Help Kernel (Android OS) draining battery by keeping phone awake for long periods

[jaydee77ca]

Over the last month or so my battery has been draining at a very high pace. It used to drain at about 1-2% per hour when the phone was not in use. I have GSam and Better Battery Stats and have been doing some investigating but I can't seem to nail down the cause. It seems that the phone is staying awake for about 50% of the time it's not in use which is likely what's contributing to the drain. The problem is that GSam and BBS show that it's Kernel (Android OS) that's keeping it awake which isn't very helpful. I've attached some screenshots with some observations below. The stats are for approx. 2.5 hour period.

1. Battery drained by 15% total (6% per hour)
2. Screen is only on for total of 14 minutes
3. Screen is dark for 13 minutes and dim for 1 minute (so not very bright)
4. Phone sleeps for only 1 hour
5. Phone is awake for 1.5 hours
6. Kernel (Android OS) keeps phone awake for 1 hour
7. wlan_rx_wake is 1 hour (which matches Kernel (Android OS) wake time)
8. CPU is at 702 MHz for 1.25 hours (despite screen off and phone not in use)

Does anyone have any ideas on what's going on and how I can resolve it? I've tried a whack of stuff like turning off location sharing, removing apps that might sync that I don't use, changing sync settings, etc. I can't figure out what the problem is and it's driving me crazy!

Thanks!

 

[Mikestony]

Try turning off WiFi for a while and see if that changes. I base that off of wlan rx results there

 

[Shotgun84]

This thread should be helpful
http://androidforums.com/samsung-galaxy-s3/563008-battery-saving-tip-really-works.html

 

[jaydee77ca]

Wow, I never noticed that in all the cases I had wifi on! I thought it had also happened when just on cellular but looking back through my months of screenshots they are all showing wifi on! Thanks! I've set an IP reservation for the phone on my router now so I'll keep an eye on it and see if it helps!

Much Thanks!

 

[jaydee77ca]

So I set a static IP address in my router and changed my Wifi setup on the phone to be a static IP address but that didn't help.

Not only that, but I paid more attention when not on Wifi and it's happening then also. I've attached a screenshot of a 4.75 hour period with no Wifi on and you can see that the phone was awake for 1.75 hours even though the screen was on for only 16 minutes. Additionally, you can see the CPU was maxed out at 1.5 GHz for 30 minutes and was at it's minimum of 384 MHz for almost 1.5 hours which confirms that the phone was in fact not sleeping for 1.75 hours. During that 4 hours it lost 25% battery which is more than 6% per hour. Before, it used to only use 1-2% per hour when not in use so this is way higher.

Any other ideas?

Thanks!

 

[Mikestony]

hmmmm, in BetterBatteryStats, what comes up when you select "Partial Wakelocks/Unplugged/Current"?

 

[jaydee77ca]

hmmmm, in BetterBatteryStats, what comes up when you select "Partial Wakelocks/Unplugged/Current"?

I must have not taken a screenshot of those from that time on 4G but attached are a couple from a recent time on Wifi.

The next time it happens on 4G I'll be sure to grab a shot of that screen also.

 

[javamann]

This might not be the case, but I found the battery draining when at home in a weak WiFi area. The phone was continually searching for a signal. I wasn't using a router and installing one solved my problem. Is it possible that ur having a similar problem but need a different solution?

JM

 

[CDPlant]

Do you have Google Now turned on? If so try turning off location reporting in Google maps and see if it helps, it's made a huge difference on mine

From your most recent screenshot it looks like maps is using a fair bit of battery

 

[jaydee77ca]

Do you have Google Now turned on? If so try turning off location reporting in Google maps and see if it helps, it's made a huge difference on mine

From your most recent screenshot it looks like maps is using a fair bit of battery

I disabled location reporting but that didn't change anything. The problem is still there. Here are some more screenshots with location sharing disabled.

 

[jaydee77ca]

This doesn't seem right or good either. It happens pretty much every drive home. The processor is pinned or highly used and the battery temperature is almost 43 degrees celcius! All it's doing is charging and playing music. It never gets that hot when I charge it on my dock at home. The only difference would be that on the way home I play music through Bluetooth using DoubleTwist. But I also do that at the gym on my headphones and it doesn't get hot then (though it's not charging).

 

[Mikestony]

I don't think that is out of the ordinary....I had to convert that to degrees F.---110.

 

[nsx82]

I don't think that is out of the ordinary....I had to convert that to degrees F.---110.

Hi

I almost sure the battery drain comes from the google apps. I also noticed the same behaviour on different devices (different roms) the only common on the devices is the google apps that actually updating itself without our questions... So i think who using the latest google apps must have the same behaviour. Less visible if someone keep the screen on...
I already tried to switch off everything on google apps and not really helps.. In my case the same thing happens on galaxy s3 with aokp mod and a Nexus 7 with another aokp mod. Before android os processes was always between 2-5% on a full battery discharge... this all changed one or two weeks before.... (i think kinda google app update) Maybe if I log out my google profile that helps, but i cant do that...

For sure: Google Currents takes a lot of battery...

 

[Droidnovice1982]

LG G2 running stock 4.4.2 Kitkat

Hi,

Probably too late to offer any help here as was 6 months ago, however I have recently moved from iphone back to Android getting the LG G2(amazing phone!) and was having the exact problem of quick battery drain, with Android system account for 50-60% battery usage when checking battery stats and losing 4-6% battery per hour with the phone screen off and quicker drain when screen on. Being an old android user I knew something was amiss.

Follow your recommendations on this thread I installed GSam and found Android Kernal was accounting for 60% battery drain. After a bit of digging around on forums Google is indicated to possibly to be the culprit. Therefore I went to google settings via the app and done the following;

Connected apps > disconnected all apps bar mail. This seems to have no negative effects
Location > Turn OFF location reporting. Google play service + low battery use (not sure what this is)
Search and Now > Google now turned OFF, Phone search = no change,
Search and Now > voice> OK Google hotword detection > Turn off (think the phone is always listening for a voice command.

Since doing this last night I can report;
7hrs of phone sleep/standby and only 1-2% battery drain total
8hrs moderate use today and I'm on 71% remaining (massive increase before the changes. That includes out in the fields in low signal areas (I'm a farmer).
Sorry for the essey, hope this helps someone

Android kernel and android system still seem to be high up on usage stats but drain is soooo much slower. It may well be this is just something that is the norm for kitkat, but losing just 31% in 8 hours will about do me

 

[egoldy]

Very interesting post.

I'm having very similar problems. Watched a 100% charge drop to 35% over 7 hours (overnight) and no idea what's causing it.

Everything in GS pointing to Kernel and Android.

I just turned off all the things you mentioned and I'll have to see what happens.

In the meantime, If anyone can make sense of the following, here is the export from Kernel and Android. Not sure if there are other things I can do as well.

GSam Labs - Battery Monitor - Export Data

Android System

May 13, 2014 6:45:24 AM

Usage Details

CPU Usage:1h 26m 21s
App UID:1000

Wakelock Detail

Included Packages

SilentLogging
Security policy updates
AllShare Cast Dongle S/W Update
com.qualcomm.atfwd
WallpaperPicker
SecurityManagerService
Assistant menu
com.sec.android.app.wfdbroker
com.sec.bcservice
Samsung WatchON
TcpdumpService
PopupuiReceiver
BluetoothTest
Factory Mode
Samsung keyboard
DeviceTest
Input Devices
EasyOneHand
Bridge
Application installer
ANT HAL Service
Camera test
AT&T Software update
Samsung text-to-speech engine
EmergencyManagerService
MDMApp
SysScope
Easy settings
SetDefaultLauncher
Android System
Voice Recorder
Settings
Service mode
Beaming Service
LocationServices
Filter Installer
OM Customize
Fingerprints
MTP application
Samsung setup wizard
Enterprise Sim Pin Service
Quick Connect Interaction Service
Mobile tracker
Security storage
Perso
HwModuleTest
DeviceKeystring
GestureService
Key Chain
TetheringAutomation
NFC Test
RilNotifier
Launcher
Color adjustment
Remote Controls
Screen Mirroring
WlanTest
KNOX
Fused Location
Settings storage
DSMLawmo
IPsec Service
USB settings
Personal Page Service
Knox Notification Manager
USBSettings
wssyncmlnps

Included Processes

servicemanager
rfs_access
edmaudit
smdexe
surfaceflinger
sensorhubservic
drsd
qrngd
Binder_2
qseecomd
cnd
ATFWD-daemon
time_daemon
vcsFPService
cs
secure_storage_
system_server
tlc_server
bugreport
erprint.service
.knox.seandroid
ndroid.settings
com.samsung.SMT
sec.android.omc
.android.app.mt
.SecSetupWizard
.modem.settings
.tcpdumpservice
.sec.pcw.device
popupuireceiver
top
com.sec.factory
.MtpApplication
com.policydm
com.ws.dm
com.wssnps
.sec.dsm.system
.barcodeService
d.service.bezel
roid.service.sm
.qualcomm.atfwd
c.watchon.phone
ss_conn_daemon
d.app.voicenote
p.assistantmenu
ddexe
connfwexe
npsmobex
imsqmidaemon
mcDriverDaemon
ssr_diag
mldaemon
sh
ec.android.Kies
roid.app.parser




GSam Labs - Battery Monitor - Export Data

Kernel (Android OS)

May 13, 2014 6:44:47 AM

Usage Details

CPU Usage:2h 3m 13s
App UID:0

Wakelock Detail

Included Packages

Included Processes

init
kthreadd
ksoftirqd/0
kworker/u:0
kworker/u:0H
kworker/0:1
kworker/0:1H
kworker/u:1H
system
kswapd0
kworker/0:2
irq/633-synapti
irq/253-msm_sdc
irq/655-SSP_Int
kworker/u:3
mmcqd/0
w1_bus_master1
boost_sync/0
boost_sync/1
boost_sync/2
boost_sync/3
kworker/u:4
ueventd
mmcqd/2
jbd2/mmcblk0p25
kworker/u:5
ngd_msm_ctrl_ng
healthd
vold
netd
debuggerd
zygote
thermal-engine
pkgld
flush-179:0
kworker/u:8
dhd_watchdog_th
dhd_dpc
mdss_fb0
loop0
loop2
loop5
loop7
loop12
irq/33-cpubw_hw
kworker/0:0
mpdecision
ksoftirqd/3
kworker/3:0H
ksoftirqd/2
ksoftirqd/1
kworker/2:0H
kworker/1:0H
kworker/1:1
kworker/3:1
kworker/2:1
dhd_rxf
cfinteractive
kauditd
loop4
loop6
wl_event_handle
kworker/0:2H
kworker/1:1H
kworker/u:1
kworker/u:2
kworker/3:2
loop10
kworker/3:1H
kworker/3:0
sync_supers
bdi-default
irq/170-msm_sdc
irq/256-msm_sdc
loop3
khubd
loop1
loop8
loop9
loop11
kworker/0:0H
irq/631-cypress
kworker/u:6
irq/288-wcd9xxx
kworker/u:2H
flush-179:64
kworker/u:7
kworker/2:1H
jbd2/mmcblk0p24
ecryptfs-kthrea
file-storage
jbd2/mmcblk0p23
jbd2/mmcblk0p21
jbd2/mmcblk0p12
jbd2/mmcblk0p22
mmcqd/0rpmb
ssp_sensorhub_t
kworker/0:3
irq/305-max7780
rpro.widgetpack
kworker/3:2H
kblockd
kworker/2:0
kworker/1:0
ndroid.app.memo
fsnotify_mark
kcryptd
com.att.connect

 

[nav2012]

Similar issues for the last 1 week on my 1 year 8 month old SG3. Was thinking of ordering a new Anker brand battery as Samsung products don't last long. My wife's 3.5 year old iPhone 4 still has amazing battery life. When I upgraded to SG4, I gave her my SG3 and the way the battery is draining (10% in an hour) without any use, she is hating it. I have been trying to convert her to Android and all the openness that comes with it, but this is making it harder.

I have installed GSam and BetterBatteryStats, lets see what it shows. Was using Battery Doctor so far and did not quite understand what it was doing.

I turned off location setting, but then you cannot use Google Maps, so had to turn that back ON. Google Now was already Off, but still went and remove the Ok Google voice option.

Charging back the phone to 100% and will observe.

Is it not a good idea to have both GSam and BetterBatteryStats running at the same time ?

 

[Droidnovice1982]

How have you both been getting on?

With my LG G2 I now use Google Now, I quite like its functionality but continue to have voice and location reporting etc off and regularly get about 20hrs of battery life with heavy use in the evenings so am very happy.

 

[mak916]

Very interesting post.

I'm having very similar problems. Watched a 100% charge drop to 35% over 7 hours (overnight) and no idea what's causing it.

Everything in GS pointing to Kernel and Android.

I just turned off all the things you mentioned and I'll have to see what happens.

In the meantime, If anyone can make sense of the following, here is the export from Kernel and Android. Not sure if there are other things I can do as well.

GSam Labs - Battery Monitor - Export Data

Android System

May 13, 2014 6:45:24 AM

Usage Details

CPU Usage:1h 26m 21s
App UID:1000

Wakelock Detail

Included Packages

SilentLogging
Security policy updates
AllShare Cast Dongle S/W Update
com.qualcomm.atfwd
WallpaperPicker
SecurityManagerService
Assistant menu
com.sec.android.app.wfdbroker
com.sec.bcservice
Samsung WatchON
TcpdumpService
PopupuiReceiver
BluetoothTest
Factory Mode
Samsung keyboard
DeviceTest
Input Devices
EasyOneHand
Bridge
Application installer
ANT HAL Service
Camera test
AT&T Software update
Samsung text-to-speech engine
EmergencyManagerService
MDMApp
SysScope
Easy settings
SetDefaultLauncher
Android System
Voice Recorder
Settings
Service mode
Beaming Service
LocationServices
Filter Installer
OM Customize
Fingerprints
MTP application
Samsung setup wizard
Enterprise Sim Pin Service
Quick Connect Interaction Service
Mobile tracker
Security storage
Perso
HwModuleTest
DeviceKeystring
GestureService
Key Chain
TetheringAutomation
NFC Test
RilNotifier
Launcher
Color adjustment
Remote Controls
Screen Mirroring
WlanTest
KNOX
Fused Location
Settings storage
DSMLawmo
IPsec Service
USB settings
Personal Page Service
Knox Notification Manager
USBSettings
wssyncmlnps

Included Processes

servicemanager
rfs_access
edmaudit
smdexe
surfaceflinger
sensorhubservic
drsd
qrngd
Binder_2
qseecomd
cnd
ATFWD-daemon
time_daemon
vcsFPService
cs
secure_storage_
system_server
tlc_server
bugreport
erprint.service
.knox.seandroid
ndroid.settings
com.samsung.SMT
sec.android.omc
.android.app.mt
.SecSetupWizard
.modem.settings
.tcpdumpservice
.sec.pcw.device
popupuireceiver
top
com.sec.factory
.MtpApplication
com.policydm
com.ws.dm
com.wssnps
.sec.dsm.system
.barcodeService
d.service.bezel
roid.service.sm
.qualcomm.atfwd
c.watchon.phone
ss_conn_daemon
d.app.voicenote
p.assistantmenu
ddexe
connfwexe
npsmobex
imsqmidaemon
mcDriverDaemon
ssr_diag
mldaemon
sh
ec.android.Kies
roid.app.parser




GSam Labs - Battery Monitor - Export Data

Kernel (Android OS)

May 13, 2014 6:44:47 AM

Usage Details

CPU Usage:2h 3m 13s
App UID:0

Wakelock Detail

Included Packages

Included Processes

init
kthreadd
ksoftirqd/0
kworker/u:0
kworker/u:0H
kworker/0:1
kworker/0:1H
kworker/u:1H
system
kswapd0
kworker/0:2
irq/633-synapti
irq/253-msm_sdc
irq/655-SSP_Int
kworker/u:3
mmcqd/0
w1_bus_master1
boost_sync/0
boost_sync/1
boost_sync/2
boost_sync/3
kworker/u:4
ueventd
mmcqd/2
jbd2/mmcblk0p25
kworker/u:5
ngd_msm_ctrl_ng
healthd
vold
netd
debuggerd
zygote
thermal-engine
pkgld
flush-179:0
kworker/u:8
dhd_watchdog_th
dhd_dpc
mdss_fb0
loop0
loop2
loop5
loop7
loop12
irq/33-cpubw_hw
kworker/0:0
mpdecision
ksoftirqd/3
kworker/3:0H
ksoftirqd/2
ksoftirqd/1
kworker/2:0H
kworker/1:0H
kworker/1:1
kworker/3:1
kworker/2:1
dhd_rxf
cfinteractive
kauditd
loop4
loop6
wl_event_handle
kworker/0:2H
kworker/1:1H
kworker/u:1
kworker/u:2
kworker/3:2
loop10
kworker/3:1H
kworker/3:0
sync_supers
bdi-default
irq/170-msm_sdc
irq/256-msm_sdc
loop3
khubd
loop1
loop8
loop9
loop11
kworker/0:0H
irq/631-cypress
kworker/u:6
irq/288-wcd9xxx
kworker/u:2H
flush-179:64
kworker/u:7
kworker/2:1H
jbd2/mmcblk0p24
ecryptfs-kthrea
file-storage
jbd2/mmcblk0p23
jbd2/mmcblk0p21
jbd2/mmcblk0p12
jbd2/mmcblk0p22
mmcqd/0rpmb
ssp_sensorhub_t
kworker/0:3
irq/305-max7780
rpro.widgetpack
kworker/3:2H
kblockd
kworker/2:0
kworker/1:0
ndroid.app.memo
fsnotify_mark
kcryptd
com.att.connect

your list looks like mine. I have no idea on how to read it.

 

[yasabes_diego]

LG G2 running stock 4.4.2 Kitkat

Connected apps > disconnected all apps bar mail. This seems to have no negative effects
Location > Turn OFF location reporting. Google play service + low battery use (not sure what this is)
Search and Now > Google now turned OFF, Phone search = no change,
Search and Now > voice> OK Google hotword detection > Turn off (think the phone is always listening for a voice command.

Yes, yes, yes! It's working for me! I guess it was FourSquare connected to Google (because it was in the list and it is the last app i added to my phone)

EDIT: I take this back. The battery drainage comes and goes, and it's happening even after a factory reset with barely no apps installed (10% per hour). I hate android and google.

 

[icooldude007]

Hi,

I also have the same issue with my Micromax Canvas A1. Initially the battery seems to be awesome as it was draining 2% overnight(around 8 hours) but suddenly something went wrong and now it is draining 7-8% in an hour in idle mode. According to GSAM Battery Monitor, Kernel(Android OS) is consuming most of the battery. I don't get it that why it is happening suddenly. I also tried the solutions given in this post but it didn't help. Please help me if anyone has find any solution to this problem.

 

[javamann]

I hate responding when I don't have a really good solution, but I just don't like fooling around with the phone and worrying about these little problems. I just have lots of chargers hanging about the house as well as one in the car and just charge as needed. I even went a step further and purchased an extended battery from Amazon and now am really inured to these charging problems. Not really a solution; more of a workaround!

JM

 

[jaymzway]

This doesn't seem right or good either. It happens pretty much every drive home. The processor is pinned or highly used and the battery temperature is almost 43 degrees celcius! All it's doing is charging and playing music. It never gets that hot when I charge it on my dock at home. The only difference would be that on the way home I play music through Bluetooth using DoubleTwist. But I also do that at the gym on my headphones and it doesn't get hot then (though it's not charging).

sounds to me your using a universal car charger though it will fit your phone don't mean that the voltage output is the same to the phone

if you have confused your car charger with your wife's or husbands car charger
this could happen and it is taking in an over charge thus forth getting to hot

this may explain why your getting hot battery in car and not at home docking...

some phones require 3.6 -4.5 some maybe higher volts might want to check that . not saying anyone else is wrong all great points just thought to add mine in.. no biggy! thank you everyone... just trying to help... cause these green horns are getting heavy lmaooo

 

[Mag85]

Very interesting post.

I'm having very similar problems. Watched a 100% charge drop to 35% over 7 hours (overnight) and no idea what's causing it.

Everything in GS pointing to Kernel and Android.

I just turned off all the things you mentioned and I'll have to see what happens.

In the meantime, If anyone can make sense of the following, here is the export from Kernel and Android. Not sure if there are other things I can do as well.

GSam Labs - Battery Monitor - Export Data

Android System

May 13, 2014 6:45:24 AM

Usage Details

CPU Usage:1h 26m 21s
App UID:1000

Wakelock Detail

Included Packages

SilentLogging
Security policy updates
AllShare Cast Dongle S/W Update
com.qualcomm.atfwd
WallpaperPicker
SecurityManagerService
Assistant menu
com.sec.android.app.wfdbroker
com.sec.bcservice
Samsung WatchON
TcpdumpService
PopupuiReceiver
BluetoothTest
Factory Mode
Samsung keyboard
DeviceTest
Input Devices
EasyOneHand
Bridge
Application installer
ANT HAL Service
Camera test
AT&T Software update
Samsung text-to-speech engine
EmergencyManagerService
MDMApp
SysScope
Easy settings
SetDefaultLauncher
Android System
Voice Recorder
Settings
Service mode
Beaming Service
LocationServices
Filter Installer
OM Customize
Fingerprints
MTP application
Samsung setup wizard
Enterprise Sim Pin Service
Quick Connect Interaction Service
Mobile tracker
Security storage
Perso
HwModuleTest
DeviceKeystring
GestureService
Key Chain
TetheringAutomation
NFC Test
RilNotifier
Launcher
Color adjustment
Remote Controls
Screen Mirroring
WlanTest
KNOX
Fused Location
Settings storage
DSMLawmo
IPsec Service
USB settings
Personal Page Service
Knox Notification Manager
USBSettings
wssyncmlnps

Included Processes

servicemanager
rfs_access
edmaudit
smdexe
surfaceflinger
sensorhubservic
drsd
qrngd
Binder_2
qseecomd
cnd
ATFWD-daemon
time_daemon
vcsFPService
cs
secure_storage_
system_server
tlc_server
bugreport
erprint.service
.knox.seandroid
ndroid.settings
com.samsung.SMT
sec.android.omc
.android.app.mt
.SecSetupWizard
.modem.settings
.tcpdumpservice
.sec.pcw.device
popupuireceiver
top
com.sec.factory
.MtpApplication
com.policydm
com.ws.dm
com.wssnps
.sec.dsm.system
.barcodeService
d.service.bezel
roid.service.sm
.qualcomm.atfwd
c.watchon.phone
ss_conn_daemon
d.app.voicenote
p.assistantmenu
ddexe
connfwexe
npsmobex
imsqmidaemon
mcDriverDaemon
ssr_diag
mldaemon
sh
ec.android.Kies
roid.app.parser




GSam Labs - Battery Monitor - Export Data

Kernel (Android OS)

May 13, 2014 6:44:47 AM

Usage Details

CPU Usage:2h 3m 13s
App UID:0

Wakelock Detail

Included Packages

Included Processes

init
kthreadd
ksoftirqd/0
kworker/u:0
kworker/u:0H
kworker/0:1
kworker/0:1H
kworker/u:1H
system
kswapd0
kworker/0:2
irq/633-synapti
irq/253-msm_sdc
irq/655-SSP_Int
kworker/u:3
mmcqd/0
w1_bus_master1
boost_sync/0
boost_sync/1
boost_sync/2
boost_sync/3
kworker/u:4
ueventd
mmcqd/2
jbd2/mmcblk0p25
kworker/u:5
ngd_msm_ctrl_ng
healthd
vold
netd
debuggerd
zygote
thermal-engine
pkgld
flush-179:0
kworker/u:8
dhd_watchdog_th
dhd_dpc
mdss_fb0
loop0
loop2
loop5
loop7
loop12
irq/33-cpubw_hw
kworker/0:0
mpdecision
ksoftirqd/3
kworker/3:0H
ksoftirqd/2
ksoftirqd/1
kworker/2:0H
kworker/1:0H
kworker/1:1
kworker/3:1
kworker/2:1
dhd_rxf
cfinteractive
kauditd
loop4
loop6
wl_event_handle
kworker/0:2H
kworker/1:1H
kworker/u:1
kworker/u:2
kworker/3:2
loop10
kworker/3:1H
kworker/3:0
sync_supers
bdi-default
irq/170-msm_sdc
irq/256-msm_sdc
loop3
khubd
loop1
loop8
loop9
loop11
kworker/0:0H
irq/631-cypress
kworker/u:6
irq/288-wcd9xxx
kworker/u:2H
flush-179:64
kworker/u:7
kworker/2:1H
jbd2/mmcblk0p24
ecryptfs-kthrea
file-storage
jbd2/mmcblk0p23
jbd2/mmcblk0p21
jbd2/mmcblk0p12
jbd2/mmcblk0p22
mmcqd/0rpmb
ssp_sensorhub_t
kworker/0:3
irq/305-max7780
rpro.widgetpack
kworker/3:2H
kblockd
kworker/2:0
kworker/1:0
ndroid.app.memo
fsnotify_mark
kcryptd
com.att.connect

It looks to me like someone is tracking you they put up some kind of sync on your phone. But what I do is each thing I don't recognize I will put it in Google and ask what it does. A lot of tracking apps will disguise itself as a system requirement. And that goes for everybody has batteries draining for no reason very possible there is some kind of spyware malware or tracking device

 

[Mag85]

Over the last month or so my battery has been draining at a very high pace. It used to drain at about 1-2% per hour when the phone was not in use. I have GSam and Better Battery Stats and have been doing some investigating but I can't seem to nail down the cause. It seems that the phone is staying awake for about 50% of the time it's not in use which is likely what's contributing to the drain. The problem is that GSam and BBS show that it's Kernel (Android OS) that's keeping it awake which isn't very helpful. I've attached some screenshots with some observations below. The stats are for approx. 2.5 hour period.

1. Battery drained by 15% total (6% per hour)
2. Screen is only on for total of 14 minutes
3. Screen is dark for 13 minutes and dim for 1 minute (so not very bright)
4. Phone sleeps for only 1 hour
5. Phone is awake for 1.5 hours
6. Kernel (Android OS) keeps phone awake for 1 hour
7. wlan_rx_wake is 1 hour (which matches Kernel (Android OS) wake time)
8. CPU is at 702 MHz for 1.25 hours (despite screen off and phone not in use)

Does anyone have any ideas on what's going on and how I can resolve it? I've tried a whack of stuff like turning off location sharing, removing apps that might sync that I don't use, changing sync settings, etc. I can't figure out what the problem is and it's driving me crazy!

Thanks!

Have you run a scan for malware or spyware?
Do you recognize all of the systems or apps that keep your phone awake? You should try asking Google what each one does. A lot of times tracker apps will disguise themselves as system requirements. Anyway I seem to have had a similar problem and somebody was syncing my phone using the logger. I know some things to look for our SMS tracker, dailymotion, I might be in your best interest to look into what types of apps people use for tracking and how they appear in the applications menu.

 

[MLSS]

Just download a wake lock detector and let your phone sit for a while and you will see what apps are waking your phone and how long....