yashsingh1/xdaforums huggingface dataset:
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
download https://gitlab.com/JBBgameich/halium-install/ and unzip

download the following 4 files (including flash.sh)and move to the above folder

xenial-hybris-android9-rootfs-arm64 [Jenkins]

ci.ubports.com

AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

www.androidfilehost.com

system.img | by MathewDennis for Redmi Note 3 Pro

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

www.androidfilehost.com

now to install use flash.sh script ./flash.sh

NOTE : ui freezes after initial setup (issue is related to user data) ..let me know if u find a fix for this
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Executed flash.sh, terminal output is attached. Phone rebooted as expected after the flash, Ubuntu Touch boot animation appeared but phone immediately shut down. Turned it on again, and it bootlooped on the Ubuntu Touch animation, alhough curiously the screen timeout was functional (turned off after a few seconds and successful wake with power button).

Wiped all and reflashed again, same result. Could I have simply gotten unlucky with a broken rootfs build from the Jenkins pipeline?
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
Lomiri - the graphical UI - UBports documentation

sudo mount -o remount,rw /

sudo -i # And enter your password

cat /var/lib/lxc/android/rootfs/ueventd*.rc|grep ^/dev|sed -e 's/^\/dev\///'|awk '{printf "ACTION==\"add\", KERNEL==\"%s\", OWNER=\"%s\", GROUP=\"%s\", MODE=\"%s\"\n",$1,$3,$4,$2}' | sed -e 's/\r//' >/usr/lib/lxc-android-config/70-kenzo.rules

#for wifi

echo 1>/etc/init/wifi.conf

reboot

sorry ..forgot to mention this..
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Noob question, but where do I execute them? ADB shell?
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
Ssh
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
I am unable to access ssh since the phone isn't connected to the wifi. ^^'

Edit: Tried to perform an ADB pull and mounted the images on my laptop; modified and pushed back. Phone refused to boot.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
ssh phablet@10.15.19.82

sudo mount -o remount,rw /
sudo -i # And enter your password
cat /var/lib/lxc/android/rootfs/ueventd*.rc|grep ^/dev|sed -e 's/^\/dev\///'|awk '{printf "ACTION==\"add\", KERNEL==\"%s\", OWNER=\"%s\", GROUP=\"%s\", MODE=\"%s\"\n",$1,$3,$4,$2}' | sed -e 's/\r//' >/usr/lib/lxc-android-config/70-kenzo.rules
#for wifi
echo 1>/etc/init/wifi.conf
reboot
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
I did, and the result did not change:
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
Connect ur phone to laptop ...do a new wired network show up ...if yes open terminal and connect via ssh To the device using ...

ssh phablet@10.15.19.82
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
What I meant was that I successfully sshed into my phone, and executed the commands you told me to execute - it still gets stuck on boot animation.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
it will take around 15 to 20 min for the first boot ..due to the issue I mentioned earlier...
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Waited half an hour, still stuck.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] KrutosVIP:
Getting error 1 with Updater, what i`m doing wrong? (Flashable zip v3)
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Just reboot; it should work anyway.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
https://www.androidfilehost.com/?fid=7161016148664814914

bro ,try this
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Clean flashed halium 9 boot img and then the installer zip. System booted, got past the boot animation, but locked out after the setup. App drawer wouldn't load, notification bar wouldn't respond. Orientation was still changing correctly, along with screen timeout. Power menu responded to touch. Rebooting showed the "welcome to 16.04" onboarding but locked out as well.

---

Clean flashed halium 7 boot img, and then installer zip v3. Rebooted to system, finished setup.

Rebooted to recovery, deleted contents of /data excluding /user-data, /system-data, /android-data and /media.

Flashed halium 9 boot img and test installer zip. Rebooted to system; system is functional.

On my previous try, only preserved /data/user-data, and system booted but required a non-existent passphrase, and device name was reset to "Ubuntu". /data/system-data seemingly needs to be preserved to not get locked out.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
But this does not fix the actual problem ...(assuming it to be some permission being denied by the kernal) ...

Also can you check if data calls and audio are working properly...had done fixes for those ....
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] Kn8Ryder:
Audio works well (played some Tux Racer :P). I'm afraid I can't test mobile data or calls because I don't currently use SIM cards.

And yeah, dirty flashing halium 9 is more of a workaround than a fix. Will let you know if I find something else.
[Xiaomi Redmi Note 3 [Snapdragon] ROMs, Kernels, Re] mathew..denniss:
waydroid is working on kenzo (halium 9)

#waydroid fix

sudo mount -o remount,rw /
sudo apt update
sudo apt install waydroid
sudo waydroid init

#as phablet user run:

#sudo stop waydroid-container
#sudo umount -l /home/.waydroid/rootfs
#sudo resize2fs #/home/.waydroid/images/vendor.img 1G
#sudo start waydroid-container
#waydroid session start

sudo -s
mount -o rw,remount /home/.waydroid/rootfs/vendor

cp /system/lib64/libui.so /home/.waydroid/rootfs/vendor/lib64/libui.so
cp /system/lib64/libbinder.so /home/.waydroid/rootfs/vendor/lib64/libbinder.so
cp /system/lib64/android.hardware.graphics.allocator@2.0.so /home/.waydroid/rootfs/vendor/lib64/android.hardware.graphics.allocator@2.0.so
cp /system/lib64/android.hardware.configstore@1.0.so /home/.waydroid/rootfs/vendor/lib64/android.hardware.configstore@1.0.so
cp /system/lib64/android.hardware.configstore-utils.so /home/.waydroid/rootfs/vendor/lib64/android.hardware.configstore-utils.so
cp /system/lib64/android.hardware.configstore@1.1.so /home/.waydroid/rootfs/vendor/lib64/android.hardware.configstore@1.1.so

rm /home/.waydroid/host-permissions/android.hardware.consumerir.xml
echo "done , if it still dont boot check waydroid logcatfor missing libs"
reboot
[Xiaomi Mi 11] dromaczek:
Hi, i would like to buy Mi 11,

Is wonder is photo / video (night mode) so good?

Now i have mi 9t and photo is nice, night video is awfull. (i use google camera+configs and miui camera)

Is in mi 11 better? A lot of better photos? and videos?
[Xiaomi Mi 11] ralovesoc:
Haven't taken too many pics/vids, but yeah, xiaomi have imrpoved their cameras since the Mi 9 days!
[Xiaomi Mi 11] Sage:
not top of the line though check out dxomark its in the top 10.
[Xiaomi Mi 11] Danacy:
I never understood the DxO-marks. I am happy with my Mi11 but the photo's I would give a 7/10. Night-mode is okay, but nothing in the photo can move. It basically just has a longer exposure so the photo will have more light but also more noise. Zooming in is always a bad idea. My Mi9T Pro (48mp) made the same photos with Gcam as the Mi11 stock. Gcam Mi11 doesn't improve much just yet, maybe in the future.

Overall I am not that impressed with the camera. Selfie-cam is pretty good though..
[Tilt, TyTN II, MDA Vario III General] redenvy20:
Hi, I currently have the HTC Tilt OEM Rom on my ATT TILT, and it was configured for sending text message, but the problem was it kept sending text messages. What could be the problem? It would send doubles or even 8 of the same text. I have reset it and everything. Is it Windows Mobile 6.1? Or what ? Thank you.
[Tilt, TyTN II, MDA Vario III General] BlakeH1:
i also had a problem with txting...everything would run great and then i would try to send or view a txt message and it would freeze or slow WAY down..reflashed 6.1 and its working good now.
[General Questions and Answers] Vesh1984:
Hi guys,

I have a terrible problem with my father's DOOGEE S55.

The phone won't start, but recovery mode does.

So I can access recovery, but as USB debug was never activated on the phone (and the phone is not rooted of course) I can do almost nothing with ADB.

I can just activate "apply update from ADB" and ADB sees the phone as "sideload", but of course once i try to install the ZIP file of the firmware, nothing happens as USB debug is not activated.

In all other cases ADB cannot do anything as the device is always "unautorized".

So the question is: what can I do?

Thank you all in advance for your help mates!
[General Questions and Answers] :
Hint: Add DOOGEE S55 to this thread's title thus mainly owners of such phone get addressed.

The 1st thing of all things a serious owner of a mobile device is to enable ADB to have the door to the device's Android open in case it's necessary. :) My guess is you're out of luck.
[General Questions and Answers] Vesh1984:
I know but this is my father's phone he does not know how to enable usb debugging of corse..
[General Questions and Answers] :
Believe it or not, that to clone phone's user-data both ADB must got successfully enabled on phone and additonally phone's Android must got successfully rooted: there is no way around it.
[General Questions and Answers] ferreraiury05:
Hello. I have a Galaxy A01 (SM-A015M) and I want to unlock its bootloader, but I can't do that with Android 10 Bootloader. The problem is that I line in Brazil and we don't have any update, so I thought "What if I upgrade to android 11 with other countries codes?"

But I have no idea if it would work or if I could do that. I'm afraid of bricking my phone. Can I install archives from Argentina? Like BL, AP, CP and CSC?
[General Questions and Answers] :
A bootloader never is country dependent. A mobile device's bootloader is comparable to UEFI/BIOS in the world of PCs.

Purpose of a device's bootloader is to verify Android OS hasn't got tampered in any way and, if verification was successful, then initialize device's hardware and finally start Android OS.

Unlocking the bootloader simply means to force skipping the verification process, nothing else.
[General Questions and Answers] ferreraiury05:
I know it, what I meant is that If I install another software I'll have problems with my cell phone? I need a unlocked bootloader cause root is very important for me. I would have problems with VoLTE, VoWIFI and Ril?
[OnePlus 9 Pro] :
Is there a way i can recover my data ? I need to recover my kid's graduation pictures. I will pay for help if I need too.

I was rooted and using 11.2.4.4.LE15AA. I uninstalled Magisk then i tried updating to 11.2.5.5 via ota , it kept saying install failed i need to reboot and now I'm stuck in fastboot.

edit: and now it doesn't turn off.

Im a flipping idiot.

Thanks in advance.
[OnePlus 9 Pro] Shooter7889:
https://mega.nz/file/7YQj3SIR#5yDfje2mVgPVRdZi-gYrDRvvQE2hx_DYD00vicZH8Fo

This is a zip from one of the top 3 pinned threads on this OP9P forum that has stock and patched boot.img from your 4.4AA build..(if thats what ur phone is still on). U may be able to download the zip, put on ur pc, extract it, then open cmd and fastboot boot (then drag the stock boot.img to the command prompt u typed in) and hit enter.. It may work to get u back booted unrooted...🙏
[OnePlus 9 Pro] :
Crap that didn't work. I'm so beyond screwed. I wonder IF and when TWRP comes out if I will be able to decrypt then.
[OnePlus 9 Pro] craznazn:
Try flashing 4.4 or 5.5 full OTA via fastboot/fastbootd. If you are gonna try the 5.5 then you gotta use EU/India.

TWRP at this point is a pipe dream. Decrypt doesn't even work for A10 on OP and Android is moving faster than TWRP can keep up.
[OnePlus 9 Pro] :
Is that where i flash all the individual .imgs with fastboot? or just system.img
[OnePlus 9 Pro] craznazn:
Individual
[OnePlus 9 Pro] Steve0007:
In case this comes from magisk modules, just try to reboot in safe mode:

Safe Mode

1. Hold power until it goes off

2. Boot and wait for the bootloader warning

3. Hold vol up and down until boot animation

4. Once it's booted just reboot again and you're done

Now on boot all magisk modules are disabled

Other option, have you try to flash your original boot!
[OnePlus 9 Pro] :
I get this for several of the img files.

FAILED (remote: Flashing is not allowed for Critical Partitions

But I'm able to get to recovery now, with this error

boot reason fs_mgr_mount_all
[OnePlus 9 Pro] Steve0007:
Fastbootd for critical partitions (not fastboot)
[OnePlus 9 Pro] :
I wiped it.

close the thread.
[OnePlus 9 Pro] nujackk:
Oh too bad i had your solution, as ihad the same problem last week.

For anyone else in this situation you have to flash the stock boot img to opposite partition. Then boot to that partition. Get your data off at that point before you do anything else. Then try to re-root
[OnePlus 7 Pro Questions & Answers] Migbar:
Hi I will be ordering a one plus 7 pro

t-mobile unlocked and hate the t-mobile firmware so I want to install the international firmware and was wondering if doing so would remove the unlock from the phone making the phone locked to t-mobile
[OnePlus 7 Pro Questions & Answers] weakNPCdotCom:
What is it about the T-Mobile firmware that you hate? IIRC the only difference is international enables dual sim
[OnePlus 7 Pro Questions & Answers] Migbar:
I just hate the boot logo, bloatware and I heard the international firmware runs alot smoother plus gets updates quicker
[OnePlus 7 Pro Questions & Answers] greyblue9:
Are you asking if the bootloader would become re-locked, or if the SIM would become carrier locked? Are both currently unlocked?
[OnePlus 7 Pro Questions & Answers] weakNPCdotCom:
Once you are carrier unlocked you are always carrier unlocked. But flashing international wont make you carrier unlocked. You have to have someone on the T-Mobile side do that for you.
[OnePlus 7 Pro Questions & Answers] Migbar:
I'm ordering a tmobile unlocked oneplus 7 pro from Amazon and was wondering if I flash the international firmware could the sim carrier relock
[OnePlus 7 Pro Questions & Answers] Migbar:
So would the Amazon renewed oneplus 7 pro tmobile gsm unlocked be permanently carrier unlocked?
[OnePlus 7 Pro Questions & Answers] Ju5t3nC4s3:
MSM tool will not relock the sim. The lock is in the efs. And this is not flashed by MSM.so you are good to go. But before flashing ,if you are scared it will lock, you can use qfil or edl.py with the firehose programmer elf .and make a backup of modemst1 and modemst2. With these 2 copyed in the unlocked state ,u will be ok. I have locked and unlocked the sim many times for testing by having backups of locked modemst1 and 2 and unlocked. U can go back and forth all u like.alway back these up ,they will only work for your device. With the same HW I'd.
[Mogul, XV6800 General] stanelie:
Hello.

Has anyone managed to get windows mobile 6 built-in voip to work with the latest DCD roms?

If so, how?

Kitchen? Cab install? Which cabs to use?

Thanks!
[Huawei P40 Pro Guides, News, & Discussion] Spamista:
Tried to downgrade my P40 PRO version ELS-LGRP4-OVS 10.1.0.178 with the Hi Suite proxy method, but when i go to HiSuite there is no red point indicating that there is another version avaliable. If a manually click Update system it says i have the lastest version,

Is the firmware in this page https://pro-teammt.ru/en/online-firmware-database/?firmware_model=ELS-LGRP4-OVS&firmware_page=0 still up?, i'm trying to use ELS-LGRP4-OVS 10.1.0.131 (2020.06.01) FullOTA-MF, but i get no results.

Currently i'm using gspace, but i've read it is malware.
[Huawei P40 Pro Guides, News, & Discussion] faceliler:
Sometimes you don't do anything wrong it it simply doesn't work. Simply uninstall both HiSuite and Proxy from your computer, install the HiSuite version that the proxy works with (DO NOT UPDATE HiSuite) and reset your modem, then try again
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
Why don't you use USB Memory + OTG adapter +Dload firmware? What region (Cxxx) is your installed firmware?
[Huawei P40 Pro Guides, News, & Discussion] joaopunk:
Where do you sugest downloading the firmware from?

Cheers!
[Huawei P40 Pro Guides, News, & Discussion] joaopunk:
I mannaged to have everything working in the past. Screen change at huwawei, reset phone...stucked with 10.1.0.176 version.

Untill now, same problem as @Spamista
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
See the disclaimer.
[Huawei P40 Pro Guides, News, & Discussion] joaopunk:
Ok. So I did it.

Only method available is this one with the usb dongle and a flashdrive formated via NTFS.

Then downloaded C432 rom in the description of the video, unziped it and place the Dload file in to the root of the flashdrive. Just follow each step in the video and that´s preety much it.

Thanks a lot @badmania98

@Spamista
[Huawei P40 Pro Guides, News, & Discussion] Spamista:
Good night.

My region is C605.

I haven't found the firmware on a version that works with googlefier.
[Huawei P40 Pro Guides, News, & Discussion] Herijuana:
View attachment 5392823

Hallo.

Versuche gerade mein Matepad Pro downzugraden aber bei Hisuite Proxy wird mir die Proxy Adresse und der Port in roten Zahlen angezeigt anstatt in blauen. Habe leider noch keine Lösung dafür gefunden, bitte um rasche Hilfe!!

Grüße
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
Read no. 4.

📚 XDA Developers Forum Rules 📚

XDA-Developers FORUM RULES List of Forum Moderators, click HERE Delete Your XDA Account HERE 1. Search before posting. Use one of our search functions before posting or creating a new thread. Whether you have a question or just something new...

xdaforums.com
[Huawei P40 Pro Guides, News, & Discussion] Herijuana:
Hey.

Sry but i don't found something about this Problem :/
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
You already found something. You started write in English. It is a good start, isn't it? And this is not an option, it is a rule.
[Huawei P40 Pro Guides, News, & Discussion] Herijuana:
O.K.
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
Despite this is P40 pro topic, you can try to find a solution for your problem here:

https://xdaforums.com/t/huawei-firm-finder-huawei-firm-archive-2021-edition.4255049/
[Huawei P40 Pro Guides, News, & Discussion] Herijuana:
Yeah, I know. But It was a Problem with Hisuite Proxy Software. And you need this for downgrading all Models of Huawei, thats why ive posted the question here. I looked really much on Google, but I can't find the problem. Maybe I'll find here the solution for my Problem. But thx anyway. Dont wanted to breake a rule with it, just looked for someone who can help me with this. Regards
[Huawei P40 Pro Guides, News, & Discussion] badmania98:
@IProfessor , the creator of that topic will help you if he can. Just post there.
[Huawei P40 Pro Guides, News, & Discussion] Xceeder:
No need to downgrade, I used phone clone which was preinstalled on latest firmware, I even got my banking apps on, all you need is another phone with phone clone installed ( your wife, your girlfriend) then on the (example your wife's phone) install the apps you want and then and connect to two phones through phone clone and that's it, some apps won't work but a lot will.....
[Xiaomi Mi 11 Ultra] Blubber120:
Hi all,

does somebody know, where I am able to buy a longer cable, about 2 meters, with the capability of very fast loading? I am from germany. Thanx in advance.
[Xiaomi Mi 11 Ultra] Afg Playa:
I am using these cables. They work great and the "turbo charging" status while charging proves it.

https://a.aliexpress.com/_mq07M7r
[Xiaomi Mi 11 Ultra] picitup:
Hi

By fast loading,do you mean fast charging? There's this item on ebay:

5A Fast Charging For Samsung Galaxy S8 S9 S20 Note10 Type C USB-C Data Cable Lot | eBay

Find many great new & used options and get the best deals for 5A Fast Charging For Samsung Galaxy S8 S9 S20 Note10 Type C USB-C Data Cable Lot at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

It is advertised as 5 amps, so should be quick for charging.

Hope this helps :)
[Xiaomi Mi 11 Ultra] dikemon:
For Mi 11 pro?

There are two options?

1.USB C to USB A Cable(6A)

2.USB C to USB C Cable(5A)
[Xiaomi Mi 11 Ultra] unrated87:
I bought several of these:

https://a.aliexpress.com/_mLXTxKt
[Xiaomi Mi 11 Ultra] Afg Playa:
Does your phone show turbo charging while charging?
[Xiaomi Mi 11 Ultra] JazonX:
What's the correct way to identify the charging speed ?

Spent a lot on AE cables, and almost all of them shows "Charging Rapidly" only.

Cant complain about the charging speed, however I'm not sure whether the cables are working at the optimum speed. Most Baseus / OnePlus cables I bought are no go. All those 60W / 45W numbers are just numbers.
[Xiaomi Mi 11 Ultra] Blubber120:
Thank all of you.
[Xiaomi Mi 11 Ultra] unrated87:
Of course
[Xiaomi Mi 11 Ultra] Droidbullet:
Where can I buy a car adapter that supports Turbo charge?
[Xiaomi Mi 11 Ultra] speedtripler:
Accubattery can tell you how much juice is flowing in and how many minutes it will take to reach full etc
[Xiaomi Mi 11 Ultra] jim262:
Please look on line, you know search the web. I would bet something turns up,
[Xiaomi Mi 11 Ultra] speedtripler:
eBay.de
[Xiaomi Mi 11 Ultra] Sathelp:
I have bought several 3m cables from eBay. They all work with fast quick and turbo speeds. I was so happy, I bought some more in case the price goes up. Link here
[Samsung Galaxy A21s Questions & Answers] Flame75:
I have been recently trying to root my galaxy a21 and I have discovered that the apps I try to root it with won't work because of the missing OEM unlock option. I have seen the guides about setting back the date and the whole Prenormal RMM thing, but I have had the phone and a samsung account for about 6 months at this point. I also read something that said that samsung removed the option on non-international phones. I was wondering if anyone here knows how I can get the OEM unlock option to appear, thanks! (also it's one core UI ver 2.1, idk if that helps)
[Samsung Galaxy A21s Questions & Answers] jonnirage:
Damn, there is literally no love for this Galaxy A21 phone. lol. I am in the same boat as you. :(
[ASUS ZenFone 8] NisseGurra:
Anyone found the EDL files for Zenfone 8?, needed to recover from bricked state
[Touch CDMA Windows Mobile ROM Development] detusueno:
Hey does anyone know a program that makes custom tsks capable of creating mixed flat and glossy bar themes? I have a tsk that does this (flat top, glossy bottom) but want to adjust the colors.
[Xiaomi Poco X3 Pro] exhumator:
Hey, we do not have option to set always on display on Poco X3 Pro,but is there any way to do that? Or any aplication? I try some from Googleplay, but they are for amoled screens. Thanks for any answers :) .
[Xiaomi Poco X3 Pro] thorin0815:
An always on display makes no sense with an IPS panel.
[Xiaomi Poco X3 Pro] officialauxter:
no sense? how bout LG G7? still no sense?
[Xiaomi Poco X3 Pro] thorin0815:
I don't know this device.

Cut&Paste from Quora (I'm lazy!):

Here’s the main difference between OLED screens and LCD screens: when an OLED screen displays black, the pixels are powered off, so the battery is not being drained by the screen but when an LCD screen displays black, it does so by tinting the backlight dark, which means the screen is still generating light and is hence draining the battery.

An always on display requires the screen to show the time (and some extra details) constantly. In an OLED screen, this means only the pixels that are displaying the time are turned on, which results in less battery drain. But when it comes to LCD displays, there’s no difference in battery drain during always on display versus normal usage (taking into consideration only battery drain due to display).