Hi guys!
I usually use a 4.3 rom because of this issue but every now and then I feel like flashing a 4.4 rom just to see if it it would go away.
So on every 4.4 rom i used i got crazy 3g related wakelocks. Is anybody experiencing a similar problem? Here is a photo of BBS:
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Thanks to it I've got ****ty battery life (14h tops). I have also tried disabling fast dormancy with this i9300 market app, but it didn't seem to help.
Is there anything I can do?
1. How old your battery is?
2. How much battery life you used to get on 4.3 with similar usage?
3. Which kk ROM you have tried?
4. What was the SOT when you took this screenshot?
1. I guess it's maybe 1,5 years old. I don't expect miracles, but battery time now is patethic.
2. I could reach like two times more, 25h from 100% to 0% with 2h SOT.
3. CM11, SlimKat, and now I am using PAC.
4. I don't remember exactly, but 1,5h tops
Hmm.. looking at your information i can pinpoint it to the 3g wakelock only.
I am finding this on github-
svnet-dormancy / multipdp
Author(s): sven, credits to Entropy512 @xda-dev
Ranking: n/a
Speaking Name: svnet-dormancy / multipdp (those are synonyms, depending on android version)
Rationale: svnet-dormancy is a kernel wakelock related to cell data transfers - Fast dormancy or not, you get a 6 second wakelock any time the radio transfers data
Know actions: Change the duration of the wakelock (use at your own risk). Reduce the wakelock by reducing the amount / number of data traffic requests
Known conditions of occurence:
Caused by data traffic
I am unaware of a solution for this. Maybe someone else will be able to throw more light on this. hang in there.
I'm having exactly the same problem as you, those 3 wakelocks(multipdp, secril_fd and l2_hsic) are killing me. I tried to change ROMs, kernels, radios, but couldn't get rid of them.I've done a lot of research, but didn't come up with the solution for this. I even tried with neatrom, jb version, which is closest to stock, and I have those wakelocks there too.
Any luck?
Hi sheo,
Did you found the root of this problem?
I have the same situation, all kitkat roms I've tried so far (including CM, OMNI, SlimKat and lots which I don't remember anymore) have this wakelock problem.
Some users at the better battery status have tried to help me, but all they suggest is to turn my smartphone in a dumbphone by disabling/uninstalling everything that makes sense to have in a smartphone!
So, (sarcasm=ON) without removing, facebook, google play services, google plus, disconnecting from wifi, going to 2G and dimming my display darker than a black hole, (sarcasm=OFF) were you able to use KitKat on your I9100?
Thank you! :fingers-crossed:
sheo said:
1. I guess it's maybe 1,5 years old. I don't expect miracles, but battery time now is patethic.
2. I could reach like two times more, 25h from 100% to 0% with 2h SOT.
3. CM11, SlimKat, and now I am using PAC.
4. I don't remember exactly, but 1,5h tops
Click to expand...
Click to collapse
hugobitola said:
Hi sheo,
Did you found the root of this problem?
I have the same situation, all kitkat roms I've tried so far (including CM, OMNI, SlimKat and lots which I don't remember anymore) have this wakelock problem.
Some users at the better battery status have tried to help me, but all they suggest is to turn my smartphone in a dumbphone by disabling/uninstalling everything that makes sense to have in a smartphone!
So, (sarcasm=ON) without removing, facebook, google play services, google plus, disconnecting from wifi, going to 2G and dimming my display darker than a black hole, (sarcasm=OFF) were you able to use KitKat on your I9100?
Thank you! :fingers-crossed:
Click to expand...
Click to collapse
Unfortunately, no. I have changed my phone since then, and the problem lasted until the end.
You'll have to learn to live with it.
I did.
Not an option...
Nightshadow931 said:
You'll have to learn to live with it.
I did.
Click to expand...
Click to collapse
Not an option... It stays hot all the time and can't live without a charger for more than 8 hours even without use...
I just switched back to stock rom from my carrier (Brazil Vivo), as there is no wakelock but it is killing me with slowdowns, glitches, bugs... And that sense of using a 2011 (amazing) phone!
I'm just preparing to install SlimSaber Reborn and came to this threat to check for some hope.
See ya!
Related
... about two weeks ago and I love it so far, best phone I've ever owned hands down. The only problem I've experienced is the battery... for example after a full charge, I surfed the web non stop on 4g (hspa) for an hour and 30 minutes and my battery is already down to 65%. Is this normal? My brightness wasn't even high, it was slightly less than half... seems kinda weak considering just about everyone says this phone has the best battery life of all high end Androids.
I'm on 2.3.6
My kernel version is 2.6.35.7
My build number is GINGERBREAD.UCKK6
Thanks in advance!
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Hour and a half of screen on time, not to mention data consumption, yeah that's about right. It's all based on how much you use the phone. Here's a screenshot of my battery life:
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Light use
Miui 2.1.6
Siyah 2.6.6i kernel
Supercharger V6 1000hp script
I average 20hrs of battery life, this was just a test to see how good the battery is.
Sent from my SGH-I777 using xda premium
It may be some other stuff as well. Look in the link below to see if you have any of the known battery drainers. I was suprised at what was causing a lot of my battery drain and after deleting the offending apps/services, I'm getting great battery life.
http://forum.xda-developers.com/showthread.php?t=1308030
2.3.6 on the GS2 has known battery life issues. You can Google "2.3.6 battery life issues" to find links that I'm unable to post here. When originally on 2.3.4, I experienced great battery life - on par with my old iPhone 4. When I upgraded to 2.3.6, battery life was significantly reduced whenever I was connected to wifi (battery drained with the screen off as though I was actively browsing on it).
I concur with what audiotweaker states. You can always go back to a 2.3.4 kernel, easiest way is bundled with a ROM that currently loads that kernel.
jermneedscoffee said:
I concur with what audiotweaker states. You can always go back to a 2.3.4 kernel, easiest way is bundled with a ROM that currently loads that kernel.
Click to expand...
Click to collapse
Um, kernel has NOTHING to do with it. UCKK6 or UCKH7, they all use a 2.6.35.x kernel. Changing the kernel will do NOTHING to change the drain - it's a problem somewhere in the system image, not the kernel.
I did a simple root without any custom ROM using this method: http://forum.xda-developers.com/showthread.php?t=1311081
I had auto upgraded to 2.3.6 from 2.3.4. Using the method in that thread will root your phone + downgrade the OS back to stock 2.3.4.
I am having better battery life since then because of
- ability to better optimize the battery after rooting (Titanium bkp, access to Alarms log through BetterBatteryStats, ability to disable auto start of certain tasks using Super Manager, etc)
- OS 2.3.4 instead of 2.3.6
- misc other battery optimization techniques floating around on xda
Technically, 2.3.6 in general isn't the problem - it's the UCKK6 build specifically.
I don't think the I9100 2.3.6 bases have as many issues - BTHID still broken, but at least it seems like they have less drain issues.
Entropy512 said:
Technically, 2.3.6 in general isn't the problem - it's the UCKK6 build specifically.
I don't think the I9100 2.3.6 bases have as many issues - BTHID still broken, but at least it seems like they have less drain issues.
Click to expand...
Click to collapse
(This was about the first week when I got the phone before I rooted)
I actually was able to talk to a few people at my local AT&T retail store. A few of my friends actually work there as well. I was talking to them about the battery life and they told me it wasn't actually 2.3.6, it was the build that comes with the phone (factory).
Then I got home, flashed a CFW. Battery now lasts about 2 days with just basic web browsing and texting.
Hey guys! Just wondering, if any anyone has heard something about an app, which lets me change the CPU mode, from Quad-, to tripple-, dual-, or singlecore mode...
I haven't found any, yet. (Yes, I have used the invention, called "Google" and consorts)
Thanks in advance for good answers!
BTW: If you are interested why: My battery lasts about 3-4 hours.... -.-
I'll post a screenshot in a moment. I constantly recharge, but not for long, because I am constantly occupied with all sorts of stuff, so it may seen like the batery life is good, on some parts of the graph...
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Sent from my GT-I9300 using xda app-developers app
The system's scheduler, pegasusq, automatically powers down cores when they are not needed.
Reducing the core count has an adverse effect since they need higher clock speeds to compensate and thus require more power.
Your issue most likely is data network and/or apps misbehaving.
Please install BetterBatteryStats (free APK here in XDA) and show it's output after such a 4-5hour cycle.
Did you by any chance disable Fast Dormancy or have you checked if your provider supports it?
d4fseeker said:
The system's scheduler, pegasusq, automatically powers down cores when they are not needed.
Reducing the core count has an adverse effect since they need higher clock speeds to compensate and thus require more power.
Your issue most likely is data network and/or apps misbehaving.
Please install BetterBatteryStats (free APK here in XDA) and show it's output after such a 4-5hour cycle.
Did you by any chance disable Fast Dormancy or have you checked if your provider supports it?
Click to expand...
Click to collapse
No, Fast dormancy is enabled. I'm not yet all to used to the S III, but from my knowledge of my old Nexus, I'd say it's an app, like you also said. But I close my apps, I'll post a better stat, tommorrow. Then hopefully we'll get some results. If not better, I'll go completely stock, just with root...
No, Fast dormancy is enabled.
Click to expand...
Click to collapse
Does the RRC statemachine actually go to IDLE and remain there for several seconds without going to active again? (Well except if there is data traffic)
Or does it regularly go back to an active state (e.g. every 5 seconds)
I'll go completely stock, just with root...
Click to expand...
Click to collapse
Which ROM are you on?
CM9 (and afaik all other AOSP/AOKP-based ROM's) has a huge battery drain and other network-related issues (such as powering down the modem every other time)
Samsung-based ROM's should be fine
d4fseeker said:
Does the RRC statemachine actually go to IDLE and remain there for several seconds without going to active again? (Well except if there is data traffic)
Or does it regularly go back to an active state (e.g. every 5 seconds)
Which ROM are you on?
CM9 (and afaik all other AOSP/AOKP-based ROM's) has a huge battery drain and other network-related issues (such as powering down the modem every other time)
Samsung-based ROM's should be fine
Click to expand...
Click to collapse
What huge battery drain are you talking about? I get awesome battery life on CM9.
Sent from my GT-I9300 using Tapatalk 2
joshnichols189 said:
What huge battery drain are you talking about? I get awesome battery life on CM9.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Obviously battery life depends on the user and apps running, just cause it works for you doesn't mean it will for someone else.
theking_13 said:
Obviously battery life depends on the user and apps running, just cause it works for you doesn't mean it will for someone else.
Click to expand...
Click to collapse
You are pathetic. If you bothered to read, the post I quoted implied it was a widespread issue.
Sent from my GT-I9300 using Tapatalk 2
almost all apps can handle single core operation @ 1.4 ghz, so disabling cores will save you some battery. afaik you need a supporting kernel to achieve this. Im using siyah along with extweaks app, there you can select the number cores to use.
Is this what you're looking for? http://tinyurl.com/77fudrr
I got an S3 a couple of weeks back.
I've noticed that the battery duration is subpar.
I haven't even rooted the device yet and it doesn't seem to be the same for everyone.
On the pic attached you can see that it has been a few hours since disconnected and it has already consumed almost half of the battery.
I wasn't doing much other than about 20 minutes of web surfing, 3 or 4 texts and about 15 of playing music for my car stereo through the aux. Other than that nothing, no pics, no calls, etc.
I'm on 3G (H,H+) all the time. Do you think that's the issue?
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I'm on 3G (H,H+) all the time.
Click to expand...
Click to collapse
Depends. Please use the dialer code *#0011# (or *#*#0011#*#* on AOSP-based ROM's) and check if the RRC-state goes to "IDLE" when your phone has not transferred any data for some time and HSPA is active.
If not, your carrier probably does not disable Fast Dormancy or you have Fast Dormancy disabled for whatever reason.
Please, if rooted, let Better Battery Stats (free APK here in Xda) record the Wakelocks across several hours and make a screenshot of the Kernel wakelocks and Partial wakelocks.
All I can see from your current screenshot is that you're constantly discharging and probably are on an older firmware (Upgrade!) since it doesn't include the Fix for the cosmetic issue causing the Cell standby being battery drain Nr.1
Are you using Apps like Skype or Facebook? Both are known battery drainers.
Have you been in low-signal or no-signal areas?
d4fseeker said:
Depends. Please use the dialer code *#0011# (or *#*#0011#*#* on AOSP-based ROM's) and check if the RRC-state goes to "IDLE" when your phone has not transferred any data for some time and HSPA is active.
If not, your carrier probably does not disable Fast Dormancy or you have Fast Dormancy disabled for whatever reason.
Please, if rooted, let Better Battery Stats (free APK here in Xda) record the Wakelocks across several hours and make a screenshot of the Kernel wakelocks and Partial wakelocks.
All I can see from your current screenshot is that you're constantly discharging and probably are on an older firmware (Upgrade!) since it doesn't include the Fix for the cosmetic issue causing the Cell standby being battery drain Nr.1
Are you using Apps like Skype or Facebook? Both are known battery drainers.
Click to expand...
Click to collapse
Thanks a lot for the reply.
I'm in Mexico and we haven't had the update released here. That's why I haven't upgraded yet.
I'd love to go to CM9 but as it stands I don't want to take risks with the modem, the scene is kind of young still.
I'm not using skype or facebook. I do have them installed but I don't have them running. I actually have sync for FB disable.
I'm very willing to uninstall both if you think it will help.
About RRC-State:
If I'm on wifi it says iddel.
The phone seems to go to HSPA only when downloading something and stays on 3G while idle. While on 3G RCC State reads "FACH".
How can I enable fast dormancy?
By the way, since 12 am today, I have downloaded less than 7MB of data from my mobile network. Anything else has been over wifi.
joshnichols189 said:
Have you been in low-signal or no-signal areas?
Click to expand...
Click to collapse
Not that I noticed. It seems to have good coverage around here. I'm in a 5 million people city and I normally move around a lot due to my work. Seems to be fine in that regard.
While on 3G RCC State reads "FACH".
Click to expand...
Click to collapse
If it doesn't go down to IDLE then fd is confirmed off or not working. However not all providers support it so it's not that easy.
You can try this, but do a backup of the corresponding files first and of course replace wherever required the values with your provider's:
http://forum.xda-developers.com/showpost.php?p=27445663&postcount=1
I'm in Mexico and we haven't had the update released here. That's why I haven't upgraded yet.
Click to expand...
Click to collapse
You don't have to wait, just flash any Rom of your liking, including e.g. Omega ROM. You can flash the CSC back.
I do have them installed but I don't have them running. I actually have sync for FB disable.
Click to expand...
Click to collapse
Try uninstalling or freezing them. It might help. Trial & error
By the way, since 12 am today, I have downloaded less than 7MB of data from my mobile network. Anything else has been over wifi.
Click to expand...
Click to collapse
The problem is, your phone keeps a full-fledged high-speed data connection open at all times since it or the network is unable to go to Fast Dormancy. Open 3G/HSPA connections drain the battery faster than you can look. Talk about carriers sucking you dry =)
I'm in a 5 million people city and I normally move around a lot due to my work.
Click to expand...
Click to collapse
That causes some drain, but not to that extend
I'd love to go to CM9 but as it stands I don't want to take risks with the modem, the scene is kind of young still.
Click to expand...
Click to collapse
The modem doesn't change when flashing CM9. You should flash the BFLB modem though since otherwise you get issues with voice calling.
Plus, you can always go back to stock by flashing your (or a close) firmware from samfirmware.com through Odin.
I highly recommend trying CM9 =)
d4fseeker said:
If it doesn't go down to IDLE then fd is confirmed off or not working. However not all providers support it so it's not that easy.
You can try this, but do a backup of the corresponding files first and of course replace wherever required the values with your provider's:
http://forum.xda-developers.com/showpost.php?p=27445663&postcount=1
You don't have to wait, just flash any Rom of your liking, including e.g. Omega ROM. You can flash the CSC back.
Try uninstalling or freezing them. It might help. Trial & error
The problem is, your phone keeps a full-fledged high-speed data connection open at all times since it or the network is unable to go to Fast Dormancy. Open 3G/HSPA connections drain the battery faster than you can look. Talk about carriers sucking you dry =)
That causes some drain, but not to that extend
The modem doesn't change when flashing CM9. You should flash the BFLB modem though since otherwise you get issues with voice calling.
Plus, you can always go back to stock by flashing your (or a close) firmware from samfirmware.com through Odin.
I highly recommend trying CM9 =)
Click to expand...
Click to collapse
Thanks a lot for the help. I don't think I have the data required for doing that mod for fast dormancy. Most likely that is the culprit then...
I was waiting to root and such because of the flash counter but I guess there is no point in waiting. The phone like this actually doesn't do much for me. It's a pain to be concerned about enough power and I totally need to have the data on all the time (critical work emails). I always carry a backup iPhone 4 in case I have problems with my main android but I rather just use Android all the time (it rocks!).
I guess I'm down for CM9. Just one more question, my firmware doesn't appear as it is on samfirmware. How can I find out which one is closer to the one I got right now?
Edit:
Actually I found it. It wasn't there before but it is now. It might be newer to what I got right now.
I rooted my device and made a nandroid.
Just for research, instead of putting a new ROM I'll try to do a bbs log of my phone as it is to try to find out the reason for the drain although it might very well be the carrier config.
It seems that Mokee has been officially supporting roms for Xiaomi mi3w.
check the link -> http://download.mokeedev.com/?device=cancro&type=
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But random reboots always, so useless like another roms...
@sumit.roy Have you tried flashing the rom? Is it stable any issues faced till now. Is same as CM based or some different rom?
I tried and have the radoom reboots and light sensor dont work also the ring sound its not god
@bozarjoska there is nothing useless here..if you are not interested pls don't use it or comment..respect others work...
cosmicsatish said:
@sumit.roy Have you tried flashing the rom? Is it stable any issues faced till now. Is same as CM based or some different rom?
Click to expand...
Click to collapse
nope.. I had used it when it was unofficial.. has some issues..
plan to flash it by next week as now I am using the aosp rom made using Xiaomi's official kernel.
bozarjoska said:
But random reboots always, so useless like another roms...
Click to expand...
Click to collapse
Hi,
There is nothing useless in XDA Forum and regarding issues of random reboots varun is looking into to fix it till then many of using app to fix use that....Don't say that useless coz if it was useless Dev's wouldnt have released any Rom...Remember always respect the Developers works has they put lot of efforts on it .....Its easy to comment like useless and all but you dont know how hard it is to fix issues/develop a Rom in practical....! never comment that its useless if u dont like it dont use it and dont comment simple
What app will I install to prevent the phone from a random reboot? Thanks.
bluerain28 said:
What app will I install to prevent the phone from a random reboot? Thanks.
Click to expand...
Click to collapse
Captivate keepalive pro..its a paid app..but works well..
praveen7682 said:
Captivate keepalive pro..its a paid app..but works well..
Click to expand...
Click to collapse
but it keeps the cpu active ,so have to compromise with battery savings
ZenR2 said:
but it keeps the cpu active ,so have to compromise with battery savings
Click to expand...
Click to collapse
Hmmm how does the battery with captivate enabled?
bluerain28 said:
Hmmm how does the battery with captivate enabled?
Click to expand...
Click to collapse
you will have battery drain but not much.atleast you can get rid of the random reboots and enjoy the rom.I am a moderate user so i am getting around 15 - 16 hours of battery..
bluerain28 said:
Hmmm how does the battery with captivate enabled?
Click to expand...
Click to collapse
because it always keeps the cpu active,phone just doesn't goes into deep sleep,so that's how it affects the battery life,
but yes on the other side there wll be no reboots.
I was just wondering, then why not lower down CPU freq every time you sleep your phone? As in, lower it to most lowest freq. Yea it won't go to deep sleep but at least no random reboots and battery drain.
Since I don't have this MI3 as of now, you guys can try by installing SetCPU and do some profile settings.
Via the Internet
TiTAN-O-One said:
I was just wondering, then why not lower down CPU freq every time you sleep your phone? As in, lower it to most lowest freq. Yea it won't go to deep sleep but at least no random reboots and battery drain.
Since I don't have this MI3 as of now, you guys can try by installing SetCPU and do some profile settings.
Via the Internet
Click to expand...
Click to collapse
I already thought of this but I went back to AOSP and wait until random reboot is fixed. :crying:
bluerain28 said:
I already thought of this but I went back to AOSP and wait until random reboot is fixed. :crying:
Click to expand...
Click to collapse
Nandroid backup the entire ROM you're using
Via the Internet
Already stop their nightly build.. 4.10.9 is the last one..
A troublesome bug that causes the drain (discharge at high speed of the battery) of the MI8 is caused by the voice Mobile standby, in fact if you go in the battery settings, you will notice a high% of consumption of the item in question.
This is caused because, by default in the Xiaomi rom (China or global) is also the search for frequencies also Chinese, this involves an intensive use of the network module that continues in a way to find these Chinese frequencies, which of course in our country , just as all EU countries do not exist, leading to greater use of autonomy.
Xiaomi is already aware of the problem and will certainly be resolved, when it is not known.
In the meantime, you can solve the problem by yourself, as follows:
Enter the following USSD code *#*#4636#*#* in the dialer.
Set the LTE / WCDMA mode to both SIMs
In this way, only the European frequencies will be used, eliminating the battery drain.
You're welcome btw
https://en.miui.com/forum.php?mod=redirect&goto=findpost&ptid=4953373&pid=33446288
It's also a pretty old bug, somebody else had the same idea 4 months ago:
https://xiaomi.eu/community/threads...by-of-mi8-caused-by-td-scdma-searching.46054/
When you reboot the phone it returns to the old settings!
Done, let's see now.
Thanks for the info
nfsmw_gr said:
Done, let's see now.
Thanks for the info
Click to expand...
Click to collapse
When you reboot the phone it returns to the old settings!
denzel09 said:
When you reboot the phone it returns to the old settings!
Click to expand...
Click to collapse
On miui perfhaps yes.
I'm on Syberia and it stayed like that.
Well, not a big hassle, I mean I reboot my phone once a week.
nfsmw_gr said:
On miui perfhaps yes.
I'm on Syberia and it stayed like that.
Well, not a big hassle, I mean I reboot my phone once a week.
Click to expand...
Click to collapse
Come on.. this is not s solution. We have spent a considerable amount of money to buy this beautiful phone. But Xiaomi releases updates with no sufficient testing prior launch and this is actually annoying.
DV1973 said:
Come on.. this is not s solution. We have spent a considerable amount of money to buy this beautiful phone. But Xiaomi releases updates with no sufficient testing prior launch and this is actually annoying.
Click to expand...
Click to collapse
I agree with you, I really do.
But even if you searched about the device you want to buy even for months before getting it you'll see there is absolutely no device existing without at least 2-3 issues out there.
Even pixels which are what android is and more than that, have problems.
You either bear with it, or stop using smartphones.
And the second option is not a viable choice for me.
P. S. Got a poco before the Mi 8 and refunded it because of the touch lag, I know that Xiaomi doesn't test enough, be it software or hardware.
nfsmw_gr said:
I agree with you, I really do.
But even if you searched about the device you want to buy even for months before getting it you'll see there is absolutely no device existing without at least 2-3 issues out there.
Even pixels which are what android is and more than that, have problems.
You either bear with it, or stop using smartphones.
And the second option is not a viable choice for me.
P. S. Got a poco before the Mi 8 and refunded it because of the touch lag, I know that Xiaomi doesn't test enough, be it software or hardware.
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I really respect what you say and most likely you are right but what now? You see I am using the phone professionally and battery is crucial for me.
Thanks for the advice. There is battery drain with V10.1.2.0. Cell standby. BTW, you can reach the menu by repeatedly tapping on "Internal Storage" in the "My device" settings. There are some "secret" links in settings.
DV1973 said:
I really respect what you say and most likely you are right but what now? You see I am using the phone professionally and battery is crucial for me.
Click to expand...
Click to collapse
If this bothers you that much then either flash a custom rom on it, or refund/sell the device and get something else, maybe an OP6T.
I ran a little test today to find out if other devices handle it better and it does appear to be so. Mido battery drain with LTE/WCDMA and LTE/TD-SCDMA/UMTS was exactly the same.
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But the cell signal history wasn't...
Redmi Note 4X, Xiaomi.eu 9.5, 70km Highway drive with Waze and internet music stream running, fixed display brightness. Same route in both tests, just opposite directions - hence me flipping 2nd signal history in the following screenshot:
I ran a similiar test on my MI 8 a week ago and there were massive differences in battery drain and signal history...like I said I think MI 8 has a baseband issue that somehow can get amplified by the MIUI default network mode setting.
well i seen someone said that global beta 8.12.20 it is way better.anyone tried it around here?i was thinking of trying it myself actually...i think i'll do and came back with some feedback.
idk I've been on global beta since 10.0.3.0 global stable release and I've had all of these issues. It's possible that android 9 adaptive battery feature in beta 8.12.20 helps a bit.
Make sure non interactive scenes are disabled in settings \ battery \ scenes
I have the same problem, my drain was 40% in 8 h in standby mode. I flash my phone to miui 9 and then i update to miui 10 - 10.3.3 global, then i clean al my programs and i don't update sistem apps from Xiaomi. At last i turn off my phone and i charge up to 100%. Now my drain battery per night is 5-6% and last almost 2 days?. Good luck!