[Q] How to reduce "Knock On" battery drain? - G2 Q&A, Help & Troubleshooting

Does anybody have any tips for this?

vPro97 said:
Does anybody have any tips for this?
Click to expand...
Click to collapse
Turn it off. lol

vPro97 said:
Does anybody have any tips for this?
Click to expand...
Click to collapse
i turned it off to avoid drain

Haha thanks guys but in fact I was searching for some mod
Sent from my LG-D802 using xda app-developers app

how can have battery drain with knock on?

emprize said:
how can have battery drain with knock on?
Click to expand...
Click to collapse
Knock on basically makes the sensors in the phone constantly active - ready for you to knock knock. This drains battery.

vPro97 said:
Knock on basically makes the sensors in the phone constantly active - ready for you to knock knock. This drains battery.
Click to expand...
Click to collapse
not for our phone mate, snapdragon 800 has microprocessor to control sensors when the device is in deep sleep, so the device can still response for sensor while deep sleep for quad core cpu, and thats why u cant find any way to reduce the battery drain, because it is basically zero battery drain for knock on, u can install apps like battery monitor widget to monitor about the battery usage

Related

Did you know... (bln)

Did you know that with regards to BLN, it actually drains battery by an noticeable amount. I switched to speedmod (w/o BLN) and seem to get much better battery life. Previously I was trying various kernel to determine the issue with the higher than average (the standard being custom roms) battery drain. This might be helpful to you guys.
Yes it does, with the current implementation it does not prevent the phone from going back to sleep state unlike how it was done on the S1.
EarlZ said:
Yes it does, with the current implementation it does not prevent the phone from going back to sleep state unlike how it was done on the S1.
Click to expand...
Click to collapse
Yeap, it is because of the wakelock issues. I've tried setting a time-out for the BLN which is suppose to help return the device to deepsleep but seems like it doesn't work.
I have noticed this as well. Can anyone confirm whether or not simply uninstalling the app will resolve the issue, or would I have to flash a different kernel that doesn't support bln at all to resolve the battery usage issue?
Uninstalling the app, and not using bln will stop the battery drain.
Sent from my GT-I9100 using xda premium
veyka said:
Uninstalling the app, and not using bln will stop the battery drain.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Hope this is true, cause I don't use BLN although the kernel i use has it included.
Sent from my GT-I9100
compuw22c said:
I have noticed this as well. Can anyone confirm whether or not simply uninstalling the app will resolve the issue, or would I have to flash a different kernel that doesn't support bln at all to resolve the battery usage issue?
Click to expand...
Click to collapse
Yes. Try uninstaller BLN control app. See if that helps. If your battery does not improve by a noticeable amount, I think your best bet would be to try to flash another kernel such as speedmod.
Yup, hate BLN myself actually its a massive battery drainer. Never use it, dont really see a point to it either as for me the phone is in my pocket most of the day.
NoLEd have any issue like BLN? Seems like they are the best 'led notifier'.
Edwrib said:
NoLEd have any issue like BLN? Seems like they are the best 'led notifier'.
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Click to collapse
When NoLed is on, your phone is not in deep sleep. So yes it drains your battery.
what is BLN?
Edwrib said:
NoLEd have any issue like BLN? Seems like they are the best 'led notifier'.
Click to expand...
Click to collapse
Same thing, also drains.
daz_2000 said:
what is BLN?
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Click to collapse
http://www.google.com/cse?q=bln&sa=Search&cx=partner-pub-2900107662879704%3Afs7umqefhnf&ie=ISO-8859-1
Edwrib said:
NoLEd have any issue like BLN? Seems like they are the best 'led notifier'.
Click to expand...
Click to collapse
noled is even worst as its keeping bits of the screen powered on.
Lennyz1988 said:
When NoLed is on, your phone is not in deep sleep. So yes it drains your battery.
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Click to collapse
Pfeffernuss said:
Same thing, also drains.
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Click to collapse
veyka said:
noled is even worst as its keeping bits of the screen powered on.
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Click to collapse
But in stand by, without notification on, BLN still eating and NoLed not? You can configure a timeout to NoLed auto dismiss...
Edwrib said:
But in stand by, without notification on, BLN still eating and NoLed not? You can configure a timeout to NoLed auto dismiss...
Click to expand...
Click to collapse
Bln only drains the battery when it is active (it keeps it out of deep sleep)
you can see this by pressing the home button and the phone instantly wakes up, when the phone is in deep sleep there is a "delay" when you wake it up...
This is why bln for the sgs2 it is highly suggested you get the pro bln app so you can schedule it to time out so the phone can go back into deep sleep (if you never clear the notification)
If you have the free version then it will keep the phone awake until you clear the notification
If you have a kernel that is bln compatible and don't want to use it...then either disable it in the app or unistall the bln app.
the bln functions won't work wiithout the app.

[Q] Bad battery life

hi everyone
i have recently got my n4, had it on stock for a few days and battery life was fine then flashed Paranoid Android and the battery life was even better, the one day the battery life randomly was just terrible so i flash back to stock 4.3 and it has not improve, getting about 1 hour screen on time
any help will be much appreciated
Is the percentage dropping rapidly? And do you have all the features active like GPS, WiFi, BT, max brightness, etc?
Sent from my SGH-T959 using xda app-developers app
Ace42 said:
Is the percentage dropping rapidly? And do you have all the features active like GPS, WiFi, BT, max brightness, etc?
Sent from my SGH-T959 using xda app-developers app
Click to expand...
Click to collapse
yes i drops like 10% in 10 minutes, i have auto brightness on and wifi and bt off but gps on.
peteyboy24 said:
yes i drops like 10% in 10 minutes, i have auto brightness on and wifi and bt off but gps on.
Click to expand...
Click to collapse
Try going to 4.2.2 and see if that helps.
If your still having the issue, it's probably something wrong with your hardware (battery).
binaryfalcon said:
Try going to 4.2.2 and see if that helps.
If your still having the issue, it's probably something wrong with your hardware (battery).
Click to expand...
Click to collapse
Thanks for the reply, I was hoping not to do that, I have flashed slim ROM now, see if this helps, do you think it could be because I stream music from cool Google play music ?
Usually bad battery (especially when it happens out of nowhere) is due to an app causing drain. There are apps that tell you what's eating battery (including the built in meter), the best of which is Better Battery Stats, which you can get for free from the XDA thread.
Sent from an N4 blessed with AOKP and sanctified by Faux123!
yup, majority of the time its an app(s). battery life mostly has to do with your setup, the apps that you chose to install, things that check for notifications in the background, and the way that you use your device. take control of your apps, and their/your setup, and your battery life should be good, no matter what rom/kernel youre on. greenify is a good app to help you get control of your apps.
Check your cord if its faulty, I had a faulty stock cord before telling me my phone was at 100% and when I unplugged it and used it, it went down to 50%
Changed cord, everything was fine.
Do you use a wireless charger? For me 90% of the time it creates a wakelock that won't allow the phone to go into deep sleep. That will hurt battery. If it releases that wakelock or I reboot my phone battery life is phenomenal.
Sent from my Nexus 4 using XDA Premium 4 mobile app
Im also having same problem
my battery drained from100 to 6% in just 4 and half hours...
SOT 1 and half hours only
Data roughly 2 hours..on and off
Auto brightness
No SYNC to any service
All notifications OFF
No GPS used
is it normal?
seems like cant use it as smartphone...battery draining like water
[V]endetta said:
Im also having same problem
my battery drained from100 to 6% in just 4 and half hours...
SOT 1 and half hours only
Data roughly 2 hours..on and off
Auto brightness
No SYNC to any service
All notifications OFF
No GPS used
is it normal?
seems like cant use it as smartphone...battery draining like water
Click to expand...
Click to collapse
hows your data signal? anyways, thats not normal. disable auto brightness, if your battery is still draining like that, then its not the auto brightness. in that case, its most likely an app, or apps.
simms22 said:
hows your data signal? anyways, thats not normal. disable auto brightness, if your battery is still draining like that, then its not the auto brightness. in that case, its most likely an app, or apps.
Click to expand...
Click to collapse
how to define my data signal?enlighten me please
Btw, im disable auto brightness just now
i do hope my app or apps the culprit behind this, not my battery
[V]endetta said:
how to define my data signal?enlighten me please
Btw, im disable auto brightness just now
i do hope my app or apps the culprit behind this, not my battery
Click to expand...
Click to collapse
what kind of data speeds do you get? do you frequently have to wait on the internet? hows the telephone signal?
simms22 said:
what kind of data speeds do you get? do you frequently have to wait on the internet? hows the telephone signal?
Click to expand...
Click to collapse
HSPDA..sometimes have to wait for internet if only got Edge...telephone signal no problem
[V]endetta said:
HSPDA..sometimes have to wait for internet if only got Edge...telephone signal no problem
Click to expand...
Click to collapse
Could u provide a screenshot of battery tab in option menu ? And install Betterbatterystast for a deep look on drains ...
peteyboy24 said:
hi everyone
i have recently got my n4, had it on stock for a few days and battery life was fine then flashed Paranoid Android and the battery life was even better, the one day the battery life randomly was just terrible so i flash back to stock 4.3 and it has not improve, getting about 1 hour screen on time
any help will be much appreciated
Click to expand...
Click to collapse
The best you can do is to post a screenshot as someone said before. Besides of this, if you have Google Services/Android System battery drain, you can go here:
http://forum.xda-developers.com/showthread.php?t=2385843
Hope it helps.

Is my battery damaged?

is my battery damaged ? I have tried many ROMs and on all of them I'm having a very bad battery life. I have everything turned off and my brightness is 0% and the battery drains super fast. what should I do ?
1. Do factory reset
2. Exchange the phone if option 1 doesn't work...good working G2s don't perform like your phone is @ the moment
tiguy99 said:
1. Do factory reset
2. Exchange the phone if option 1 doesn't work...good working G2s don't perform like your phone is @ the moment
Click to expand...
Click to collapse
How can I exchange it ? it is an international version D802
3thman said:
How can I exchange it ? it is an international version D802
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Click to collapse
What's the problem with that exactly? (Most issues with battery life are user problems - usually a poor wipe / flash regime and using poor quality apps and heavy syncing. I assume you have used the usual wakelock detection procedures).
Sent from my LG-D802 using XDA Premium 4 mobile app
Por signal will drain your battery.
Mostly apps are draining it post a screanshots of your battery stats.
Install gsam to see what's draining..
3thman said:
is my battery damaged ? I have tried many ROMs and on all of them I'm having a very bad battery life. I have everything turned off and my brightness is 0% and the battery drains super fast. what should I do ?
Click to expand...
Click to collapse
What do you define as "very bad", and how do you actually use your phone?
We can't guess to help you.
maydayind said:
Por signal will drain your battery.
Mostly apps are draining it post a screanshots of your battery stats.
Install gsam to see what's draining..
Click to expand...
Click to collapse
Yes, that's a big one on ma d802. If i'm in a room with bad connection, the battery goes down much faster then usual.
joeyvanhummel said:
What do you define as "very bad", and how do you actually use your phone?
We can't guess to help you.
Click to expand...
Click to collapse
like if im using the phone every 3 mins i lose 1 percent
maydayind said:
Por signal will drain your battery.
Mostly apps are draining it post a screanshots of your battery stats.
Install gsam to see what's draining..
Click to expand...
Click to collapse
Schindler069 said:
Yes, that's a big one on ma d802. If i'm in a room with bad connection, the battery goes down much faster then usual.
Click to expand...
Click to collapse
but i did not go to a bad signal place.. could be that my battery is dead ?
3thman said:
but i did not go to a bad signal place.. could be that my battery is dead ?
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Click to collapse
I would try to reset everything to factory, see how it goes then. If not, flash custom rom/kernel, tweak cpu and search for wakelocks. If the problem is still present, get a new battery.
3thman said:
like if im using the phone every 3 mins i lose 1 percent
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Click to collapse
1% / 3mins sounds like 5 hours on battery to me. Reasonable, but not great.
Depends if you have your screen on during that time or not, and what brightness, and what tasks it is doing. If that is screen off at all, then it's horrible. If full brightness screen-on for the whole time, then it's ok.
joeyvanhummel said:
1% / 3mins sounds like 5 hours on battery to me. Reasonable, but not great.
Depends if you have your screen on during that time or not, and what brightness, and what tasks it is doing. If that is screen off at all, then it's horrible. If full brightness screen-on for the whole time, then it's ok.
Click to expand...
Click to collapse
Yep. If you go to Battery, is your phone intensivly active while screen is off?
My Battery atm: 1d 3h 14m with 53m screen on time at 87%, but pretty much all day on wlan.
joeyvanhummel said:
1% / 3mins sounds like 5 hours on battery to me. Reasonable, but not great.
Depends if you have your screen on during that time or not, and what brightness, and what tasks it is doing. If that is screen off at all, then it's horrible. If full brightness screen-on for the whole time, then it's ok.
Click to expand...
Click to collapse
Schindler069 said:
Yep. If you go to Battery, is your phone intensivly active while screen is off?
My Battery atm: 1d 3h 14m with 53m screen on time at 87%, but pretty much all day on wlan.
Click to expand...
Click to collapse
I'm most worried that I have to exchange my phone cuz the battery is damaged
3thman said:
I'm most worried that I have to exchange my phone cuz the battery is damaged
Click to expand...
Click to collapse
If your phone is the international version, you have the option to buy a new battery And swap it out. I would try this since batteries are pretty cheap at the moment.
If it still drains after all these things only then do I recommend you return the phone for a new one
tiguy99 said:
If your phone is the international version, you have the option to buy a new battery And swap it out. I would try this since batteries are pretty cheap at the moment.
If it still drains after all these things only then do I recommend you return the phone for a new one
Click to expand...
Click to collapse
actually I searched for buying a battery but I did not find any website. Could you tell me where please ? thank you
Culd be som app running that is draining it.
Install a battery monitor. Like gsam then u can see what's drainimg the battery.
Try delete google+. Giving a lot wakelocks. If u are rooted install wakelock detector and let it run 2 or 3 hours and see if its under 20%
Sent from my LG-D802 using XDA Premium 4 mobile app
maydayind said:
Culd be som app running that is draining it.
Install a battery monitor. Like gsam then u can see what's drainimg the battery.
Click to expand...
Click to collapse
try it then delete what taking more battery
xros said:
try it then delete what taking more battery
Click to expand...
Click to collapse
I would suggest to stop draining processes first. If stopping it doesn't cause any problems i would rather freeze than delet it.
But if it's caused by a ****ty app you downloaded, delete it right away.
if none works, get warranty

Post your battery stats here!

Hey here you can post your battery stats in the following form:
1. overview of battery usage
2. display on time
Thank you
Edit: before complaining about bad results use wakelock detector from playstore thx.
here it is...
my batterry life is at least 5 days...
xangoch said:
my batterry life is at least 5 days...
Click to expand...
Click to collapse
But you have charged it several times and dont let it go from 100% to 1% in one discharging.
nexuspur said:
But you have charged it several times and dont let it go from 100% to 1% in one discharging.
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Click to collapse
this is between two recharges mate. i bought an extended battery from ebay for 9 usd including shipment.i use it to the very end and reboot my phone and i have more juice left for two more days.. thats what you see in the chart. and when you plug in the charger that counter is reset automatically,isnt it?
xangoch said:
this is between two recharges mate. i bought an extended battery from ebay for 9 usd including shipment.i use it to the very end and reboot my phone and i have more juice left for two more days.. thats what you see in the chart. and when you plug in the charger that counter is reset automatically,isnt it?
Click to expand...
Click to collapse
ok i missunderstand your stats sry it will be nice if you can post your screen on time too. thx
nexuspur said:
ok i missunderstand your stats sry it will be nice if you can post your screen on time too. thx
Click to expand...
Click to collapse
no harm,no faul. i will get screenshots this time to the end...
xangoch said:
this is between two recharges mate. i bought an extended battery from ebay for 9 usd including shipment.i use it to the very end and reboot my phone and i have more juice left for two more days.. thats what you see in the chart. and when you plug in the charger that counter is reset automatically,isnt it?
Click to expand...
Click to collapse
Is the extended battery bigger than the normal one?
Battery Life
Mine is awful , i don't know whether it's just me but i rarely get through a day with more than 10% left, whatever ROM i run. does anyone else experience this??
kieranswhite said:
Mine is awful , i don't know whether it's just me but i rarely get through a day with more than 10% left, whatever ROM i run. does anyone else experience this??
Click to expand...
Click to collapse
Your phone is always awake. Use Better Battery Stats to check where problem is.
Battery Life
tempazz said:
Your phone is always awake. Use Better Battery Stats to check where problem is.
Click to expand...
Click to collapse
wow i didnt even check thanks lol
usually max 2 days but I have new record:
Spoiler
The best battery i get every day
Any one can help me find the wakelock
Sent from my GT-I9192 using Tapatalk
fburgos said:
The best battery i get every day
Any one can help me find the wakelock
Sent from my GT-I9192 using Tapatalk
Click to expand...
Click to collapse
Wakelock Detector will help you: https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector
luisbraz said:
Wakelock Detector will help you: https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector
Click to expand...
Click to collapse
The thing is i can't understand all the data, any one have a good guide about wakelocks
Sent from my GT-I9192 using Tapatalk
fburgos said:
The thing is i can't understand all the data, any one have a good guide about wakelocks
Click to expand...
Click to collapse
Read/watch this:
Android Basics 101: Understanding Wakelocks
Cm11 m6 snapshot, f4k aosp kernel, intelliactive governor, fiops i/o, midrange use. The battery stats design is from xposed module xbatterystatscolors
Sent from my unknown using XDA Premium 4 mobile app
Stock Android 4.2.2 without root and with Greenify and Advanced Task Killer.
WiFi, 3G, Data and Sync are enabled.
I usually get only 24 hours on my S4 mini, so basically day + night, so I have to charge every night. I have wfi turned only at home (using Llama app). At midnight I turn off wifi and sync. It turns on at 6:00 in the morning. I have accuweather widget and one IMAP email account (using IMAP PUSH) syncing.
Is it normal that having Wifi turned on consumes so much more battery? It is visible very good in the screenshot and it is the same effect every day. Screen time on the screenshot was only 1h20m. I have brightness set to Auto -3.
marki555 said:
I usually get only 24 hours on my S4 mini, so basically day + night, so I have to charge every night. I have wfi turned only at home (using Llama app). At midnight I turn off wifi and sync. It turns on at 6:00 in the morning. I have accuweather widget and one IMAP email account (using IMAP PUSH) syncing.
Is it normal that having Wifi turned on consumes so much more battery? It is visible very good in the screenshot and it is the same effect every day. Screen time on the screenshot was only 1h20m. I have brightness set to Auto -3.
Click to expand...
Click to collapse
simply question have you restarted the device? because android os seems to consumes a lot of power. You also should install wakelock detector from playstore and look what app consumes so much power
Hey all i have a question can you all show me which your screen on time is that you will get usually with the stock battery? Thx to all in this thread who post their stats

S4 randomly shuts off

Recently, my S4 has been shutting of randomly. I got a new battery recently since the other one didn't work well, yet my phone is shutting off at around 50% of battery.
It's always around 50%?
Could be you somehow got another bad battery.
Pwnycorn said:
It's always around 50%?
Could be you somehow got another bad battery.
Click to expand...
Click to collapse
When I don't use it much it's around 50%
Sent from my SPH-L720 using Tapatalk
AlexS08 said:
When I don't use it much it's around 50%
Sent from my SPH-L720 using Tapatalk
Click to expand...
Click to collapse
*15%
Sent from my SPH-L720 using Tapatalk
Can you turn it back on after it shuts down or it refuses to turn on?
And if it does turn on, how much percentage is left?
I also have this problem! It is shutting down because of the heat, then the percentage floates between 08-20( depends on how much battery i`ve got before)
Same problem
Rhoban said:
Can you turn it back on after it shuts down or it refuses to turn on?
And if it does turn on, how much percentage is left?
Click to expand...
Click to collapse
Hi am having the same problem Did you managed to fix it. it doesn't turn off no matter how hot it gets if its plugged in (charging) sometimes its not the heat tried different ROM same problem Samsung s4 19505
nsikak said:
Hi am having the same problem Did you managed to fix it. it doesn't turn off no matter how hot it gets if its plugged in (charging) sometimes its not the heat tried different ROM same problem Samsung s4 19505
Click to expand...
Click to collapse
Hello, only two causes for this. Battery not calibrated or battery discharging too fast causing overheat, phone shuts down to prevent damage. If calibration does not work get a new battery.
I had a similar problem, it was the power button that was stuck, it's a bit common problem.
cooltt said:
Hello, only two causes for this. Battery not calibrated or battery discharging too fast causing overheat, phone shuts down to prevent damage. If calibration does not work get a new battery.
Click to expand...
Click to collapse
Thanks for replying.
I think its from the overheat problem but how does one calibrates their battery. Thanks

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