Develop Bugs

WiFi Scanning constantly

I have been having poor battery life since I got this device on launch day. I just noticed today that my Wifi is constantly scanning even though it is connected. I usually keep Wifi on most of the time since I have really slow 3g at home and the building I work in is like a concrete bunker built in the 1970s so nobody gets very good service in there.
Anybody else notice this?
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Yeah mine does this too but my battery life is still good.
Sent from my SPH-D710 using XDA App

this is also happening to me, and it is KILLING MY BATTERY!!!! really frustrating.

What do i look for to notice if its scanning constantly? is it the popup that comes up? with the networks that are in range?

i installed a free app called "watchdog lite", and it notifies me everytime my cpu usage goes over 50%, and at this time, i open watchdog, and it tells me "android system" is using 90%+ of the cpu... <<-- this happened EVERY 5 MINUTES when wifi is on. with wifi off, this only happened once in a while, maybe once every couple hours...
screenshow below: the critical battery drop happened when i turned on wifi, and CPU usage was going over 50% every other minute, and i restarted phone...
btw, this wifi issue does NOT happen when the phone is connected to a charger
Kikoshi said:
What do i look for to notice if its scanning constantly? is it the popup that comes up? with the networks that are in range?
Click to expand...
Click to collapse

I've noticed this as well and I believe its also negatively impacting battery life. Its interesting that it would continue to scan while its connected.
Sent using Tapatalk on my Super EpicTouch 4G

I posted on this earlier this morning. My wifi also turns off after about 4 to 5 minutes. I can toggle it off then back on ever time but this can't be normal.

Vegasrich said:
I posted on this earlier this morning. My wifi also turns off after about 4 to 5 minutes. I can toggle it off then back on ever time but this can't be normal.
Click to expand...
Click to collapse
Mine as well. Exchanged one for that reason and this one does it too.
The Evo3D Killer!!!

I'm hoping we get a fix for this soon.

Same here..
Sent from my SPH-D710 using XDA App

I see it now....damn never looked there actually. So is basically a bug.

Fixed yet?

I think multiple people (myself included) have confirmed that this was normal behavior - it scans constantly, yet there's no battery drain associated with it.
It seems that whenever you are on that Wifi settings page, it keep scanning constantly. But when you leave the page, it stops doing it that often (or at least doesn't drain the batter.)
You can check that by turning off wifi and still noticing big drain - which would indicate that wifi isn't the issue.
Now, there may also be a bug where this constant scanning actually continues. But like I said, it doesn't do it for everyone.

Use y5 battery saver from the market. It turns on and off with known networks and helps alot.
Sent from my SPH-D710 using xda premium

My wife's is doing this and it is definitely affecting battery. Viewing the battery graph, it does a decline of about 30 degrees with only 3G on and with wifi on it does a treacherous drop of about 50 degrees. I've actually told her to just leave 3G on all the time because it is easier on the battery. Hoping for a fix soon.

Mine scans a lot but doesn't hurt the battery. With moderate use im at 50% with 12 hours on.

Anyone else getting Wifi connecting and disconnecting about 5 to 10 minutes.

Vegasrich said:
Anyone else getting Wifi connecting and disconnecting about 5 to 10 minutes.
Click to expand...
Click to collapse
Check your wifi sleep policy.
Samsung Galaxy S II

J-u-i-c-e d-e-f-e-n-d-e-r

If you want to try something, change WiFi Sleep Policy to *never*.
It seems counterintuitive, but the bug where Android system uses a lot of CPU uses much more power than setting WiFi Sleep Policy to never as the WiFi is using very little power when not transmitting data while Android system is just sucking up your battery with this bug.

[Q] Wrong stats on Bluetooth activity

Hello, i'm using betterbatterystats to check my battery life.
Everything is OK but i have a strange behaviour.
The App says that my bluetooth is always ON
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but my Bluetooth is always OFF :
and i double checked in Parameters, and even restarted my phone, still same problem ....
Then today i checked my batterys stats and i get this :
My log is 19h10m5s long, and i have 2% of Bluetooth time.
But when i look at bluetooth time it says also 19h10m5s
so it should be 100 %, shouldn't it ?
Anybody also experiencing these strange Bluetooth stats ?
My Bluetooth is ON or OFF ?
Thanks.

battery stats doesn't really work, looking about the forums you see if you put wifi on all the time it says you have No or unknown signal for the same time as wifi was on.
you can look at your own screen shot for this one
seems it doesn't report as it should on the HOX

Hi, it is quite sure that betterbatterystats doesn't work but it's the system logs which is in fault not the app itself.
Even the stock app shows strange values on Bluetooth and wifi as you mentioned ...
In the case of the One X it is very useful to read those stats, but if they are totally wrong, how can we do a correct analysis of battery drain ...
By chance it is rarely bluetooth or wifi that drains the battery.

apagado es mejor!!!

19+ hours on battery with 65% left, and you call that a drain?
DanRZ said:
Hi, it is quite sure that betterbatterystats doesn't work but it's the system logs which is in fault not the app itself.
Even the stock app shows strange values on Bluettoth and wifi as you mentioned ...
In the case of the One X it is very useful to read those stats, but if they are totally wrong, how can we do a correct analysis of battery drain ...
By chance it is rarely bluetooth or wifi that drains the battery.
Click to expand...
Click to collapse

Hello, i have no drain, and never said that.
I just noticed those strange bluetooth stats when checking battery usage ...

Can you disable widget locker and associated power widgets in you home screens and figure out?
I would imagine some kind of interaction comes into the equation with these 3rd party programs.
Bonne chance.

Hello, thanks, it is a good idea ...
I removed the power widget on the home page and disabled widget locker.
I restarted my phone. Weirdly i had to insist to restart the phone.
When pushing power button, after 3 seconds, the lower buttons were blinking
but it didn't start, and then keeping power button 3 ou 5 seconds longer the phone restarted .
That is not the first time i noticed that the phone doesn't start or stop normally ...
At restart, i didn't see 100 % "bluetooth on" in betterbatterystats.
It looks like problem is solved ...
I will let the phone like that for a moment and put again the power widget on home page to see if i get the error back.
And then activate back widget locker.
Merci.

I activated the bluetooth for some minutes and turned it off.
Now i see on betterbatterystats that it is still ON in stats.
I refresh and the time "bluetooth on" is increasing.
I will wait a moment to see if bluetooth appears on "stock" battery stats.
It looks like a android system issue with bluetooth stats

treebill said:
battery stats doesn't really work, looking about the forums you see if you put wifi on all the time it says you have No or unknown signal for the same time as wifi was on.
you can look at your own screen shot for this one
seems it doesn't report as it should on the HOX
Click to expand...
Click to collapse
If you feel you have found a bug in BBS I would be glad to help you clarifying what is wrong (or fix what has to be fixed). But please take the discussion to the right thread.

msm_hsic_host wakelock

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A great explanation of the msm_hsic_host wakelock issue by "thracemerin" on the xda-dev forum
I didnt understand the issue previously, but this sheds light on it for me.. http://forum.xda-developers.com/showthread.php?t=2155461
"The msm_hsic_host wakelock is because the 3G modem is connected to the phone as an external USB device controlled by the hsic host controller. When the modem wakes up for any reason (apps sync, location, tower ping, etc...) the wakelock is requested. The problem is that the hsic host controller doesn't go back into suspend mode properly, this is a problem with the kernel. The result is that because the hsic host controller isn't asleep the phone wont enter deep sleep while it waits for the hsic host to suspend.
There is the additional issue that if your signal is poor the operations that caused the wakelock in the first place take longer to complete thus lengthening the time the wakelock is held.
The issue is significantly reduced on WiFi for obvious reasons, all the data is transmitted via WiFi so the 3G modem doesn't need to wake up nearly as often, it still wakes up to deal with tower checks and that sort of thing to ensure that it has voice connectivity, but those events are much rarer.
There are kernels available that attempt to solve this problem, Harsh kernel as suggested by another user has fixes in it along with a lot of other changes, the fixed kernel I'm working on is stock with these changes as well, either should help, it's not possible to eliminate this wakelock completely without shutting down the 3G modem which would of course prevent data and voice use of the phone, but they will reduce the wakelock and may help with your battery life."
http://www.reddit.com/r/nexus4/comments/199bd3/a_great_explanation_of_the_msm_hsic_host_wakelock/
So? How Sony will handle this?

I thought this was already fixed by Google in mainline kernel, this issue is pretty old one.
Remember, this wakelock is not possible to eliminate completely, it's pretty much the synonym to your phone receiving/transmitting any kind of network traffic over 3G. And lot of apps cause regular incoming packets each of which will wake up the phone. That's why to big extent Sony introduced Stamina mode.

Well for me it was busy for 21m8sec on 5h29h of idling. Phone was on WIFI all the time.

Phone was on Wi-Fi, but you don't have Wi-Fi set to be on only when screen on do you? Also, maybe you've enabled "use only good Wi-Fi connections?" As for myself I see noticeable time in this wakelock only when away from Wi-Fi

Ingvarr said:
Phone was on Wi-Fi, but you don't have Wi-Fi set to be on only when screen on do you? Also, maybe you've enabled "use only good Wi-Fi connections?" As for myself I see noticeable time in this wakelock only when away from Wi-Fi
Click to expand...
Click to collapse
For me wifi is always on and "use only good wifi connections" is OFF

DoubleYouPee said:
For me wifi is always on and "use only good wifi connections" is OFF
Click to expand...
Click to collapse
Try switching mobile data off completely.
Maybe your operator sending you ping packets regularly or something like that.

Ingvarr said:
Try switching mobile data off completely.
Maybe your operator sending you ping packets regularly or something like that.
Click to expand...
Click to collapse
Well it is off when wifi is on....right? Turning the option off shouldn't make a difference

DoubleYouPee said:
Well it is off when wifi is on....right? Turning the option off shouldn't make a difference
Click to expand...
Click to collapse
Just try it out.
Also, if you have Google Now on, switch it off.

Check out wake lock time ratio... My battery is getting killed I run stock 4.3.

Uhm... I've updated my kernel with the latest release from Ziddey (which uses Franco's as a base and adds USB OTG support).
After that I noticed this problem. I've noticed it in the past and fixed it by reflashing a previous version, so I restored a previous kernel but the problem remained.
So, in an attempt to understand what was causing the problem I reinstalled the latest kernel again, only this time not fixing the permissions after flashing it. The problem seemed to be gone. I realized that every time I've had the problem in the past it was after fixing the permissions in TWRP (it asks if I want to fix permissions before reboot every time I flash a new kernel).
Could it be only a weird coincidence?
BTW, I usually never fixed the permissions because I thought it was a TWRP bug/mistake.
I'm doing some tests right now.
[EDIT] P.S. I know it's unlikely that's the culprit of the problem... But...

Hi. I bought this phone for my wife a few years back and recently she told me her battery was draining so I installed Better Battery Stats and found out the same wakelock issue in this post. She is using latest stock rom and the issue happens even if on wifi. I can't seem to find any other information about this issue. Any ideas?
BTW, sorry for necro.

Wifi is till on while in flight mode - leading to slow battery drain

Hello experts,
I have a new Nexus 5x with stock ROM, after I updated android with May '16 update of Marshmallow 6.0.1.
I tried setting the device to flight mode last night, including Wifi off, to see if the battery level is preserved over night. In the morning I saw that battery level dropped slowly overnight, but what is more interesting is that Wifi was still on.
(I don't know why, I can't find the "attachment" section for this post so I use imgur)
In this screenshot, notice flight-mode icon on top right and wifi green bar on the button
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I found this post from January, but it only says there's graphic bug...
http://forum.xda-developers.com/nexus-5x/help/according-to-battery-screen-wifi-off-t3288437
then I found this thread suggesting a workaround to turn off cell radio manually. When I get to PhoneInfo screen (with the disable phone radio) - it warns me "this might ruin the device radio permanently"
http://forum.xda-developers.com/nexus-5x/help/guide-fix-workaround-airplane-mode-t3381568
Anyone know if Google fixed this issue in a special update?

amnonjw said:
Hello experts,
I have a new Nexus 5x with stock ROM, after I updated android with May '16 update of Marshmallow 6.0.1.
I tried setting the device to flight mode last night, including Wifi off, to see if the battery level is preserved over night. In the morning I saw that battery level dropped slowly overnight, but what is more interesting is that Wifi was still on.
(I don't know why, I can't find the "attachment" section for this post so I use imgur)
In this screenshot, notice flight-mode icon on top right and wifi green bar on the button
I found this post from January, but it only says there's graphic bug...
http://forum.xda-developers.com/nexus-5x/help/according-to-battery-screen-wifi-off-t3288437
then I found this thread suggesting a workaround to turn off cell radio manually. When I get to PhoneInfo screen (with the disable phone radio) - it warns me "this might ruin the device radio permanently"
http://forum.xda-developers.com/nexus-5x/help/guide-fix-workaround-airplane-mode-t3381568
Anyone know if Google fixed this issue in a special update?
Click to expand...
Click to collapse
go to wifi--> options "advanced"--> Scanning always available. Turn it off. If you can'tt find it in wifi, it will be in location setting.

A couple of things... do you have Viber installed? I know it has a setting within it to override the system setting for Wi-Fi sleep policy. Perhaps it's interfering with flight mode too?
Also, in Settings > Location > Scanning (three dot menu) is the Wi-Fi scanning switched on?
It would seem odd if either of these overrides flight mode but worth checking.
Edit - beaten to it on the scanning one...

Thanks for the quick help. I don't have Viber installed.
I will try the WiFi - location turn off soon when I board a flight tonight

On early releases, there is bug in wifi where it won't go into sleep even if you have the setting for Keep WiFi on During Sleep set to never.
On later releases, they fixed that bug, but now when you resume from sleep, it has trouble connecting to WiFi. Probably that has been a problem the whole time, but it was maxed by the WiFi never goes to sleep bug.
Someone said it (the WiFi not reconnecting bug) got fixed in the most recent release, then later on posted the problem is back.
I got tired of the drama and installed WiFi Automatic which controls the WiFi much closer to the usage patterns I desire.

amnonjw said:
Hello experts,
I have a new Nexus 5x with stock ROM, after I updated android with May '16 update of Marshmallow 6.0.1.
I tried setting the device to flight mode last night, including Wifi off, to see if the battery level is preserved over night. In the morning I saw that battery level dropped slowly overnight, but what is more interesting is that Wifi was still on.
(I don't know why, I can't find the "attachment" section for this post so I use imgur)
In this screenshot, notice flight-mode icon on top right and wifi green bar on the button
I found this post from January, but it only says there's graphic bug...
http://forum.xda-developers.com/nexus-5x/help/according-to-battery-screen-wifi-off-t3288437
then I found this thread suggesting a workaround to turn off cell radio manually. When I get to PhoneInfo screen (with the disable phone radio) - it warns me "this might ruin the device radio permanently"
http://forum.xda-developers.com/nexus-5x/help/guide-fix-workaround-airplane-mode-t3381568
Anyone know if Google fixed this issue in a special update?
Click to expand...
Click to collapse
Hey I wrote the Reddit post about turning off the radio manually. Somehow it did work for weeks and then the bug came back, so the workaround either doesn't work or does not work 100%. I'm pretty convinced it's a wifi bug, as mentioned here: https://code.google.com/p/android/issues/detail?id=196120
It does look that some devs are working on it though.

ppaasseeii said:
Hey I wrote the Reddit post about turning off the radio manually. Somehow it did work for weeks and then the bug came back, so the workaround either doesn't work or does not work 100%. I'm pretty convinced it's a wifi bug, as mentioned here: https://code.google.com/p/android/issues/detail?id=196120
It does look that some devs are working on it though.
Click to expand...
Click to collapse
I eventually didn't turn off the radio manually, but I did turn off wifi scanning in the "location" settings. I was abroad for a week with no cellular service so I was on "flight mode" the entire time. At nights I turned off wifi and checked on it in the morning - most of the times the battery graph didn't show wifi was on, but sometime I think it did.
I do hope Google will fix this eventually.

Question Extreme Battery Drain Issue During Phone Idle (Poco F3)

I've been getting really terrible battery drain while my screen is off / during the night since forever and this is one of the worsts.
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These are what I've tried so far:
Reinstalling the latest miui (12.5.2)
Clearing data and cache for the Battery and Performance app
Turning on Battery Saving mode
Many other little settings such as preventing phone from downloading updates at night
Turning off WiFi manually at night.
There has to be a culprit behind this, maybe I can rollback the miui update somehow? Thanks in advance.

Try netguard and limit which apps can access internet while screen is off. Also try running and completing the dexopt job once so it doesnt have to do it every time phone is idle.

friedwater1 said:
I've been getting really terrible battery drain while my screen is off / during the night since forever and this is one of the worsts.
View attachment 5381621
These are what I've tried so far:
Reinstalling the latest miui (12.5.2)
Clearing data and cache for the Battery and Performance app
Turning on Battery Saving mode
Many other little settings such as preventing phone from downloading updates at night
Turning off WiFi manually at night.
There has to be a culprit behind this, maybe I can rollback the miui update somehow? Thanks in advance.
Click to expand...
Click to collapse
learn how to live without those trash apps, google services, social media.... they all constantly use ur phone without permission.

i23u8 said:
Try netguard and limit which apps can access internet while screen is off. Also try running and completing the dexopt job once so it doesnt have to do it every time phone is idle.
Click to expand...
Click to collapse
Thanks I've done it and will see how it goes.

It seems like your Phone isn't fully entering Deep Sleep, could you show entire Battery Usage Statistics? Also do you charge your phone to 80% to save Battery Life or to 100%?

Mine was same. A soft-reset solved the problem. Hold down the power button (when the phone is open) and keep holding it until it restarts. Try a few times if it doesn't solve the problem.

friedwater1 said:
I've been getting really terrible battery drain while my screen is off / during the night since forever and this is one of the worsts.
View attachment 5381621
These are what I've tried so far:
Reinstalling the latest miui (12.5.2)
Clearing data and cache for the Battery and Performance app
Turning on Battery Saving mode
Many other little settings such as preventing phone from downloading updates at night
Turning off WiFi manually at night.
There has to be a culprit behind this, maybe I can rollback the miui update somehow? Thanks in advance.
Click to expand...
Click to collapse
I have a possible solution which worked for me, ping me in telegram I will send you that
Yash
Coca-Cola ❌ | Open-Cola ✅
t.me

Ravuri yaswanth said:
I have a possible solution which worked for me, ping me in telegram I will send you that
Yash
Coca-Cola ❌ | Open-Cola ✅
t.me
Click to expand...
Click to collapse
Thanks for replying such an old thread!
Anyway, it was resolved and the culprit was the SIM card. Not sure if it was a 3g SIM (not my sim, so can't confirm) or that it was faulty, it was sucking a lot of battery which explains why it was fine when I turned on Airplane mode at night.
I hope this helps someone out there.

friedwater1 said:
Thanks for replying such an old thread!
Anyway, it was resolved and the culprit was the SIM card. Not sure if it was a 3g SIM (not my sim, so can't confirm) or that it was faulty, it was sucking a lot of battery which explains why it was fine when I turned on Airplane mode at night.
I hope this helps someone out there.
Click to expand...
Click to collapse
friedwater1 said:
Thanks for replying such an old thread!
Anyway, it was resolved and the culprit was the SIM card. Not sure if it was a 3g SIM (not my sim, so can't confirm) or that it was faulty, it was sucking a lot of battery which explains why it was fine when I turned on Airplane mode at night.
I hope this helps someone out there.
Click to expand...
Click to collapse
friedwater1 said:
Thanks for replying such an old thread!
Anyway, it was resolved and the culprit was the SIM card. Not sure if it was a 3g SIM (not my sim, so can't confirm) or that it was faulty, it was sucking a lot of battery which explains why it was fine when I turned on Airplane mode at night.
I hope this helps someone out there.
Click to expand...
Click to collapse
Did you got any solution? Tell me if you got plzz...