[Mi 9][MIUI 12] Extreme battery drain on Standby


andrecuellar

Members
Jan 8, 2019
2
13
Hello, I have MIUI 12 (xiaomi.eu) since May 2, those days I didn't feel many battery problems (I don't remember), however last night something happened that caught my attention, I went to sleep with approximately 80% (or more) battery and woke up with the phone turned off!
I tried to turn it on and it turned off, I turned it back on and it turned on with 3% battery!

someone suffer a similar situation?
29515
 

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AhriHunter004

Members
May 21, 2020
1
3
Hello,
I have been experiencing the same problem. My phone is 5 months old, it was working just fine and the battery was also lasting for 9-10 hours but after the last security update that took place in the start of May, my battery started draining so quickly. Sometimes, jumping from 80% to 5% in less than an hour!!!
Is there someone who has experienced the same thing?
 

Giuskiller995

Members
Jan 11, 2020
39
20
I have battery drain too, on a different device tough. 1h active and 4h standby and I’ve lost 40-50% during the standby phase...with clean install, no root and no super wallpapers activated. It’s a MIUI 12 Beta problem which i hope will be solved by the official team (it’s their fault)


Inviato dal mio iPad utilizzando Tapatalk Pro
 
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Whisk3y

Members
May 5, 2020
31
10
Hello, I have MIUI 12 (xiaomi.eu) since May 2, those days I didn't feel many battery problems (I don't remember), however last night something happened that caught my attention, I went to sleep with approximately 80% (or more) battery and woke up with the phone turned off!
I tried to turn it on and it turned off, I turned it back on and it turned on with 3% battery!

someone suffer a similar situation?
View attachment 29515
Must be something wrong with your battery? Or maybe try clean install again? Not much battery drain on my Mi 9 with super wallpapers disabled. Good luck!
 

Whisk3y

Members
May 5, 2020
31
10
I have battery drain too, on a different device tough. 1h active and 4h standby and I’ve lost 40-50% during the standby phase...with clean install, no root and no super wallpapers activated. It’s a MIUI 12 Beta problem which i hope will be solved by the official team (it’s their fault)


Inviato dal mio iPad utilizzando Tapatalk Pro
Try updating to the latest beta of miui 12. Seems to be less battery drain for me. Good luck!
 

Whisk3y

Members
May 5, 2020
31
10
Hello,
I have been experiencing the same problem. My phone is 5 months old, it was working just fine and the battery was also lasting for 9-10 hours but after the last security update that took place in the start of May, my battery started draining so quickly. Sometimes, jumping from 80% to 5% in less than an hour!!!
Is there someone who has experienced the same thing?
Try updating to the latest beta of miui 12 or try clean install if you dirty flashed it. Should solve the problem. Good luck!
 

murilo_foletto

Members
Jun 18, 2020
64
10
Did anyone solve the problem? I'm currently using the beta 20.7.9 and there's still some battery drain. I don't even have 3h of active use. Does anyone know if it's better in stable version?

Sent from my MI 9 using Tapatalk
 

leledumbo

Members
Jul 26, 2013
368
52
Did anyone solve the problem? I'm currently using the beta 20.7.9 and there's still some battery drain. I don't even have 3h of active use. Does anyone know if it's better in stable version?

Sent from my MI 9 using Tapatalk
On a second reboot after calibration (full discharge then full charge without break with phone turned off, unplug then turn on) it's the same as MIUI 11. I can still get 4-5 hours SoT over 20-24 hours per charge.
 

murilo_foletto

Members
Jun 18, 2020
64
10
On a second reboot after calibration (full discharge then full charge without break with phone turned off, unplug then turn on) it's the same as MIUI 11. I can still get 4-5 hours SoT over 20-24 hours per charge.
Thanks for the tip off calibrating the battery, I'll give it a try.
Hope this helps, because I'm really surprised if my active use drain... In normal use (WhatsApp, Instagram...) I get about 15-20%/h...
My mi 9 is 7 months old

Sent from my MI 9 using Tapatalk
 

murilo_foletto

Members
Jun 18, 2020
64
10
One more thing... Does anyone know that "others" could mean in battery stats?

I believe my battery is a bit better. I've clean installed the new weekly release yesterday. However, There are some apps, like mi Video, that I restricted auto started and I didn't even open it and consumed some battery....


Sent from my MI 9 using Tapatalk
 

Robert86

Members
Jul 20, 2020
19
5
On a second reboot after calibration (full discharge then full charge without break with phone turned off, unplug then turn on) it's the same as MIUI 11. I can still get 4-5 hours SoT over 20-24 hours per charge.
I have do you recomendation, is always good, when u say full discharge u mean battery 0 cero % percent ? and then pluging into charge adapter and wait for full charge unplug then turn on ?
 

murilo_foletto

Members
Jun 18, 2020
64
10
Is there anything that I can do to solve this battery drain?
Bluetooth, GPS, sync and location are off. Auto starts apps are restricted...
Even though I got almost 20% of usage with very few SoT


Sent from my MI 9 using Tapatalk
 

leledumbo

Members
Jul 26, 2013
368
52
Is there anything that I can do to solve this battery drain?
Wakelock Detector used to be working to detect "never sleep" case like this, but it's been outdated for so long and not working in current Android version. Turning off all of those features might actually trigger this problem actually, not all apps adhere to the rule. Some may keep trying to connect to sync or find nearby devices and that prevents the device to sleep because it hasn't gotten the data it needs. I say try enabling everything for some days, a week or so, and see if it got better. You might also need to re-check permissions as this has been "improved" (in the name of privacy, well a lot of people requested it so here's the fruit) and some apps fail to access some features that were available for them in previous MIUI version. I got this problem with AquaMail, correcting the permission fixes it.