sizes. I extract mine from 9.12.5. The files provided from benfatica must be from older rom.

---------- Post added at 10:02 AM ---------- Previous post was at 10:00 AM ----------

Niceeeee! Will share in the other post. Such a simple solution. Thanks [MENTION=8830510]Benfatica[/MENTION] for sharing this solution with us
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] evolez:
Still no volte. Last 2 or 3 releases i lost volte. Anyone got solution?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Benfatica:
Tried your zip and it works. And is there a way to restore titanium backups backup without crashing. It always crush when I try to by backups.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Don't know if the problem is with titanium or Android Q or just Miui... What I did was install everything from PlayStore and restore only data. Titanium backup is still the best backup app, but devs don't have much love for it anymore. It has been years since they don't implement some major modifications.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] lolo9393:
I reflashed the rom, Curious, I checked the 2 file are removed and then placed your zip.

Perfect I get back L1 rights.

I have additional stuff than can have messed my phone before.

Thanks again for your work.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] SUMMERBREEZE:
Thank you guys.this zip will work also for stable q?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] sauliiin:
Probably! There is no risk to try. Just make a backup of vendor partition before if you are worried.

Please, report back the result.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] svenerator:
The L1 fix doesn't work for me unfortunately, am on stable .eu rom android 10. I overwritten my persist.img in the past and understood that because of that L1 is gone forever. But the post mentioned even then it would restore it. Can anyone confirm that they managed to get it working even though their persist.img was screwed up?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Benfatica:
No, I won't work, sorry.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
20.1.2 added in OP: https://miuipolska.pl/d/xiaomi.eu/updater/changelog/20.1.2.html
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Ardysan:
So have anyone flashed 20.1.2 yet?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] evolez:
At last volte is back
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
Working perfectly. But still have Email app issue (emails sync issues) despite new 20191206 build version "b2".

And still no Widevine L1 patch by Xiaomi.eu team...
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
20.1.2 reuploaded.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] yolst:
Do you got a workaround for the gmail sync?

And instagram is always starting with sound on in stories, very annoying
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
For Email app issue => https://xiaomi.eu/community/threads/emaill-app-sync-issues-version-20191206.54102/

;)

EDIT: I don't use Instagram so I don't know... :(
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] welder73:
Use InstaPro, it has settings for everything...and you can download whatever you want ;)

https://www.instamod.net/2019/03/instapro-latest-version-apk-download.html?m=1
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Octavian87:
Does anyone know what happens to the signal. I have 4 lines out of 5 signal and the phone was only in the same place. however, the battery always shows a bad signal marked with orange and red and at standby cell 9% without signal. is it a bug or did I really have no signal then?

MI 9T 20.1.2

[IMG="cell standby"]https://xiaomi.eu/community/attachments/screenshot_2020-01-05-15-34-40-159_com-miui-securitycenter-jpg.27952/[/IMG]

[IMG="details battery"]https://xiaomi.eu/community/attachments/screenshot_2020-01-05-15-34-32-840_com-miui-securitycenter-jpg.27953/[/IMG]
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] yolst:
Thanks for the hint, any knowledge about older versions of Gmail also working? I won't use the Mi Mail App
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Micdu70:
Nope, sorry... :(
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Skiamakhia:
I think I'm gonna revert back to the weekly 9.11.7...

Recently I flashed the weekly 9.12.12 with the Debloat&optimization tool and Center clock mod, just like 9.11.7 but somehow this version drains way more battery...

With 9.11.7 I could EASILY last over 2 days, now with 9.12.12 after almost a day or so the battery is already past 40% with "Cell Standby" being the most consuming while not using my phone any different than before, very strange.

Anyone else experiencing this? Or is it fixed in a more recent weekly build?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] robi10101298:
Did you tried 20.1.2? How is it? Is it power hungry? I'm on latest EU stable rom and the battery it's awful, I can't get more than 4h SOT because the usage of android system it's very high..
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Skiamakhia:
No, I haven't tried 20.1.2 yet. Since this is my first (ever) Android device, I'm still careful with new updates and stuff because I'm new to all of this.

Generally speaking I always wait with OS updates cause of some new bugs and such, so the same goes for these updates.

I'd rather wait and see the reactions of other people and then install the update (or not).

On the side note; are you using the Debloat+optimizations tool? It's works like a charm. And have you enabled AFWall+ and AdAway (if used?), this also decreases the battery consumption in a positive way!
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] robi10101298:
Yep, I used this.. Now I have miuimix but I still can't get more than 4h SOT..
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Camerado:
20.1.9 added in OP: https://miuipolska.pl/d/xiaomi.eu/updater/changelog/20.1.9.html
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ber31:
Volte enabled.

Those of you guys having trouble with volte.

Tested on version 20.1.2 (carrier Bouygues Telecom, France).

- Turn off all sims.

- In the dialer:

VoLTE *#*#86583#*#* -> Carrier Volte Check Disabled

VoWIFI *#*#869434#*#* -> Carrier VoWIFI Check Disabled

- Install "Buildprop Editor" app.

- Edit the SYSTEM/BUILD.PROP file:

Remove the Xiaomi blocking lines in the build.prp & add/modify :

persist.dbg.ims_volte_enable=1

persist.dbg.volte_avail_ovr=1

persist.dbg.vt_avail_ovr=1

persist.dbg.wfc_avail_ovr=1

persist.radio.VT_ENABLE=1

persist.radio.rat_on=combine

persist.radio.data_ltd_sys_ind=1

persist.radio.data_con_rprt=1

persist.radio.calls.on.ims=1

persist.radio.volte.dan_support=true

persist.data.iwlan=1

persist.data.iwlan.ipsec.ap=1

persist.sys.cust.lte_config=true

persist.rcs.supported=1

>> Check for duplicates.

- Reboot.

That did the trick. Works flawlessly.

Help yourselves with this more comprehensive tutorial from Mi9 forums if necessary: https://xdaforums.com/showpost.php?p=80159761&postcount=83

Cheers.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] evolez:
I had volte issue before 20.1.2 releases. Some of the few releases before 20.1.2. Cant remember exactly, 2 or 3 releases. With the 20.1.2 it was back itself. no action needed
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] ber31:
Interesting. I always had issues with stock and custom roms alike. Also, I didn't have to go through all the changes in build.prop cited above, only tweak a few lines of codes, but still.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] VzQzZ:
Does anyone noticed some slower animations / less smoothness when using 3rd party launcher? I've tried Lawnchair, Nova, Hyperion and buch others.. Poco Launcher works as great as stock, but it doesn't support Google Feed so I don't wanna use it..