yashsingh1/xdaforums huggingface dataset:
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] ZetaDarus:
Latest update is awsome, battery life is back to normal, evolution was my favorite rom due to how stable it is, but battery life was absolutely awful on 4.2, i did a clean flash and now everything is good again, awsome update!

Seems like there's some weird issues with the pop up notification light not working and the volume slider not showing extra sliders, but both can be dealt with in the settings
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] stephano1985:
Is there a solution for this problem? Had the same issue with Pixel experience ROM, thats why I switched to this ROM. Unless this issue is not resolved, I will stay with 03-05-2020
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] hieuvts:
Could you share a screenshot about screen on time on your device?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] GarnetSunset:
I get really slow fingerprint reads on this rom, expected? I'm getting like 2 second reads.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] xmsxms:
deleted
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
I think it could be helpful to share this with you:

I came from Vendor 11.0.4 and the March Version, I dirty flashed and almost everything is working.

1. Download Vendor (I used the EU one): xiaomifirmwareupdater.com/vendor/davinci/

2. Download Update 4.3 (the latest Evolution X)

3. Flash both in Recovery (Vendor first)

4. Reboot

5. Now you could also flash ANX Camera (latest version) and the 48mp fix: camera.aeonax.com/#legend

Bugs: The Notification LED is always on after you use the front camera

Fix: Go Into Settings > System > Front Camera Effects and turn Camera LED off.

Everything else is working fine for me, it's an amazing rom
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] gtx11:
Hello there I have a problem, when I play a song the sound doesn't work and to fix the problem I have to lower and raise the volume and after that the audio will play.

But when another track is played the audio will stop again and I have to do the same procedure to make it work.

Anyone have the same problem? Is there a way to solve this bug?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] malakaton6:
What rom is best for battery life? Lineage os or evolution X? Thanks
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
My Mi 9T dies after 5 Hours screen on time in Evolution X, but I saw screenshots from other users who had 10 hours screen on time. It would be very nice if someone could explain to me how my battery is so much worse than on mi UI (it's 5 Hours instead of 10!)

On the Mi 9T Pro of a friend (also running with Evolution X) the battery is amazing.

So I think I've done something wrong, but I don't know what.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] LeFel:
Same here ! Have to charge the phone during the day.

Amazing fluidity but battery life is really weak.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] JuanSdAlo:
Too bad, we got the worst developer for our device, updates even later than Xiaomi itself. I stopped using this ROM for that!
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] xellosx:
You do understand that akito is the one maintaining/developping the whole project of evolution X and no he is not just the maintainer of our device he is the developper for the whole Rom which other maintainers build for other devices x)
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] JuanSdAlo:
I ignored it, so I apologize, sorry!
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Bender80:
What if someone who has good battery life could make an backup image of a "bald installed rom" and share it.

Would it solve the battery issue for others?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] cgwplf:
I installed music player called "Blackplayer" and had to select in options>advanced, tab where it says- Select Audio Decorder(MediaPlayer is by deffault, you have to select ExoPlayer option) haven't got any problems since, hope this helps out :good:
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] cireyay:
It's difficult to talk about battery life when everyone has different usage habits and using the built in Android battery usage chart isn't the best either...

This is my typical usage pattern, my phone is charged to 80%, drains about 6-7% over 8 hours overnight. I use it for discord, web browsing (which includes occasional short videos,) Reddit, reading news, WhatsApp & gmail on a 1/2 to 3/4 hr commute to work. I hardly use the phone at work, usually only during lunchtime(1/2 hr at most) to check WhatsApp, Gmail & Reddit. Same usage for the commute home.

So approximately after 2 hrs of light usage, 16 hrs of standby, my battery hits the 40-45% mark. That's 35-40% of drain which I consider to be good, not great. I disable Gmail background sync, Google activity sync and other services which I know impacts battery life. Only key things are left on WhatsApp.

So when one says X hrs sot, what is being done? gaming? Spotify? I know from my habits that web browsing on average consumes 10%/hr. So I charge to full and only web browse, sure I'll get 10 hrs SOT.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Joakin2k:
He is like the founder of the rom his rom, it's just his hobby , go to other rom you don't have tell us
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] yuvaneshwaren:
Hi, what's the best gcam for MI 9t??
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] lazyaf01:
Urnyx05 or burial
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] yuvaneshwaren:
Why does gcam crash when i switch to another lens in video mode
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] lazyaf01:
Idk. I prefer ANXCamera for videos.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
On Mi UI I got 10 hours while watching YouTube videos. The battery now isn't terrible at all, but I just wanted to know if there's someway to get that 10 hours YouTube Watching back, without going back to Mi UI (because I won't go back to Mi UI).

And does someone else also doesn't hear people while making a video call? (Whatsapp and Google Duo). I can only hear them when I'm connected to Bluetooth. Normal calls are working fine.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] cireyay:
I don't make much WhatsApp video calls but I had no problems with one I made a few weeks ago.

As for battery life, well I don't think it's possible with custom ROMs. It's just a trade-off one has to live with when choosing custom ROMs.

I think Xiaomi is able to optimise miui very well, after all they own it and have been working on it for a very long time. So the knowledge and expertise is there.

Perhaps you can take a look at xiaomi.eu, the EU version of miui? It's heavily based on stock miui but with changes. Hence better battery life.

Btw just curious, why do you watch 10 hrs of YouTube lol in a day, that's a lot of time spent on YouTube hah
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Ok, the Whatsapp Bug is probably the result of dirty flashing the update which specifically shouldn't be dirty flashed.

I'm using 10 hours YouTube just on a few days. I sometimes don't watch YouTube during the week, and then I'm catching up on weekends.

The battery is just a bit worse. The K20 Pro of a friend (I also flashed Evolution X) has better battery. But I like Evolution X much more then Mi UI. Even the .EU rom is still Mi UI, and I think "stock Android" is much nicer. I also like that I can customize so much. I just remember the "old days" with my s4 mini, or OnePlus 3T, when I got about 1-2 hours more screen on time after flashing a custom rom.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Jobe1105:
I'm experiencing the same bug you're experiencing by the way. I found so far that the bug extends to other apps and always happens when you either do a video call or turn on your loud speaker during calls.

Also, do you have Facebook installed? I got extremely great battery life (like only charge once a day) when I deleted my Facebook app and installed some Facebook wrapper app.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Thank you, that's interesting. I don't have Facebook installed, but I have a lot of apps I don't use. I think it's time to uninstall some apps, some of them are definitely running in the background. I thought that that wouldn't make a huge difference, but I will test it now.

Did you dirty flash the last update, or is that Bug with video calls also present on an clean update? (If you are using the latest version)
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Jobe1105:
I did a clean update so it's not a dirty flash bug. I'm still looking for a way to fix it at the moment.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] desmoloch:
Does this rom have AOD? I tested it a day and could not find settings for AOD. Now i switched to another rom.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Yes. You can find it under Display > Lock screen Display > Always on. It's also a Quick Settings Tile.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] pcm2a:
I have a security camera app CamHi. On this rom, on LTE, the CamHi app cannot connect to any of my cameras. On other roms it can (on LTE) and on other phones it can (on LTE). On wifi it works fine. It's the most puzzling thing I've seen and I have no idea how to debug it. Almost like this rom is blocking it's access when not on wifi.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Garnica1999:
I have a MI 9T and it is the best ROM I have tried so far, but there is a big problem. Battery consumption, or at least in my case, is too aggressive, in 20 minutes of using the phone the rom consumes 10% of battery. The batteries in deep sleep is very good and hardly consumes batteries when in idle mode, but in active mode it consumes too much.

The worst thing is that it happens to me with all the ROMs that I have tried AOSP, EvolutionX, PixelExp and Havoc.

It is the only "bug" that makes me go back, if I did not have this bug I would stay in this ROM.

I thought that the culprit was magisk, but no, reinstall the rom by installing MIUI 11 Stock and then the ROM without magisk and it has the same battery consumption, so it is a bug, but I do not know if it is my phone or it is as such the roms AOSP of MI 9T.

I do not know if there is any solution in this regard, or I am installing it wrong. I clarify that I am following the instructions published in the main post but I do not get a solution.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Yes. Battery is amazing in deep sleep, but when you actually use your phone it's really bad. I don't think you that you are installing it wrong, everyone with a Mi 9T and a custom rom I talked to has bad battery. I flashed the Mi 9T Pro of a friend and her battery is fine. I tried different things to solve it, uninstalled half of my apps, restricted the background usage of almost every other app, but battery is still bad. I don't think that there's any solution. I will try out a few more things, but I guess I also have to go back to MiUI ?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Garnica1999:
Apparently I will also have to return to MIUI, the battery consumption in all custom roms based on AOSP is excessive when the device is active.

Now, with the SmartPack application I have looked at the behavior of the CPU in these ROMS, and they have a pattern. Big cores are overused, but I don't know if it is a system process that is using these cores or it is a kernel bug. Trying to disable the second BIG core usage drops to 0% on all BIG cores, but the frequencies remain at 1.5 GHz. I don't know if it is a bug or normal.

Probably the great use of battery in all AOSP roms is due to the mismanagement of the Big.little architecture according to what I have observed. Even so, with the above the battery use does not increase too much, its durability is increased very slightly.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Jobe1105:
I've been experiencing the same thing as well. There's probably no fix for it considering all the custom roms and kernels do not fix this problem.

---------- Post added at 06:41 AM ---------- Previous post was at 06:41 AM ----------

I'll be joining you guys in returning to MIUI. I've already flashed the stable MIUI 12 from Xiaomi.eu and my overall battery life and stability have been the greatest since I started using custom roms. I just changed the theme to something that uses round icons and made stock launcher use an app drawer to make the experience better.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] yuvaneshwaren:
Guys is this rom dead?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Hello, I've two questions. Did you flash the Xiaomi.EU rom just with TWRP, or did you flash it via fastboot?

And is google pay working on Xiaomi.EU? I've read somewhere that it's buggy and only works sometimes. I'm using it almost every day, so it would be great if it would work.

I'll probably flash it tomorrow...
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] spring_roll:
I can't confirm that all Mi 9T custom ROMS have bad battery life. With PE Plus I have about 7-8 hours SOT (AOD enabled, GPS+Bluetooth enabled because of Covid tracing app).
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Garnica1999:
I have tested PE plus, evolution X and Havoc, they all have poor battery performance when the phone is in use, when in IDLE the battery performance is amazing.

I am currently testing Bliss OS to see how well the battery performs.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] spring_roll:
I just made a test: 1 hour video playback, YouTube Vanced, 1080p, brightness 50%, volume 50%, mobile data

MSM-Extended: 19%/hour

PE Plus: 10%/hour

As you can see, there are great differences between those ROMs. I didn't test Evolution X, because there are many posts in this thread complaining about bad battery life. I like the additional features of all those custom ROMs, but good battery life is very important for me and the only custom ROM with good battery life for Mi 9T I found so far is PE Plus.

I am writing this so that guys like one-juru don't have to go back to ?Miui just because of the battery life:o
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] soza971:
It could be helpfull to do it with evo

Envoyé de mon Mi 9T en utilisant Tapatalk
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Thank you. I will definitely try out Pixel Experience Plus.

Do you think I can dirty flash it over Evolution X, or should I do a clean flash? I just don't want to lose (or backup and restore) my data again, but I would if it's necessary. I'm using this phone as my daily driver, and it has to be fully usable and setup on Monday, that's why I'm asking if I could do a dirty flash.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Garnica1999:
In my case PE plus gives me a very bad performance from the battery too, just like this ROM. With Bliss ROM it gave me 3 and a half hours from 100% to 58% current battery. That if, I had to correct the bug of the use of Big cores because they are active and loaded being unnecessary.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] spring_roll:
No, you can't dirty flash. I tried it and got Error 7 in TWRP. You have to backup your data and format data in TWRP. That's also the reason why I won't make the "1 hour video playing test" on Evolution X, because this phone is also my daily driver and after the test I would go back to PE Plus and I would have to set everything up again:p
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Okay guys, seems like I've fixed it.

I'm to tired to test it any more, but I watched 22 Minutes of YouTube (on 50% brightness, Wifi) and only lost 2% battery. That's amazing.

Edit: Don't know why it was that good yesterday, but now I only lose 12% per hour while watching YouTube. (= 8 hours Screen on Time in total). Big improvement to bevor.

-------

I read a suggestion on reddit to try a different vendor.

So I've flashed the Global Vendor 11.0.5 from the "official" Telegram Group for Evolution X on the K20 / Mi 9T. This Vendor also replace the boot logo (That Mi.com logo on start up) with a clean google logo.

I don't now why, but the ANX Camera got removed. I guess you can flash it again. I will try that tomorrow.

I still only hear other people in video calls when using a Bluetooth headset, so that did not fix that bug.

But the Battery Drain is fixed, and the whole device somehow feels more responsive. I've only used it for an hour with this Vendor, but as far as I can tell, battery drain is fixed, and performance got better.

-------

IMPORTANT: YOU WILL LOSE YOUR ANX CAMERA. YOU HAVE TO RE-FLASH IT WHIT MAGISK, TWRP METHOD NOT WORKING.

ALSO: FLASHING THE OLD ORIGINAL VENDOR AFTER YOU FLASHED THIS CUSTOM VERSION WILL RESULT IN A SOFT BRICK. YOU WILL BE STUCK AT FASTBOOT. (I experienced this 2 Minutes ago)

-------

If you want to try it out: (at least I did these steps)

1. Boot into twrp

2. Backup current vendor (if you want to go back)

3. Flash the custom global vendor (link below)

3. I also wiped dalvik cache

4. Reboot.

-------

This is the link to the vendor I used (working on the latest Evolution X):

https://mega.nz/file/mi4QFYAI#wzlgPULPKUtYl1dU6CeYf2AET8rR95Q1ilCuVXxJuXE

-------

This is the link to the Telegram group someone mentioned in one post on one of the first pages:

https://t.me/EvolutionXDavinci

-------

My Battery is amazing now (at least the one hour I used my phone)

Hope that I could help you.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
Here's a screenshot. I just flashed it, and used it a bit. I watched a bit YouTube. I'm too tired to make a long test, but it's definitely a huge improvement. I will test it tomorrow.

Edit: Just that nobody is confused. I charged my phone to 84% and started testing (at 00:01) because I was tired and did not wanted to wait until it reached 100%

Edit: I tested some more, and the Battery while watching YouTube drop round about 1% every 5 minutes, so 12% per hour. Much better than before.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Jobe1105:
Sorry for the late of a reply, but I'm glad to see you were able to fix the Evo battery problem. Just in case anyone would like to switch here are the steps for installing the Xiaomi.eu rom on TWRP:

1. Format Data (Go to Wipe -> click Format Data)

2. Wipe System + Cache

3. Reboot to recovery

4. Install Xiaomi.eu rom (For me, I just installed their MIUI 12 Stable)

Google Pay works well with MIUI as long as you have Magisk installed. All I did to make it work was just install the SQLite for arm64 devices module by ianmacd (in the Magisk repo) and the GPay SQLite Fix by 73sydney (you can find it somewhere in XDA Forums).
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
After flashing the vendor the ANX Camera app disappeared. I just downloaded a newer version and installed it again with TWRP.

While installing it said that there is already an version installed (an older version), so it uninstalled it, and installed the never one. But the ANX Camera still is not showing up in the system. That's totally confusing.

During the installation in TWRP there is a part where the script echos device is recognised as >>><<< and I know that bevor I flashed that vendor file, my device was recognised as davinci. Now its just empty. So don't flash that custom vendor, or your ANX Camera is broken.

I read that you have to flash the ANX Camera via Magisk after you flash that custom Vendor (which fixed the battery drain) TWRP method not working after flashing this custom vendor. I'm using Google Pay, and I don't want to lose that, so I'm not going to root my phone to install the ANX Camera.

Edit: I tried it. You get some errors when flashing ANX in Magisk, but after a few reboots it should work. But I want to use my banking apps and Google Pay.

So if you want to have better battery you can flash that custom vendor, Magisk and then the ANX Camera. But you will probably lose your google pay, or at least it will not work Everytime. (And I don't want to try to pay and only get errors when my phone is the only way to pay)

IMPORTANT: WHATEVER YOU DO, DON'T FLASH THE ORIGINAL VENDOR OVER THE CUSTOM VENDOR OR YOU WILL BE STUCK AT FASTBOOT. Guess what happened to me 2 minutes ago.
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] kkk_maverick:
Some bugs

There are some problems in adjusting brightness in manual mode... it's too low and when you come out of app (noticed while playing pubg)it becomes too high...also mic doesn't work properly while playing pubg...
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] kkk_maverick:
While playing pubg mobile headphones mic is not working...I have to disconnect it 2-3 times and reconnect it again again to make it work...it is so annoying...please help me
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] kkk_maverick:
Battery Drain

It has battery drain issue too ?...maybe because of auto brightness or something else...I don't know...also there is microphone issue in pubg(headphones)...help me out please I really liked this rom otherwise
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] balgad:
I tried to install this ROM but after installing it in TWRP (no error message) it reboots only to TWRP again it does not start the system.

First I used original TWRP from twrp.me, then a I tried mauronofrio's TWRP (both 3.3 and 3.4 versions) they are the same. After clicking "Reboot to system", Xiaomi "Unlocked" screen appears for some seconds then it disappears, appears again and it boots back to TWRP. It is the same as it was with some other ROM here on XDA, altought "TitaniumOS" works well.

Does anybody idea how to fix this?

Thanks
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] one-juru:
You can fix the battery drain. I made a post about that on page 71 (it's that long post at the bottom, which starts with „Ok guys, seems like I've fixed it“)

Be aware that you have to root your phone with Magisk Manager if you still want to use the ANX Camera App (a port from the official Camera from Xiaomi), because if you follow the steps, your ANX Camera App is gone (every other Camera app is still working).

I don't know how to fix the mix issue, but at least you can fix the drain.

---------- Post added at 09:36 PM ---------- Previous post was at 09:28 PM ----------

Could be a problem with the vendor you flashed. If you still want to try Evolution X out, try flashing the newest firmware (not only the vendor) and try again. After flashing the newest firmware, follow the instructions on the first post. That should work.

I uses the official version of TWRP and it worked for me. (After a few attempts)
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] kkk_maverick:
While I use video calling app like Imo I can't hear other persons voice on speaker...also some battery draining issues are there but it is slightly fixed by naptime app...also we have mic issue in pubg (headphones)
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Nechoya:
I've just updated to the may 4.3 version and everything is running smoothly, but the camera app I had installed is gone and the new one gives me a Camera error saying "Can't connect to the camera". First time I opened it my front camera popped up and then hid itself but now nothing is happening anymore. I've tried other cameras from google play but they all just crash. Is there a fix for that? Already tried dirty flashing the update to no avail.

In the process of debugging the issue I opened discord, which has a built in camera, and while the main camera didn't work(black picture) I could switch to front facing camera which opened, but instantly closed and caused system to reboot :/
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] RobertEstrada05:
Last update is from May... No more updates?
[Redmi K20 / Xiaomi Mi 9T ROMs, Kernels, Recoveries] Badis st:
Dev said he will update it when he gets time.