Hello, i have a problem with my Nexus 10....The tablet is displaying 5 minutes of screen on time while i done 20 minutes...after i unplug the tablet, the statistics are displayed correctly but as soon i do it off, it start to display wrong information about times....what i should do? I have already reset the tablet and i am on stock locked and unrooted with 4.4.4 version....also i had battery drain problems that should been fixed (for now) from a restart....now the battery drain is normal but the statistics about the time usage are totally wrong
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Hello,
I am asking this question as to confirm if my tablet needs to be sent to warranty or this is a normal behavior to you other people reading this post.
I have stock 4.2.1 rooted on a nexus 7 16gb version
When I lock the screen the device enters deep sleep => I can verify this by using CPU Spy, it says that in 30min of screen off, 28 minutes were spent in deep sleep
Using Battery monitor widget with refresh rate at 1min I can look at the log and see that the tablet had a constant drain of 50 to 94 mah during those 30 minutes. Only after 2-3 hours the device starts to have a drain of 2-3 mah (if the screen is off)
Wireless, Bluetooth, Gps are turned off.
If you think I may have omitted some things in my test procedure please share some info, otherwise please tell me if you also encounter this problem
A good day !
background apps could cause drain, not even apps you opened. like the facebook app is notorious for it.
simms22 said:
background apps could cause drain, not even apps you opened. like the facebook app is notorious for it.
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Click to collapse
Hmm, normally when I had the HTC HD2 when it was in deep sleep it had a drain of 2-3mah - battery monitor widget was checking every 1min
Now with the Nexus 7 the drain is 50-94 in deep sleep, do you think this would be a normal behavior ?
I can relate
I get the same type of behavior on my Nexus 7 16GB wifi only model. Mine does not seem to be due to an app either, as the main battery use is Google related (Play store, or Google services, etc.). Take today for example. I charged my Nexus 7 overnight, verified that it was reporting fully charged when I got up, then I put it to sleep and set it aside to take to work and didn't use it again. When I got to work 2.5 hours later I turned it on and it was at about 83% battery. I lost almost 20% battery in 2.5 hours without even using the tablet. I attached a screenshot - today's culprit was Android OS (I took the screenshot a couple of hours later at work). This behavior started after upgrading to 4.2 - it never did this on 4.1.
Oddly enough, I don't get this type of drain if there's no wifi connection, even if wifi is left on and there's a wifi signal that it's just not connected to. When I get someplace with wifi, the battery drain starts again.
See the attached picture, this battery drain happens every day and takes up more then the screen so I'll finish the day with 1.5 to 2 hours SOT while over 50 percent is sucked up by the OS. Any fixes?
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How do I fix this
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This happens sometimes and seems to be triggered by the Location service (even with GPS off - but with wifi/data location on). It seems sometimes the phone is kept on a wake lock state which doesnt allow it to properly enter sleep mode.
When it happens, try rebooting your phone. That fixes it for me. It happens sometimes (about 1x every 2 weeks), and the reboot always fixes it.
Hi Guys, I need your help to understand if anyone of you encountered the problem that I am facing now.
My phone battery is jumping up and down while discharging and charging.
I have even changed the battery but still the same situation.
Any insight will be helpful.
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You are using the original charger. Don't use it.
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Same issue here
I have the same issue.
Scenario 1:
Phone charging
reboot
battery jumps up by at least 5 - 10 %
Scenario 2:
Phone discharging
reboot
battery jumps down by 5%
Scenario 3:
Phone discharging
no reboots
battery stays at 1% for a very long time at the end of the day.
If there are no reboots involved then I would see sharp drops in the battery graph at the end of the day.
I looked into this issue and found out the battery circuit might be build poorly by LG for nexus 4.
I overcame this drain issue by:
- not looking at the graph often
- Installed custom kernel that allowed me to under clock to save battery.
If you are non-root then i would suggest letting the battery drain to the point where the phone turns off.
Then go to fastboot and let the phone drain more battery by leaving the screen ON. ( going to fastboot: 1) turn off the phone 2) press and hold the power and volume down button).
Phone shuts down within minutes of taking off charge. Looses network every time before shutting down.
Doesn't boot up or boots and immediately shuts down. Battery charge shown in recovery and upon booting differ.
Battery calibration, safe mode does not help. Also disabled smart wifi settings, as suggested in many threads, to no avail.
Running stock 4.4.2, rooted, bootloader unlocked.
Works perfectly fine when plugged in.
kd19 said:
Phone shuts down within minutes of taking off charge. Looses network every time before shutting down.
Doesn't boot up or boots and immediately shuts down. Battery charge shown in recovery and upon booting differ.
Battery calibration, safe mode does not help. Also disabled smart wifi settings, as suggested in many threads, to no avail.
Running stock 4.4.2, rooted, bootloader unlocked.
Works perfectly fine when plugged in.
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How old is the battery, how many charging cycles did it have? Have you tried flashing the stock rom again (4.3 or 4.4)?
For instance, search for battery replacement on aliexpress.com.
The phone is around a year old. Battery stats show it's in good health.
I need to confirm it's a battery problem before replacing it. What about the signal dropping?
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Update: Also flashed to stock 4.4. Still the same issue. In fact, the problem is persistent across multiple roms; AOKP, CM, PA, MIUI, stock...
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It's most likely the battery, try to replace it with genuine one.
I too think so. Just looking for someone who's faced similar issues and what worked for them.
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I am using Note 4 (N910C) bought new 4 months ago but some times device behave weird. Sometimes device stays awake (cpu stays active) while screen is off and the device is not being used. When this state happen in the battery stats it can be seen that the awake line becomes strong and permanent and only solution is to restart the device.
After restart, device behaves normal for about 2 to 3 days and after that same problem persist. During this situation 4% per hour battery is consumed when device is idle.
In battery stats Android System and Android OS consume most of the battery when this problem happens. Otherwise device consume normal battery and I get about 6 hrs of screen on time.
I have tried several solutions like
Cleared cache.
Disabled some pre installed apps which i don't use like svoice etc
Disable sync services
Installed Gsam battery monitor but no-special process found other than android aystem which consume battery in problem state.
But nothing mentioned above really helped. The only known solution is restarting the device which help for like 2 days and problem comes again.
Device is not rooted and I am using original Samsung OS. Lollipop 5.1.1 and Marshmallow 6.0.1 both have same problem the later was updated via OTA. But nothing addressed the problem.
Please guide with the possible soultion?
I have the exact same problem, would be great if somebody can help
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I also have the same problem, i'm going to search deeper in the forums if someone solved this months ago
So far it ends up wasting the battery of a generally idle device and stays up long enough for my screen and body to heat up when left unattended.
Have you already fiddled with the screen settings itself? Particularly Settings>Device>Display and Wallpaper > Smart Stay? I turned mine off and it did reduce some of the battery drain issues.
WiFi and mobile data (even just the plain mobile signal) seems to drain the battery too a little quickly.