Develop Bugs

Standby drain

When you sleep, does your phone sleep, or does it stay up all night and crunch 1s and 0s? Rate this thread to express how you deem the speed at which the Lenovo ZUK Z2 (Plus)'s battery drains under standby conditions. A higher rating indicates that when the phone is not in use, the battery drains minimally.
Then, drop a comment if you have anything to add!

One of the biggest issues in the current Oreo ROMs is the mobile network standby drain.
People using the Pie alphas should report if it still exists or has been fixed, although I don't see any new baseband and hence the chances of latter are less.

devashish90 said:
One of the biggest issues in the current Oreo ROMs is the mobile network standby drain.
People using the Pie alphas should report if it still exists or has been fixed, although I don't see any new baseband and hence the chances of latter are less.
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The problem still exists in android pie roms too some one should address this serioous issue :crying:

Abhijith2048 said:
The problem still exists in android pie roms too some one should address this serioous issue :crying:
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I think I'm going to flash a really old stock ZUI for the firmware and then flash the legendary AEX 4.6 Nougat. That seems to be the only way forward to get some decent battery life and stability.

devashish90 said:
I think I'm going to flash a really old stock ZUI for the firmware and then flash the legendary AEX 4.6 Nougat. That seems to be the only way forward to get some decent battery life and stability.
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You could also install the viper os 3.0 final build but the problem with that is that it doesnt have the cameraapi 2 enabled on that because of that the google cam wouldnt work. The photos taken by the google cam and stock cam differ in the quality by a huge margin to be ignored

devashish90 said:
I think I'm going to flash a really old stock ZUI for the firmware and then flash the legendary AEX 4.6 Nougat. That seems to be the only way forward to get some decent battery life and stability.
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Which ZUI you would flash? Stock Indian 2.5 or the Chinese ones?

saurav_k said:
Which ZUI you would flash? Stock Indian 2.5 or the Chinese ones?
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I ended up dowloading ZUI 2.0.093 Indian for qfil and ZUI 2.5.104 stock recovery zip (qpst one for this wasn't downloading for me).
I flashed ZUI 2.0 via qfil successfully, and received a small oTA to 2.0.133, and then decided to flash 2.5 via recovery, but failed to get it work. Anyways, decided to go ahead and unlock the BL and then I ended up flashing only the baseband from Indian 2.5.099 (data quota restrictions ).
After that I flashed the last build of AEX 4.6, used it for a day and the standby drain was not like a drain overthere. Unless I did not use hotspot, it wouldn't show up in top 5.
Few hours later, got a notification for a rebased release of Jaguar oreo, and couldn't resist from trying it out. Initial impressions were great, but slowly the standby drain started creeping in, and within a few hours it rose to the top. Luckily I made a nandroid backup of the AEX 4.6 Installation which I reverted to last night.
I do miss the oreo features though

Developers should look around the way Oneplus 6T addressed the issue. Coz I heard, they almost fixed the issue in the new phone.

ShaktiSW said:
Developers should look around the way Oneplus 6T addressed the issue. Coz I heard, they almost fixed the issue in the new phone.
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So does this problem exist for all android phones that are above android Oreo??? or is it just for our phones. The thing iam trying to understand here is that is it google that messed up android or is the developer that created the roms for our phone that messed up. Its actually funny how the phone uses more battery when the phone is not in use.:cyclops::cyclops:

1-2 % within 10 pm to 5 am ( Jio4G + Vodafone 3g ) without data connection

devashish90 said:
I think I'm going to flash a really old stock ZUI for the firmware and then flash the legendary AEX 4.6 Nougat. That seems to be the only way forward to get some decent battery life and stability.
Click to expand...
Click to collapse
Hmm that means that you wouldn't be able to use google cam that means a huge degrade in the picture quality

Abhijith2048 said:
Hmm that means that you wouldn't be able to use google cam that means a huge degrade in the picture quality
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After creating a nandroid backup of fully loaded aex 4.6, I'm back to living on the bleeding edge. Going back to aex 4.6 wasn't as good in terms for battery performance Z I expected it to be.
Currently on october pixel exp pie and the latest gcam pixel3 mod and even the pixel 2 mods frequently crash the phone (kernel panic maybe) during HDR processing. Didn't have time for debugging so received a lot of frowning from family for missed shots and extended wait times but who cares as whatever gcam was able to shoot was unbelievable.
Would be moving to the latest AEX pie with 4.4 kernel soon as I have read that the new kernel will improve the battery life.

devashish90 said:
After creating a nandroid backup of fully loaded aex 4.6, I'm back to living on the bleeding edge. Going back to aex 4.6 wasn't as good in terms for battery performance Z I expected it to be.
Currently on october pixel exp pie and the latest gcam pixel3 mod and even the pixel 2 mods frequently crash the phone (kernel panic maybe) during HDR processing. Didn't have time for debugging so received a lot of frowning from family for missed shots and extended wait times but who cares as whatever gcam was able to shoot was unbelievable.
Would be moving to the latest AEX pie with 4.4 kernel soon as I have read that the new kernel will improve the battery life.
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What? Gcam is exceptionally stable for me, both pixel 2 and 3 moda

devashish90 said:
Currently on october pixel exp pie and the latest gcam pixel3 mod and even the pixel 2 mods frequently crash the phone (kernel panic maybe) during HDR processing.
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Hmm, is this issue specific to Oct build of PE Pie ROM ? Or you witnessed with earlier versions of PE too?

Battery life started decreasing after beginning of Android Oreo 8.1.
I'm using Viper Nougat Final + OSS Cam patch. I'm pretty happy with it.

Is updating firmware to zui 4.0 can solve draining problem

Sumit Saroha said:
1-2 % within 10 pm to 5 am ( Jio4G + Vodafone 3g ) without data connection
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Which rom and baseband do you use ??

ZUI 5 GSI has very low standby drain and SOT is also really good between oreo roms. You can try it once.

mine was so bad
I lose 25-30 percent through the night everynight and, I just replaced my battery for 3 month.
i don't know what's going on.
Can any one recommend me some good battery rom please ?

The battery drain issues are solved
Guys iam happy to report that the battery drain issues are solved on latest build of bootleggers 4.0 rom
Here is a link to it
https://forum.xda-developers.com/lenovo-zuk-z2/development/pie-bootleggers-3-5-shishufied-zuk-z2-t3867112

Which one is a better rom jaguar or viper os?

I'm quite confused between the two, jaguar or viper os?

Use jaguar.. Viper isn't updated to the latest patches

adil786ali63 said:
Use jaguar.. Viper isn't updated to the latest patches
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Other than that there is no difference in viper and jaguar?

satyen_ said:
Other than that there is no difference in viper and jaguar?
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Jaguar focuses on security that's the main difference... but now viper is also updated to the latest... and performing well.. so i would say to go for viper now

satyen_ said:
Other than that there is no difference in viper and jaguar?
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This are two completly diffrent ROM's so there are many differences in both.
Jaguar will recive updates in the future and the dev will continue to work on with Nougat for a few months atleast.
The Viper OS ROM already had its last nougat update, which iirc still contains some bugs.
Viper is based on Lineage using the Heliox Kernel and Jaguar is based on AOSP while using its own Kernel.
You need to check which ROM fits YOUR needs and decide which one you are going to use.

fallen.kn said:
This are two completly diffrent ROM's so there are many differences in both.
Jaguar will recive updates in the future and the dev will continue to work on with Nougat for a few months atleast.
The Viper OS ROM already had its last nougat update, which iirc still contains some bugs.
Viper is based on Lineage using the Heliox Kernel and Jaguar is based on AOSP while using its own Kernel.
You need to check which ROM fits YOUR needs and decide which one you are going to use.
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My main concern is good battery life, good performance(like no lagginess and framedrops), and bug free experience, which rom do you suggest for the following needs?

satyen_ said:
My main concern is good battery life, good performance(like no lagginess and framedrops), and bug free experience, which rom do you suggest for the following needs?
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Jaguar

Jaguar focusses on safety
The ROM is quite smooth however I always face heating issues when doing some heavy tasks and battery life is not that good for me. I use gapps.

greatcoder said:
Jaguar focusses on safety
The ROM is quite smooth however I always face heating issues when doing some heavy tasks and battery life is not that good for me. I use gapps.
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I think that the flashing process for jaguar is little complicated..
So viper whould be fine?

satyen_ said:
My main concern is good battery life, good performance(like no lagginess and framedrops), and bug free experience, which rom do you suggest for the following needs?
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Click to collapse
Go for jaguar then, it has the best performance i've seen (it's overclocked by default and works very well with it, besides boost framework) and it's very stable. I can't tell you about battery life, but most of the people say it's good. And the dev is very active and gives a lot of support, and won't stop developing it afaik.
This is just my personal opinion, you should try for yourself and take your conclusions.

Bt jagur has no volte...how I get volte in jagur

rana.likhi1 said:
Bt jagur has no volte...how I get volte in jagur
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who said that,jaguar has no volte??... watch screenshots.

but, which one is faster,which has a better camera

VIPER for simplicity and long battery life. Personally will suggest Viper
I am currently using viper and used jaguar before. Personally i feel VIPER is lot better in the battery section, simplicity and overall performance.
It's stable and smooth.

Viper OS is Goood
Viper OS has good battery life and Performance.
It also has a lot of customizations.
It doesn't lag at all. I didn't benchmarked it but , I am playing Shadow fight 3 at high graphics very smoothly.
And for battery , I am getting around 6-7hrs of Screen on time.

thank you a lot guys

Best AOSP ROM as of now?

I'm not a big MIUI fan but until the initial 72 hours go by I'm stuck with it... However that doesn't stop me from looking into all kind of AOSP ROMs.
I know that I'll have to test and try them all myself, but I'm curious what all of you are using and why.
My biggest focus is definitely battery life (screen time more so than standby) and I'd love it if any of you could give me numbers on this as well.

MrColdbird said:
I'm not a big MIUI fan but until the initial 72 hours go by I'm stuck with it... However that doesn't stop me from looking into all kind of AOSP ROMs.
I know that I'll have to test and try them all myself, but I'm curious what all of you are using and why.
My biggest focus is definitely battery life (screen time more so than standby) and I'd love it if any of you could give me numbers on this as well.
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Resurrection remix, OmniROM, and LineageOS all share code trees. The differences between them should rally just be the minor feature set differences. I personally use LineageOS, but that is just because I like Lineage.

RR from Arasthel is awesome, just very very bad battery life.
OmiRom, not as smooth as MIUI, but better battery life than RR (but slightly less than MIUI)

Wahoux said:
RR from Arasthel is awesome, just very very bad battery life.
OmiRom, not as smooth as MIUI, but better battery life than RR (but slightly less than MIUI)
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Funny you mention smoothness compared to MIUI.
I find MIUI to be a laggy mess.
So.. it seems Omni is the place to be for battery life?

MrColdbird said:
Funny you mention smoothness compared to MIUI.
I find MIUI to be a laggy mess.
So.. it seems Omni is the place to be for battery life?
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Definitely go Omni, you won't be disappointed.

MrColdbird said:
Funny you mention smoothness compared to MIUI.
I find MIUI to be a laggy mess.
So.. it seems Omni is the place to be for battery life?
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Click to collapse
They're all pretty much the same, Battery life is subjective.

MrColdbird said:
Funny you mention smoothness compared to MIUI.
I find MIUI to be a laggy mess.
So.. it seems Omni is the place to be for battery life?
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Click to collapse
is your device full or has 100 apps running at the background? Miui is very very smooth. If your phone is clean then something wrong is going on with your miui. Some people complained for problems after ota update. A clean install solve the problem.

To add to what @papavales is saying, check what apps have autostart enabled. Great feature from MIUI that gives you great control over resource hungry apps.

I've swtiched from MIUI to Omni weekly builds and Im surprised how good this ROM is. I find xiaomi.eu laggy like hell last time...

yanokashi said:
I've swtiched from MIUI to Omni weekly builds and Im surprised how good this ROM is. I find xiaomi.eu laggy like hell last time...
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Had some time to run the battery through its paces yet? Debating on whether I should go with official or unofficial builds here.
Official would mean hassle-free OTA, but unofficial (judging from the changelog) seems to be better tweaked for our device?

MrColdbird said:
Had some time to run the battery through its paces yet? Debating on whether I should go with official or unofficial builds here.
Official would mean hassle-free OTA, but unofficial (judging from the changelog) seems to be better tweaked for our device?
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In my opinion WEEKLY are better, but thats mine. More stable and in my example more smooth (?)

I've settled for unofficial lineage os for the time being (now that I'm unlocked I need to try them all) and I'm just so happy to be back on AOSP after being forced to endure MIUI for three days waiting on the unlock permission...
The recent screen and notification shade on that thing just kill it for me.
Back in MIUI 4 and 5 they still rocked more or less clean versions of these but everything that came after just ruined it for me.

Best rom to replace official Beta rom with MIUI 10

Which rom you guys recommend to replace official ROM?
I've been reading the threads and it seems every rom has a bug, but i'm actually fed of MIUI and want stock android.

LineageOS 15.1, no bug for me, smoother than MIUI. Just a weak SOT at some moments.

friwave said:
LineageOS 15.1, no bug for me, smoother than MIUI. Just a weak SOT at some moments.
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Thanks for the reply!

Moreover, there is weekly update which is really cool for bug fix and security.

LOS16 is also good rom, it doesn't still have all customizations of regular LOS15, but battery life is better

predragiPredrag said:
LOS16 is also good rom, it doesn't still have all customizations of regular LOS15, but battery life is better
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I'm waiting Official builds to update to LOS16 but I'm glad to know the battery is better than LOS 15.1 (which is not at the top...).

I'd say that LOS 16 is stable enough for daily use
Sent from my MI 5s using Tapatalk

Best ROM for this device?

Hi I've been using the default Xiaomi ROM since I bought this device about a year ago. It was working fine with the Android 9 upgrade, but I noticed Android 10 runs noticeably slow. So I want to change the ROM, but I'm unaware if the issues are because of Xiaomi ****ing up, or if Android 10 is not light enough for the device. So I want to know which custom ROM of the ones available in this forum would best suit me if what I'm looking for is reliability and speed. I would like to stay in Android 10 if possible, so if anyone got experiences with custom Android 10 ROMS that could give some insight into their performance with this device I'd appreciate it. Thanks.

HavocOS is pretty nice, also Pixel Experience is pretty nice but when I was testing it, it had pretty bad battery 5-6h SoT. If I were you I would wait for POSP to be updated which should hopefuly happen soon. I personally use HavocOS vanilla and it works great, only issue I have is bluetooth audio that stutters rarely, and battery might not satisfy you. I get about 8h of SoT, while on stock android one I was able to get 12-13h

Divolka said:
HavocOS is pretty nice, also Pixel Experience is pretty nice but when I was testing it, it had pretty bad battery 5-6h SoT. If I were you I would wait for POSP to be updated which should hopefuly happen soon. I personally use HavocOS vanilla and it works great, only issue I have is bluetooth audio that stutters rarely, and battery might not satisfy you. I get about 8h of SoT, while on stock android one I was able to get 12-13h
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I ended up installing Havoc OS, only issue is camera and flashlight are both not working at all. Do you know how to fix this? I used 10.0.9.0 formware as a base

tralph3 said:
I ended up installing Havoc OS, only issue is camera and flashlight are both not working at all. Do you know how to fix this? I used 10.0.9.0 formware as a base
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I don't have any problem with those, but I used 11.0.10.0 as base and everything works as it should. Also it might be cause by newer version, on 3.8 I had no problems and I didn't install 3.9 yet

Divolka said:
I don't have any problem with those, but I used 11.0.10.0 as base and everything works as it should. Also it might be cause by newer version, on 3.8 I had no problems and I didn't install 3.9 yet
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I had flashed a "gcam_fix" zip that the guide I followed told me to install... had to clean flash again but it's working now.

i'm on aosip pizza + butterfly kernel a bit more than 5 months and never had a problem, performance is great since the install, but its android 9

lucasgta95 said:
i'm on aosip pizza + butterfly kernel a bit more than 5 months and never had a problem, performance is great since the install, but its android 9
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How's the battery life on it? I'm looking for something that runs great and have battery life comparable to that of android one, sadly we all know android one is bugged as hell

Divolka said:
How's the battery life on it? I'm looking for something that runs great and have battery life comparable to that of android one, sadly we all know android one is bugged as hell
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By default the OS is almost not dozing, so you can see a bit more of battery usage, but you can tweak the kernel to save battery and make it last "forever", see the instructions on butterfly kernel post.