Database Users

[Q] A few questions.

First of all, I'm doing this guide (wiki[dot]cyanogenmod[dot]com/wiki/Troubleshooting#Battery_recalibration) since I recently rooted and flashed CyanogenMod 7.0.3. One of my questions was this: What's the quickest way to drain my battery? Currently, I have airplane mode off, wifi on, sync on, GPS/Navigation on, and I'm watching a Netflix movie with the screen at the brightest setting. It's been like this for maybe ten minutes and it's still at 100%. Since I'm going to sleep soon, I was hoping it would be quicker to eat up the battery.
Secondly: 'Cell Standby' keeps eating up all my battery. Seeing as how I don't have a cell coverage plan and I always use my phone with airplane mode (with wifi on), why does 'Cell Standby' use so much power?
Anyways, does anyone have any more battery saving options? I wouldn't like to turn off wifi or sync.

harry_seaward said:
First of all, I'm doing this guide (wiki[dot]cyanogenmod[dot]com/wiki/Troubleshooting#Battery_recalibration) since I recently rooted and flashed CyanogenMod 7.0.3. One of my questions was this: What's the quickest way to drain my battery? Currently, I have airplane mode off, wifi on, sync on, GPS/Navigation on, and I'm watching a Netflix movie with the screen at the brightest setting. It's been like this for maybe ten minutes and it's still at 100%. Since I'm going to sleep soon, I was hoping it would be quicker to eat up the battery.
Secondly: 'Cell Standby' keeps eating up all my battery. Seeing as how I don't have a cell coverage plan and I always use my phone with airplane mode (with wifi on), why does 'Cell Standby' use so much power?
Anyways, does anyone have any more battery saving options? I wouldn't like to turn off wifi or sync.
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Click to collapse
Have you tried different radios? also you can overclock and undervolt, those all can make a huge difference in your battery life.
Set you brightness to a low level and turn off auto brightness.
Use a darker colored background,this will normally use less lcd power.
Also GPS can eat up alot of battery.
You may want to change your sync/ push options to update less often.
Not too familiar with the cell standby eating up battery life, normally with airplane mode this should stop the phone from searching for service. also try battery calibration after you install any rom. you can find this in the market.
Hope this was somewhat helpful.
good luck!

SGH-I337M Never In Deep Sleep Mode

Hello XDA members! I have recently bought a used Samsung Galaxy S4 SGH-I337M Telus/Koodo a few days ago on a website similar to Craigslist but better (Kijiji). I got it unlocked and updated it Android 4.3 not rooted.
Anyways, my phone battery is really bad. Yesterday night, the battery was at 47% when I went to sleep. No apps were running except my SMS app and WakeLock Detector. The wifi was turned off, the Power Saving Mode was on and the brightness was set to its lowest. This morrning when I woke up, the phone was at 19%, so it lost 28% in about 8.5 hours while in standby mode. I tried the app Deep Sleep Battery Saver but it doesn't seem to work very well. When I check WakeLock Detector stats, the Deep Sleep time is always at 0.0 seconds; therefore, my phone has NEVER entered in Deep Sleep mode Help please?

Somoeone help pleaseeeee?

Did you read the app description? If you turn off WiFI and enable Power Saving mode, it block WIFI and Mobile DATA then the app cannot put your device in deepsleep.
Description:
During deep sleep mode, Wifi, 3G are turned off, background apps are stopped. Therefore, most apps are not working, including Facebook, Google Service, etc,. It then constantly wakes up in order to download email, sync Facebook status, etc,.
I can't really help you for the batt drain unless you could root your device to get more information from CPU: twist Process setting or buy another app on the playstore to monitor your battery drain like BetterBatteryStats.

[Q] Fluctuating Battery Usage Overnight - Why?

I have a new Samsung S4. Trying to learn how best to configure it to minimise battery usage and to ensure I don't install apps that eat battery. There's nothing wrong with it, battery usage is fine, just trying to get the best out of it; whilst keeping as much functionality as possible without having to constantly turn things on and off. I'm trying to avoid rooting it.
As a starting point, I'm checking usage overnight, when blocking mode and power saving are on, with wi-fi and data off; but with the alarm clock set.
I have an i-onik 7.85" tablet on Android 4.2.2 - with a deep sleep battery saver app set to slumberer ("always deep sleep when screen off") it only uses about 2% of battery overnight - the battery currently holds about 3600 mAh - so that 3% equates to 108mAh.
First time I tested my Samsung S4 (the european LTE version 9505), (actually I think I had wifi, data, location setting turned on and power saving turned off), it used 4% battery overnight. Not bad, 4% of 2600 mAh is 104 mAh. Still I thought I might do better. I tried the deep sleep app on slumberer but inexplicably the usage then jumped to 12% (whereas it at least halves battery usage on my tablet). I've since un-installed deep sleep battery saver and started turning off wi-fi, data, and turning on power saving - so I'd expect it to use 4% or less battery overnight.
The actual battery usage instead increased to around 9% to 12% - although the settings used might have varied.
Three nights ago I made sure that all apps were closed, and everything turned off as above - battery usage overnight was still 9%. I used WakeLock Detector and found that a Morrisons App was causing wakelocks. I uninstalled that, and the next night the battery usages was down to 6% with much fewer wakelocks. Still not as good as before though.
I then found there were wakelocks due hotmail and gmail sync - hotmail I changed from push sync to sync every 4 hours, gmail I changed from hourly sync to manual sync and I also turned off master sync. I also turned off location setting. That cleared the wakelocks for these apps, but battery usage last night had increased to 9%.
So, despite the same settings and less wakelocks (and it was in deep sleep all night except for 16 minutes), battery usage increased from 6% to 9% - still no where near the 4% I had at the start despite making various changes that should reduce battery consumption.
The only significant wakelocks last night were:
com.domobile.applock (via alarmManager) awake 35s giving 992 cpu wakelocks
com.google.android.google (google app) 7 wakeups
Can anyone think of any cause for increased battery usage from 6% to 9% despite more time in deepsleep, less wakelocks (other than the 2 above but there were many more wakelocks the night before lasting several minutes) and location setting turned off. I wonder about starting again from a factory reset ... NB every night before going to bed I've rebooted the phone, and charged it to between 90% and 96% and it's been tested over the same period of time. Is it normal for battery usage when the phone is sleeping to vary so much?

Charging the battery inconsistently might lower the battery life. And letting it discharge to much does the same. I generally avoid letting it go under 50% and unplugging it before 100%.
I don't know what causes your issues, but if you want full control over your phone, you will have to root.
I also had 2% drain over night at some point, but now I have 4%. But this may also be rom related.

Thanks. I'm on stock ROM. I have rooted other devices but then find some apps don't work, and of course I want to maintain my warranty.
Each day my battery is generally dropping to about 30% at which point I charge it up to between 90% and 95% before turning turning most things off ready for bed.
At some point I may leave it plugged in overnight instead - is that a bad thing?
What do you mean by charging inconsistently? Sometimes my battery may be around 50% though more often around 30% when I start it charging.

apwood said:
Thanks. I'm on stock ROM. I have rooted other devices but then find some apps don't work, and of course I want to maintain my warranty.
Each day my battery is generally dropping to about 30% at which point I charge it up to between 90% and 95% before turning turning most things off ready for bed.
At some point I may leave it plugged in overnight instead - is that a bad thing?
What do you mean by charging inconsistently? Sometimes my battery may be around 50% though more often around 30% when I start it charging.
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Click to collapse
By charging inconsistently I mean exactly what you said. You charge between 90 and 95% generally, instead of leaving it to charge 100%.
Somebody said that if you live in the EU you will not lose your consumer rights. I guess that includes the right to have your phone repaired because it is in warranty. Other people have reported that the phone service accepted and repaired their phone even though it had knox flag 0x1.
There isn't much you can do on stock unrooted roms in order to reduce battery consumption.
You battery drain is probably caused by weak signal strength. Having bad signal uses more battery. The screen and the phone radio use the most power on the phone. If you put our phone in airplane mode there should be almost no battery loss. If everything is turned off.
On my old device I used to put in airplane mode during the night. I had 0% drain over night in airplane mode.

GDReaper said:
By charging inconsistently I mean exactly what you said. You charge between 90 and 95% generally, instead of leaving it to charge 100%.
Somebody said that if you live in the EU you will not lose your consumer rights. I guess that includes the right to have your phone repaired because it is in warranty. Other people have reported that the phone service accepted and repaired their phone even though it had knox flag 0x1.
There isn't much you can do on stock unrooted roms in order to reduce battery consumption.
You battery drain is probably caused by weak signal strength. Having bad signal uses more battery. The screen and the phone radio use the most power on the phone. If you put our phone in airplane mode there should be almost no battery loss. If everything is turned off.
On my old device I used to put in airplane mode during the night. I had 0% drain over night in airplane mode.
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Click to collapse
Thanks - that's a good point about signal - my mobile signal and wi-fi signal does seem to vary, so that could contribute to fluctuating battery usage. I decided to test that by using airplane mode and have started charging to 100% on your advice. Unfortunately when trying to dismiss the prompt to upgrade to lollipop, I accidentally started the upgrade, with no way to cancel it. (For me, lollipop really seems a downgrade, I've lost a lot of functionality I used all the time in KitKat).
The bad news it that on lollipop overnight last night, despite using power saving mode and airplane mode, and basically everything else off including sync, it lost 7% of battery.
So I decided to do a factory reset, thinking it would go back to KitKat - but it didn't - it stayed on lollipop. It did give me the option to choose which extra apps to install (including some Samsung ones) - I declined to install any extra apps, and also turned off automatic app updates - I then turned off sync, backup and anything else that I thought might eat battery - leaving the phone with the most basic set up possible. I've not since installed any apps except Talk2Go.
The good news it that since the "factory reset" to lollipop, I've tested it for two periods of 4.5 hours on airplane mode, everything off, and I did not turn on power saving mode. The battery lost less than 1% - in fact for my last test it stayed at 100%. So either the reset fixed battery loss on lollipop, or the power saving mode was actually causing battery loss!
I'll investigate that and report back for the benefit of other users. I'll then gradually update my settings and see what, if anything causes battery usage to increase when on airplane mode. Of course it's also possible that battery usage might increase without changing anything, as per some reports from those upgraded to Lollipop - if so I'll report on that - and confirm if a reset seems fixes it.
Lollipop is supposed to have a battery saver mode - but it seems to be missing in the stock OTA update to S4 - does anyone know how to use this mode? It sounds better than Samsung's own power saving mode (especially since that might actually be causing battery drain rather than saving battery!)

apwood said:
Thanks - that's a good point about signal - my mobile signal and wi-fi signal does seem to vary, so that could contribute to fluctuating battery usage. I decided to test that by using airplane mode and have started charging to 100% on your advice. Unfortunately when trying to dismiss the prompt to upgrade to lollipop, I accidentally started the upgrade, with no way to cancel it. (For me, lollipop really seems a downgrade, I've lost a lot of functionality I used all the time in KitKat).
The bad news it that on lollipop overnight last night, despite using power saving mode and airplane mode, and basically everything else off including sync, it lost 7% of battery.
So I decided to do a factory reset, thinking it would go back to KitKat - but it didn't - it stayed on lollipop. It did give me the option to choose which extra apps to install (including some Samsung ones) - I declined to install any extra apps, and also turned off automatic app updates - I then turned off sync, backup and anything else that I thought might eat battery - leaving the phone with the most basic set up possible. I've not since installed any apps except Talk2Go.
The good news it that since the "factory reset" to lollipop, I've tested it for two periods of 4.5 hours on airplane mode, everything off, and I did not turn on power saving mode. The battery lost less than 1% - in fact for my last test it stayed at 100%. So either the reset fixed battery loss on lollipop, or the power saving mode was actually causing battery loss!
I'll investigate that and report back for the benefit of other users. I'll then gradually update my settings and see what, if anything causes battery usage to increase when on airplane mode. Of course it's also possible that battery usage might increase without changing anything, as per some reports from those upgraded to Lollipop - if so I'll report on that - and confirm if a reset seems fixes it.
Lollipop is supposed to have a battery saver mode - but it seems to be missing in the stock OTA update to S4 - does anyone know how to use this mode? It sounds better than Samsung's own power saving mode (especially since that might actually be causing battery drain rather than saving battery!)
Click to expand...
Click to collapse
Samsung probably replaced the stock lollipop battery saver with their own battery saver.
You could return to kitkat by flashing via Odin. Doing so will not give you knox status 0x1 and you don't even need root.
On second thought, you have the new bootloader so you probably won't be able to do it without tripping knox..
From what I saw, battery saver changes only the minimum screen brightness to a lower value than normal and it changes the CPU governor to a more battery friendly one.
This is what I observed on the GPE rom battery saver mode.

Testing continues - for the first few nights battery drain was less than 2% on airplane mode, but it wasn't repeated last night. It drained 9% with exactly the same settings (ie everything off except the alarm clock, no foreground processes running and airplane mode on).
I've installed a few apps - one from TalkTalk, one from Three Mobile, a terminal emulator and wakelocks detector. So have now uinstalled the first 2 to see if they are causing the drain - BUT I suspect it's a bug in this release of Android Lollipop.

apwood said:
Testing continues - for the first few nights battery drain was less than 2% on airplane mode, but it wasn't repeated last night. It drained 9% with exactly the same settings (ie everything off except the alarm clock, no foreground processes running and airplane mode on).
I've installed a few apps - one from TalkTalk, one from Three Mobile, a terminal emulator and wakelocks detector. So have now uinstalled the first 2 to see if they are causing the drain - BUT I suspect it's a bug in this release of Android Lollipop.
Click to expand...
Click to collapse
Many people have problems with the stock lollipop. Samsung messed up.
It might also be the battery. I have my phone since november. My battery used to drain 2% over night. Now it drains 4% over night. Basically it drains very fast to 96%, from there it drains normaly, depending on the usage. This happens on every rom I tried and with even the most battery oriented settings.

You seem to be using applock. If you don't need it you can delete it and get rid of a few wakelocks.

Disable Stamina Mode for a Better Phone

Having now used the Z5 (Normal Version) for about 2 months, I have noticed one major thing about Stamina function. It is an absolutely amazing feature that does a great job in saving battery life *BUT*, and it is a big but, if you really want to enjoy your phone then this needs to be turned off because it greatly inhibits performance.
Things that I have noticed include:
"OK Google" commands works intermittently
Camera load time is slow
Style Cover widget lags
System updates don't download automatically, also seem struggle in finishing app updates from the store
Maybe it is not an issue if you do not use those features but because I do and it is proving to be a real stumbling block in allowing me to enjoy an otherwise excellent device.
What's your experience with Stamina Mode? Have you got any tips to make it work better or came across any issues yourself?

I don't really use it myself except for at overnight (it's my alarm clock) but you haven't mentioned if you've also enabled "Extended usage" which "Restricts device performance in to increase battery time". Maybe you'll have a better experience with that OFF?

From my understanding, how STAMINA mode works is to pause all apps that it could when the screen is off. So the battery life is extended because less apps are running when you are not using the phone. Hence the phone enters deep sleep and this results in the laggy experience you encountered. When a number of applications return to normal state at the same moment, that would be a time several processes compete for CPU time and that could be one of the reasons that cause the phone to be laggy after waking up from long idle. Battery life and performance is often a trade-off and therefore your experience sounds normal to me.

w11184 said:
Having now used the Z5 (Normal Version) for about 2 months, I have noticed one major thing about Stamina function. It is an absolutely amazing feature that does a great job in saving battery life *BUT*, and it is a big but, if you really want to enjoy your phone then this needs to be turned off because it greatly inhibits performance.
Things that I have noticed include:
"OK Google" commands works intermittently
Camera load time is slow
Style Cover widget lags
System updates don't download automatically, also seem struggle in finishing app updates from the store
Maybe it is not an issue if you do not use those features but because I do and it is proving to be a real stumbling block in allowing me to enjoy an otherwise excellent device.
What's your experience with Stamina Mode? Have you got any tips to make it work better or came across any issues yourself?
Click to expand...
Click to collapse
If you click on the "stamina mode" entry (not the on/off button), you can add apps to a whitelist who will not be affected.

I have no need for stamina mode on my Z5, the battery life is more than enough for me...
On my Z1 i always had stamina mode enabled, otherwise the battery didn't last the day.
Sent from my Sony Xperia Z5

Thanks for all your replies. So I only have the standard stamina mode on and not the extended one and I have also tried adding apps to the whitelist hoping that it will improve performance for those apps but I don't think it has made any difference.
heihei_ivan, that is also my thinking behind why I think the phone is laggy when waking up but I just didn't think it would affect it that much.
I think what I will do now is to turn stamina mode off and see how long it will last. Like Snaqejack, I think it might actually be ok!

I personally don't understand why people buy an octacore high end high powered HD screen smart phone and then go... Right lets activate everything which restricts performance, smartphone usage, syncs and pushes, dims the screen to the minimum etc... Might as well just bought a lower spec model in the first place
I understand using those settings for things like night time, when the battery is low, if you're out for the day and don't need your phone particularly for anything but receiving the odd call or text etc... But for continuous use 24/7 i just don't get why people do it
Sent from my Xperia z5 using Tapatalk

They're just trying to cheat physics - everyone wants a free lunch

I configured Stamina Mode to auto-enable when I reach 15% battery left. That's the best compromise I think.

Ben36 said:
I personally don't understand why people buy an octacore high end high powered HD screen smart phone and then go... Right lets activate everything which restricts performance, smartphone usage, syncs and pushes, dims the screen to the minimum etc... Might as well just bought a lower spec model in the first place
I understand using those settings for things like night time, when the battery is low, if you're out for the day and don't need your phone particularly for anything but receiving the odd call or text etc... But for continuous use 24/7 i just don't get why people do it
Sent from my Xperia z5 using Tapatalk
Click to expand...
Click to collapse
I can guarantee you I am not one of those people, however, Stamina mode is one of the phone's main USPs but what I am noticing is that it seems to induce lag when performing a variety of tasks even though the specific option to cap performance in Stamina mode isn't turned on.

You need to put Google Play Services on the white list and Google Framework IIRC. This becouse several apps depend on these services to have internet access like for example Facebook Messenger. Else they wont work properly, you might get logged out or they will restart once you go back.

thanks

Battery life astonishingly high after charging...

The first picture is without stamina mode and second one with stamina mode

Those estimates never accurate, that's only for a phone that's not doing anything on it just sit on your table standby mode, might as well buy a regular flip phone.
Sent from my E6653 using Tapatalk

Not used my phone for the whole day...uploading results after using consistently for Web browsing, YouTube etc...

With and without stamina mode

Awesome Man....

I've used Stamina mode for a long time, but I decided recently to turn it off completely, as an experiment, not just on this phone, but on my Z3 too.
I never use the low battery mode because it always turns stuff off when I still want to use it, so no point for me.
I must say that in real time, Stamina mode doesn't make a great deal of difference to me, plus now I get all of my notifications if I leave my mobile internet on. My WiFi is set to turn off when the screen is off. I know it's automatically set to Always on when you first get the phone, and that kills the battery.
I still get at least a full days usage out of whichever phone I use the most that day, and several days from the phone I use the least. I tend to swap using phones from one to the other, and back again.
Stamina mode only works when you're not using your phone, and for me that's not a lot of my day really. I do use them regularly.
I was quite surprised at how long they do last, even without Stamina mode.
Stamina mode is good for work so you don't get notifications while you're working, just at break times when you check your phone. My kids moan at me for not getting my WhatsApp messages or whatever when I have Stamina mode on too, so there is that :laugh:

MickieH said:
I've used Stamina mode for a long time, but I decided recently to turn it off completely, as an experiment, not just on this phone, but on my Z3 too.
I never use the low battery mode because it always turns stuff off when I still want to use it, so no point for me.
I must say that in real time, Stamina mode doesn't make a great deal of difference to me, plus now I get all of my notifications if I leave my mobile internet on. My WiFi is set to turn off when the screen is off. I know it's automatically set to Always on when you first get the phone, and that kills the battery.
I still get at least a full days usage out of whichever phone I use the most that day, and several days from the phone I use the least. I tend to swap using phones from one to the other, and back again.
Stamina mode only works when you're not using your phone, and for me that's not a lot of my day really. I do use them regularly.
I was quite surprised at how long they do last, even without Stamina mode.
Stamina mode is good for work so you don't get notifications while you're working, just at break times when you check your phone. My kids moan at me for not getting my WhatsApp messages or whatever when I have Stamina mode on too, so there is that :laugh:
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Click to collapse
Actually, Wifi will not kill the battery, mobile data will. It's always better to keep wifi on and use 2G as that has a much stronger signal and won't impact battery.

Battery usage when airplane mode is on and off question

So I noticed something the other day and I need help figuring it out
While the phone is in airplane mode+wifi turned on+sync is on and everything else is on
I managed 2 days of battery life with almost 8 hours screen on time (browsing using Google chrome a lot+ YouTube for about 2 hours+ taking about 50 pics during my trip all synced to Google photos)
When airplane mode is off (data is off as well) connected to WiFi (everything is same when airplane mode is on,except no camera was used)
I can manage 4 hours of screen on time (browsing using chrome+YouTube) and about 8-9 hours total battery life
How can "cell signal?" (not sure what's the correct word for it exactly) use that much battery? Is there any way to optimize it?instead of switching airplane mode all the time?
I heard about signal scanning all the time,so I forced 3g only ,but it doesn't help at all

elixir. said:
How can "cell signal?" (not sure what's the correct word for it exactly) use that much battery?
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Click to collapse
It just does, and if your signal is low it uses even more battery to keep the connection alive.

hi my phone battery is very fast drain in standby
please help to fix it
my rom stock