Hi everyone,
I appreciate that there are threads on this already but this is different.
I have created a petition because Samsung support have not acknowledged that there is an issue. There recommendation was to "Factory reset".
It has been identified by members of the forum that the mA in battery stats used to calculate Cell Standby % has been set ridiculously high.
Please see explanation here.
Rooted users can fix this by flashing more realistic values here
I would like everyone who has the issue to sign the petition, so we can send it to Samsung and prove how much we like this fixed.
Link is here:
http://www.ipetitions.com/petition/samsung-galaxy-s3-cell-standby-issue/
Moderators, please do not merge / delete. Could this sticky please?
I wrote this in the other thread but I'll leave it here as well.
Do you guys realize at all how this works?
I mean, cell standby, percent shown means how much is used of the current % usage... If there is 50% percent of battery used, and 30% by cell standby, that means that 30% out of that 50% in total was used by cell standby, not that cell standby used 30% of battery, are you even aware of that?
If your phone's screen is off most of time, it is normal that the cell standby will be high in this list then. That doesn't mean it drains your battery it just shows how much of used battery was used for cell standby...
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Click to collapse
Minoza said:
I wrote this in the other thread but I'll leave it here as well.
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Yeah makes perfect sense. Also goes to show how efficient the screen is compared to other phones including the sgs2. I think the sluggish touch wiz with all the screen redrawing is more of an issue.
Minoza said:
I wrote this in the other thread but I'll leave it here as well.
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Click to collapse
Yes we are aware of how it works. Its simple maths.
The issue is as many of us see it, even with screen on times of 2 hours +, the cell standby is massively high and sometimes more than screen on time. This is NOT right!
Turn off wifi and data and battery loses 1% every hour or 2. With wifi & or data on the phone loses about 2-3% every hour.
The reception radio isn't the problem.
Most likely some background syncing happening. I've turned all types of background syncing but drain persists.
Could just be that having wifi or data on chews up battery, ie hardware.
Sent from my GT-I9300 using xda premium
Minoza said:
I wrote this in the other thread but I'll leave it here as well.
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Click to collapse
Thank you captain obvious
It's the fact that cell standby often tops the battery usage list even when the screen has been on for like 2.5 hours. It was never this high in the S2 or other Android phones.
Somebody suggested it could be a change in the way cell standby is reported, which is a possibility, but it would be helpful if Samsung would confirm or deny that.
matttye said:
but it would be helpful if Samsung would confirm or deny that.
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Precisely.
In my email to them, I asked them to confirm if it was reporting.
matttye said:
Thank you captain obvious
It's the fact that cell standby often tops the battery usage list even when the screen has been on for like 2.5 hours. It was never this high in the S2 or other Android phones.
Somebody suggested it could be a change in the way cell standby is reported, which is a possibility, but it would be helpful if Samsung would confirm or deny that.
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Click to collapse
I see. Yeah, sorry for being obvious then, I just had a feel that some folks don't get it and wanted to explain it. I don't have battery drain issue. But I don't have wifi and 3g on all the time though.
Minoza said:
I see. Yeah, sorry for being obvious then, I just had a feel that some folks don't get it and wanted to explain it. I don't have battery drain issue. But I don't have wifi and 3g on all the time though.
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Its ok. We know that some people dont understand how it works. I wish it was just that this time
rootSU said:
Precisely.
In my email to them, I asked them to confirm if it was reporting.
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Do you have a static IP set up on your network at home?
Something I just realised is that my battery reported "Wi-Fi" usage when I was using DHCP, but it doesn't report Wi-Fi now that I have a static IP set up.
I'm going to change it back to use DHCP and see if that makes a difference. It could be that Wi-Fi is being reported under cell standby usage for some reason.
Although... that doesn't explain why cell standby is so high while I'm at work and not connected to Wi-Fi!
Minoza said:
I see. Yeah, sorry for being obvious then, I just had a feel that some folks don't get it and wanted to explain it. I don't have battery drain issue. But I don't have wifi and 3g on all the time though.
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Sorry, your "do you guys know at all how this works?" comment came across as a little condescending but you probably didn't mean it to be
The issue is basically that cell standby is using a lot more on this phone than on any others, but it could be a reporting issue. We're trying to figure out what's causing it.
matttye said:
Do you have a static IP set up on your network at home?
Something I just realised is that my battery reported "Wi-Fi" usage when I was using DHCP, but it doesn't report Wi-Fi now that I have a static IP set up.
I'm going to change it back to use DHCP and see if that makes a difference. It could be that Wi-Fi is being reported under cell standby usage for some reason.
Although... that doesn't explain why cell standby is so high while I'm at work and not connected to Wi-Fi!
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Click to collapse
Yes after your thread on AF, I set it to Static. You reported that initially was "wlan_rx_wake" under android OS.
I wasnt experiencing high Android OS usage, but I did it anyway. It hasn't affected cell standby.
I cannot recall if WiFi was reported separately in the battery report page before Static but it definitely isnt there now.
I have tasker turn off my WiFi and I spend all day at work with wiFi off (But data still on) and I still have the issue.
It is slightly better than it was after changing modems and roms, but its still high.
rootSU said:
Yes after your thread on AF, I set it to Static. You reported that initially was "wlan_rx_wake" under android OS.
I wasnt experiencing high Android OS usage, but I did it anyway. It hasn't affected cell standby.
I cannot recall if WiFi was reported separately in the battery report page before Static but it definitely isnt there now.
I have tasker turn off my WiFi and I spend all day at work with wiFi off (But data still on) and I still have the issue.
It is slightly better than it was after changing modems and roms, but its still high.
Click to expand...
Click to collapse
I may be mistaken about WiFi being reported separately, just seemed to recall it was I just went back to DHCP and it didn't make a difference.
But yes... I seem to get high cell standby with or without WiFi on. Having a bad signal doesn't seem to have as much of an impact as it used to, as cell standby is so high anyway.
Although it does appear to be a simple reporting issue, we should still show how much we want this fixed.
Only 46 signatures. Please sign if you would like realistic consumption information in the battery stats page.
To let you know, I have re-reported this issue to Samsung, including the 150+ signatures received so far
I doubt that this is simply a calculation and displaying issue.
By loosing 2-3% charge every hour the battery should be depleted in about 35 hours without doing anything else. Let's say the real drain is about 1% per hour. A tenfold displaying error in modem power usage would mean a difference of real 50-60 hours in battery time.
Also yesterday the phone didn't seem to want to go into deep sleep, rather staying at 200MHz most of the time. This was using I9300XXALE8. Today I installed I9300XXALF6 OTA and that issue might be solved. Although I have no long term experiences yet, naturally. But the battery drain seems still to be there.
The attached screenshot shows usage with 17min of screen usage.
Stock rom, no root or anything else.
Here is an update:
Dear Dan
Thank you for contacting Samsung and I have pleasure in providing the following assistance.
In response to your query, please be advised that our engineers are currently investigating the issue you have described. If they find it to be a genuine fault then a firmware update will be rolled out as soon as possible. Due to the nature of our investigation we are unable to advise on a timescale for any possible update.
If you require any further assistance, please contact Samsung again and we will be more than happy to help.
Kind regards
David
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Click to collapse
Related
I've read and read, searched and searched this forum and have not come across my exact problem yet...
I know there have been overheating issues, and I know there have been boot looping problems... all causing terrible battery life, mine has neither. Let me rephrase, my overheating issue is not due to me actually using the phone... On idle (with the screen off), my Rezound only lasts about 2 hours on a full battery. Granted, I live in an area where there isn't full service, but there is some service. I can watch as data is being exchanged with no apps running. What the hell is using data? I have a feeling this is what is killing my battery, the phone is not at all sleeping. I have deselected "always on data" and I turned off fast boot and auto sync.
Any suggestions would be greatly appreciated.
BTW, my phone is a bone stock refurb.
Try a factory reset maybe?
I can do that, but it doesn't really solve the problem. It just started doing this yesterday. I've had it over 2 months and haven't downloaded anything different. I would really rather just figure out what is causing it, so I don't have to do a factory reset every time something like this happens. You know? Thanks for your suggestion, I'm afraid that is going to be my last resort right before exchanging it...
Try exchanging the battery first. Start small. Work your way up to the big stuff(exchanging the phone). Why give up the customizations you've done if you just have a bad battery?
I was thinking it may be a bad battery, but it concerns me that I can watch the data stay running even though I'm not using anything that requires it. My brother has a Rezound and I placed mine next to his and literally watched the battery life deplete 10% in 5 minutes while his lost no percentage at all, both were idle with the same screen settings. Is it common for a battery to fail that drastically out of nowhere?
sanders858 said:
I was thinking it may be a bad battery, but it concerns me that I can watch the data stay running even though I'm not using anything that requires it. My brother has a Rezound and I placed mine next to his and literally watched the battery life deplete 10% in 5 minutes while his lost no percentage at all, both were idle with the same screen settings. Is it common for a battery to fail that drastically out of nowhere?
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Is it common....no, possible yes, plausible given the circumstances....absolutely.
sanders858 said:
I was thinking it may be a bad battery, but it concerns me that I can watch the data stay running even though I'm not using anything that requires it. My brother has a Rezound and I placed mine next to his and literally watched the battery life deplete 10% in 5 minutes while his lost no percentage at all, both were idle with the same screen settings. Is it common for a battery to fail that drastically out of nowhere?
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Click to collapse
If data is constantly being used, something HAS to be using your data. I'd get an app like better battery stats and CPU spy. CPU will show you if your phone is going into sleep mode at all and better battery stats can show you which apps may be causing it.
Do you have the 4G antenna on?
I have betterbatterystats, it shows android system at the top of processes. That program is a little difficult to understand since everything is abbreviated.
I appreciate all of your responses. I just got off the phone with Verizon, they're sending me another phone AND battery for good measure. During lunch today I watched the percentage of my battery deplete while it was plugged into the wall and not being used, used a different charger, nothing. It wasn't even hot. I turned the phone off to try to get it to charge. when I turned it back on, it got to the lockscreen and then restarted itself. Boot looping now. I'm not going to fool with it anymore. Maybe the third Rezound will be better.
AtLemacks said:
Do you have the 4G antenna on?
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I haven't changed anything from out of the box other than visual properties. I'm assuming the network has a little to do with it, but it started failing way too fast to be a radio problem IMO.
I received my 2nd Rezound last week. First one had the hiss/feedback/interference issue through the headphone jack that escalated to a level of to not being able to use the headphones at all without being painful. Anyway, the new one is running very hot (battery) and is draining the battery almost as fast as you're describing yours to do. I've used both the standard battery and extended. This morning while using it at home on wifi with most of my syncs either disabled or set at a min of 2 hrs it drained my extended battery by 20% in 20 mins. I wasn't even using the internet or streaming any music or video. I was working on setting up calender and task list widgets. Phone is stock, not rooted. I will be calling Verizon tonight to see about getting a 3rd one. Sucks as I really like this phone when it's working properly. If the 3rd one has issues to and HTC isn't rolling out any fixes for them I might have to look at something else. But I don't want to!
I feel like if I can get the hardware to cooperate with me, I can get the software to. I was planning on rooting after the ICS push, but the phone obviously had different plans.
Set your phone to CDMA only, especially if you don't live in an area with LTE coverage. You will see significant battery advantages from that alone.
AtLemacks said:
Set your phone to CDMA only, especially if you don't live in an area with LTE coverage. You will see significant battery advantages from that alone.
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Click to collapse
Thanks, I'll be sure to try that when I get my new phone tomorrow!
AtLemacks said:
Set your phone to CDMA only, especially if you don't live in an area with LTE coverage. You will see significant battery advantages from that alone.
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Click to collapse
I should have mentioned that I'd already done that (only 3G here anyway). I've done all the battery management tricks I've read about but this phone has an issue. I'm not even getting half the battery life out of it that I was on the 1st one. And the battery gets significantly hotter then the other phone.
tried wiping battery stats after 100% and drained/recharged a few times?
sent on tapatalk on my htc rezound
if I helped please be sure to use the "thanks" option for me
Is this normal? I've had several android phones and this is the first time I'm seeing Cell Standby kill SO much battery.
I'm on stock rom with tibu frozen/removed bloated apps.
Same, it seems like cell standby time is around half of the battery usage. It's ridiculous, especially considering the screen is usually the battery drainer. I've heard that others have had this problem, and that, specifically, it was very prominent on the International Version. But I heard, however, that they supposedly fixed it for the US versions.
While I'm not sure about this, especially since many others, on other carriers, have also complained about the cell standby draining battery. If anyone has a clear answer, it'd be great.
Aside from the fact that so much battery seems to be lost due to cell standby, I am able to go around a day and a half with one battery, according to my "Battery Manager".
Yze said:
Is this normal? I've had several android phones and this is the first time I'm seeing Cell Standby kill SO much battery.
I'm on stock rom with tibu frozen/removed bloated apps.
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Click to collapse
Is it searching for signal? If your in a week signal area it'll kill the battery quick.
Xalky said:
Is it searching for signal? If your in a week signal area it'll kill the battery quick.
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Click to collapse
it shouldnt be. prior to this s3, i had an htc one x, a note, an s2 skyrocket, an s2. never had an issue with cell standby til this s3.
Wesobsessed said:
Same, it seems like cell standby time is around half of the battery usage. It's ridiculous, especially considering the screen is usually the battery drainer. I've heard that others have had this problem, and that, specifically, it was very prominent on the International Version. But I heard, however, that they supposedly fixed it for the US versions.
While I'm not sure about this, especially since many others, on other carriers, have also complained about the cell standby draining battery. If anyone has a clear answer, it'd be great.
Aside from the fact that so much battery seems to be lost due to cell standby, I am able to go around a day and a half with one battery, according to my "Battery Manager".
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Click to collapse
This has been posted multiple times BUT...the Cell Standby reporting is an error - it's not really taking that much battery it is reported wrong. I'm getting expected battery life even with Cell Standby being so high - just ignore it UNLESS you're getting abnormally low battery life.
The bug is ONLY with the "%" displayed by battery in stand by mode.
The fix won't improve the battery.
the real value of the "cell stand by" should be divided by 10
so, It's only a display error.
http://www.xda-developers.com/andro...ii-cell-standby-power-drain-issue-identified/
thanks, that makes a lot more sense. ill apply the fix so I can better understand what exactly is killing my battery.
My new Galaxy S3 seems to be draining 2-3% per hour on standby, which doesn't seem normal to me. That's 20-30% lost over the course of the day whilst idle -- too much juice lost for my liking.
Most of the drain comes from cell standby. I'm aware of the bug which reports cell standby much higher than in reality, but that shouldn't affect the actual speed of the drain, just the reporting.
I suspect that the drain is because I cut my old SIM card down to a micro SIM, but I'm not sure. The cut isn't exactly perfect, although the phone does read it. From what I have read, all the SIM card does is supply credentials for accessing the mobile network, so it shouldn't affect signal strength, only whether the phone connects to the network. The signal seems to be weaker on the GS3 than on my old phone, but not that bad -- the signal still perfectly usable in most areas and I never actually lose signal altogether unless in a poor reception area. The drain seems excessive even though I don't lose signal most of the time.
Thanks in advance for the help.
Dawn Hikari said:
My new Galaxy S3 seems to be draining 2-3% per hour on standby, which doesn't seem normal to me. That's 20-30% lost over the course of the day whilst idle -- too much juice lost for my liking.
Most of the drain comes from cell standby. I'm aware of the bug which reports cell standby much higher than in reality, but that shouldn't affect the actual speed of the drain, just the reporting.
I suspect that the drain is because I cut my old SIM card down to a micro SIM, but I'm not sure. The cut isn't exactly perfect, although the phone does read it. The signal seems to be weaker on the GS3 than on my old phone, but not that bad -- the signal still perfectly usable in most areas and I never lose signal unless in a poor reception area. The drain seems excessive even though I don't lose signal most of the time.
Thanks in advance for the help.
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Click to collapse
If you are having such excessive battery drain, I would recommend (if you want) to root your phone and installer BetterBatteryStats to track down what is draining your phone so excessivly.
Also freezing unwanted apps with Titanium or simply uninstalling them can help.
If you have not done so, in your wireless settings, advanced, keep wi-fi on during sleep, change to Never. This could also help.
I would also take a look at your sync settings. High frequency syncing can cause an increase in battery drain
Hi, thanks for the suggestions.
I have already tried disabling wifi and disabling sync (I do so by default), but the drain is still excessive. It's definitely coming from the mobile connection.
I would like root and use BetterBatteryStats, but I'm a worried about voiding my warranty (I'll be sending the phone to Samsung as a last ditch resort). Is there a simple way to root and unroot without Samsung knowing about it?
Dawn Hikari said:
Hi, thanks for the suggestions.
I have already tried disabling wifi and disabling sync (I do so by default), but the drain is still excessive. It's definitely coming from the mobile connection.
I would like root and use BetterBatteryStats, but I'm a worried about voiding my warranty (I'll be sending the phone to Samsung as a last ditch resort). Is there a simple way to root and unroot without Samsung knowing about it?
Click to expand...
Click to collapse
You can root your phone, then before you unroot the phone use TriangleAway to reset the binary counter to 0 which will keep your warrenty vaild, then return the phone to stock unrooted.
I had the same drain issue when I first got the phone. Rooted, and went to a custom rom, and custom kernal, getting better battery life than ever.
OK thanks a bunch, I'll try that when I get home and post the results!
Also if anyone could tell me whether my SIM card theory seems plausible or not, could you please let me know?
So I've rooted my phone and installed BetterBatteryStats. How should I go about recording the battery usage? Charge to 100% and leave the phone idle?
Dawn Hikari said:
So I've rooted my phone and installed BetterBatteryStats. How should I go about recording the battery usage? Charge to 100% and leave the phone idle?
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Click to collapse
Basically... You can use the phone as normal, but what you are looking for is the partial and kernel wakelocks that occur while it is supposed to be asleep. Once you start getting partial wakelocks it will help you track down what is waking the phone up, so you can take corrective actions, to save yourself some battery life.
OK thank you once again, I'll use the phone as normal and post the results at the end of the day.
Dawn Hikari said:
OK thank you once again, I'll use the phone as normal and post the results at the end of the day.
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Click to collapse
NP at all! Post what you get if your getting stuck. :highfive:
Now that your rooted you could also consider custom kernels to get you some more battery life. Just a thought
6
تم الإرسال من جهازي gt-i9300 بواسطة تاباتوك 2
Kernel wakelock:
Partial wakelocks:
NewAussiefromCanada said:
NP at all! Post what you get if your getting stuck. :highfive:
Now that your rooted you could also consider custom kernels to get you some more battery life. Just a thought
Click to expand...
Click to collapse
Thanks for the suggestion, I I'll definitely be doing that eventually.
Though for the moment, I want to make sure that this isn't a hardware (SIM card) problem.
I dont think so, there is no way it should and it wouldnt be able to drain that much anyway
If you wanted to test it yourself you could take out the simcard after a couple hours of sleep and see if its really hot (take it out and check quickly because it'd loose heat fast due to materials etc) because the power would need to go somewhere & if its a problem with the SIM card then it'll be diverted to the card and it would be dispersed via heat
Magik_Breezy said:
I dont think so, there is no way it should and it wouldnt be able to drain that much anyway
If you wanted to test it yourself you could take out the simcard after a couple hours of sleep and see if its really hot (take it out and check quickly because it'd loose heat fast due to materials etc) because the power would need to go somewhere & if its a problem with the SIM card then it'll be diverted to the card and it would be dispersed via heat
Click to expand...
Click to collapse
OK thank you for the suggestion, I'll give it a shot.
If someone could look at me kernel wakelock and partial wakelock stats and see if there's anything unusual, that would be great.
I decided to do a little bit of research, and it seems that much of the battery drain is wifi related (wlan_rx_wake and wlan_wake), but there may also be some mobile connectivity issues as well (l2_hsic and ConnectivityService).
Is my interpretation correct? What can I do to stop these wakelocks?
Dawn Hikari said:
I decided to do a little bit of research, and it seems that much of the battery drain is wifi related (wlan_rx_wake and wlan_wake), but there may also be some mobile connectivity issues as well (l2_hsic and ConnectivityService).
Is my interpretation correct? What can I do to stop these wakelocks?
Click to expand...
Click to collapse
Try battery saving kernels and rom like CNA...
Rom: CodeBox 1.4.0 Unofficial
Kernel: Horsepower 3.1 by fuss
If you like my post please hit thanks button...
Can't you disable that somewhere in settings? I think they call it Wifi timer
Im not sure though because I never have wifi on - boarding school )':
Sent from my GT-I9305T using xda app-developers app
Well I know that there's an option to disable wifi during sleep, but I discovered that my phone never seems to go to deep sleep in the first place unless I actually turn off wifi and mobile data manually.
I think I've isolated the problem to data connectivity being on. If wifi and mobile data are disabled, the battery drain is normal (basically nothing), but the drain occurs if one of both are enabled. So something is sucking data in the background -- this conclusion also seems to be consistent with my wakelock stats.
I don't know if it's a rogue app -- I disable sync by default, and almost all of the apps installed on this phone are also installed on other devices and I haven't experienced any excessive battery drain on those.
Black_Prince said:
Try battery saving kernels and rom like CNA...
Rom: CodeBox 1.4.0 Unofficial
Kernel: Horsepower 3.1 by fuss
If you like my post please hit thanks button...
Click to expand...
Click to collapse
Thank you, I will try it eventually, but I am not sure if my problem is a kernel/ROM issue, and I'm curious to find out what's causing it.
what are others thoughts on some of the pros and cons of this update? i'm thinking it will actually save battery to have wifi 'always on' in standby mode rather than repeatedly switching between a on/off state which uses more energy.
It will definitely eat more battery if it's always on under the lockscreen...
Also there is an option to deactivate notifications when new wifi hotspots are around.. if you are about battery life you should deactivate this..
Ikkari said:
It will definitely eat more battery if it's always on under the lockscreen...
Also there is an option to deactivate notifications when new wifi hotspots are around.. if you are about battery life you should deactivate this..
Click to expand...
Click to collapse
I keep my Wifi always on because it consumes the least battery (vs 3G, LTE, etc).
If I don't play games on my Lumia 920 the battery can last 3 days.
This update is freezing my phone Dunno why but I have tested it. I occasionally get a freeze now and then, but when the keep wifi is on, it is like every couple of hrs... Will test it more though.
Ikkari said:
It will definitely eat more battery if it's always on under the lockscreen...
Also there is an option to deactivate notifications when new wifi hotspots are around.. if you are about battery life you should deactivate this..
Click to expand...
Click to collapse
Wrong unless your phone is using 5-year old wifi chip.
Correct me if I am wrong, but is the wifi on this phone an on demand type system? From what I see on mine, the wifi unless being used for an actual update or downloading other content goes to sleep when the lock screen is on. It then wakes up if there is an update pushed to it or if something else needs it or of course if you unlock the phone. At least that is the way it appears that mine works.
Also your radio service are going to use much more power than the wifi will as they are higher power transmitters and receivers. There is a reason wifi only works within a few hundred feet and radio works for several miles that is due to the power difference. Of course with more power you get more battery consumption.
In the case of conserving the battery you are better off to use wifi when possible, leave it on and let the phone control it.
In my experience keeping Wifi on permanently lead to a remarkable decrease in battery life. That will depend on where you are though. If I have it sitting at home where it has Wifi connectivity it's likely that I would see better battery life because all actual transfers will happen via Wifi. At work though it can't connect to the Wifi network (private phone, work network) and so I have 3G running anyway while the phone keeps looking for Wifi networks to connect to.
The problem boils down to the fact that while you can switch off Wifi completely because everything can still work using 3G you can't switch off the phone part completely because only data is done over Wifi but you still need the mobile connection to receive calls/SMS.
I would suggest to anyone to simply try out what works better for them. For me it worked best to let Wifi deactivate automatically as it had been the default in WP since WP7 came out.
foxbat121 said:
Wrong unless your phone is using 5-year old wifi chip.
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Click to collapse
Maybe Wifi is using less power when you are downloading something and need a lot of data... But when your phone is idle... Constant on Wifi is using far more battery power than 3G that checks for email or weather every 1-2 hours...
Simple enough...if you are consistently in an area with a WiFi signal, leave WiFi "always on"...it will consume less battery. If you're in an area without WiFi signal then turn it off, as searching for a signal will help run your battery down.
Sent from my LG-E970 using Tapatalk 2
Ikkari said:
Maybe Wifi is using less power when you are downloading something and need a lot of data... But when your phone is idle... Constant on Wifi is using far more battery power than 3G that checks for email or weather every 1-2 hours...
Click to expand...
Click to collapse
Again, simply not true unless you are using a 5-year old phone. Even if you are in an area that has no wifi connection, the extra drain caused by searching for Wi-Fi networks is minimum in a modern OS and modern chipset. I have left all my android phones (the ones that offer Wi-Fi always on feature for a few years now) wifi on all the time. Never have felt much difference vs if I turn wifi off. It annoys me that WP didn't offer this capability for so long.
foxbat121 said:
Again, simply not true unless you are using a 5-year old phone. Even if you are in an area that has no wifi connection, the extra drain caused by searching for Wi-Fi networks is minimum in a modern OS and modern chipset. I have left all my android phones (the ones that offer Wi-Fi always on feature for a few years now) wifi on all the time. Never have felt much difference vs if I turn wifi off. It annoys me that WP didn't offer this capability for so long.
Click to expand...
Click to collapse
I tested a lot of phones Android and WP, my experience is that wifi always on is a battery killer... And I'm talking about state of the art hardware... It's just my 2 cent's but i keep it off...
When I don't charge overnight and wifi is always on my battery drops about 40%
with only 3G on about 8-10%
Foxbat: you can leave it any way you want to do it. I'm not saying Microsoft should remove the feature. But in my experience keeping Wifi on kills the battery faster. I tested it for my use case with always on and with Auto and in the end: Auto it was for me.
The best advice you can give to people is: try it out yourself and you will see what works best for you.
A picture or two says it all. See the attached files for my two testing: one with wifi always on for 24-hour and one with Wi-Fi in auto mode for 24-hour:
The right picture shows 0.0%/hour under current discharge rate... pretty impressive
Ikkari said:
The right picture shows 0.0%/hour under current discharge rate... pretty impressive
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The keyword is 'Current' -- means at that moment. You can derive the same thing from the left in various sections. The key here is that I don't see any discernible difference. Certainly not a battery killer in any sense as you claimed.
If you look at the first 12-hour period of both chart (when the phone is mostly sleep and not used), the result is almost identical. FYI, there are three push emails connected all the time: Hotmail, GMail and Corporate Exchange Email.
Yes the keyword 'Current' -- means at that moment... so your phone is not discharging although your screen is on... Very accurate app...
Ikkari said:
Yes the keyword 'Current' -- means at that moment... so your phone is not discharging although your screen is on... Very accurate app...
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So, what you saying is that if you have the screen on, you will see your battery percentage drop immediately? You should return your phone if that is the case.
Battery app get its information from the phone OS reporting. If the OS reported the same battery percentage over a short period of time, the discharge rate won't be anything other than zero. That's limitation of the platform, not app.
Instead of criticize the app which is not the point of the post, why don't you post your findings where leave Wi-Fi always on kills your battery?
it' % per hour... and your phone is using currently using 0,0% per hour so if you leave it like that it will run for ever... so where is the mistake?
Ikkari said:
it' % per hour... and your phone is using currently using 0,0% per hour so if you leave it like that it will run for ever... so where is the mistake?
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% per hour is a unit of measurement. It doesn't mean you have to take one hour to measure it in order to claim its rate. That will be average rate on that hour, not current rate which is meant to see what your current usage pattern is. It can't be used to predict your battery life. If you notice that when you take your phone off the charger, it will stay on 100% for quite some time before it starts to drop. Does that mean your phone battery can last forever? Think about it before post these ridiculous statements.
Foxbat - you are trying to tell us how our devices should behave while we are telling you how they actually behave in the real world out there. You can repeat your 5 years story as often as you want to but it clearly doesn't live up to the factual reality we experience every day and I guess after trying it out with different ROMs on the 920 and leaving all other settings the same I know the effect it had pretty well.
Nice to know though that you are having a different experience with different devices.
having battery drain issue, cell standby and over-counted are the main reasons showing in battery stats. how can i get rid of that? after full charge it takes 4 to 5 hours to plug in the charger again.
What are you showing us here? Looks to me like a mostly idle run over about 12 hours, getting roughly 2% per hour drain. That's a little higher than I usually see, but not horrible depending on conditions, especially if the small amount of use you did have was demanding. How much screen on time are you getting out of a full battery run?
I would suggest getting the app betterbatterystats (search xda) to get a better idea of what your issue is, if you actually have one...
Thanks for the reply. I was trying to say that why stand by time consuming that much percentage? Is that normal while data and wifi disabled? And what is that over-counted thing? As you said stand by time is little higher than normal and depends on condition. What kind of condition you're talking about?
Sent from my LG-E970 using XDA Free mobile app
asadhassan25 said:
Thanks for the reply. I was trying to say that why stand by time consuming that much percentage? Is that normal while data and wifi disabled? And what is that over-counted thing? As you said stand by time is little higher than normal and depends on condition. What kind of condition you're talking about?
Sent from my LG-E970 using XDA Free mobile app
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I've never run with both data and Wi-Fi turned off (I use data for notifications when idle) so that might be higher than expected idle drain. I typically see 1 - 2% per hour drain in that configuration.
In my experience, you'll need to better narrow down the cause of the drain if you want to fix it. It may be due to weak cell signal (though your screen shot shows what appears to be decent signal), or possibly an app that frequently wakes in the background looking for a network connection. If that is the case, having data and Wi-Fi off may actually hurt your battery performance.
Get the BetterBatteryStats app, it will help you narrow down the cause.
No Voice Mail Icon
Great Rom, great battery life. I found couple of bugs.
1. No Voice Mail icon.
2. Screen doesn't come on sometime if using Google Now Launcher and Google Now is ON.
3. Service provider say Bell while I am with Virgin (Actually Bell owns Virgin but something I notice)
4. Back key size( check the picture attached)
Thanks for this great rom. (Liquid smooth 5.0.2 Dec 20)
dandrumheller said:
I've never run with both data and Wi-Fi turned off (I use data for notifications when idle) so that might be higher than expected idle drain. I typically see 1 - 2% per hour drain in that configuration.
In my experience, you'll need to better narrow down the cause of the drain if you want to fix it. It may be due to weak cell signal (though your screen shot shows what appears to be decent signal), or possibly an app that frequently wakes in the background looking for a network connection. If that is the case, having data and Wi-Fi off may actually hurt your battery performance.
Get the BetterBatteryStats app, it will help you narrow down the cause.
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thanks for the advise, i'll get the batterbatterystats app to find out more details about this issue.
dandrumheller said:
I've never run with both data and Wi-Fi turned off (I use data for notifications when idle) so that might be higher than expected idle drain. I typically see 1 - 2% per hour drain in that configuration.
In my experience, you'll need to better narrow down the cause of the drain if you want to fix it. It may be due to weak cell signal (though your screen shot shows what appears to be decent signal), or possibly an app that frequently wakes in the background looking for a network connection. If that is the case, having data and Wi-Fi off may actually hurt your battery performance.
Get the BetterBatteryStats app, it will help you narrow down the cause.
Click to expand...
Click to collapse
codefly said:
Great Rom, great battery life. I found couple of bugs.
1. No Voice Mail icon.
2. Screen doesn't come on sometime if using Google Now Launcher and Google Now is ON.
3. Service provider say Bell while I am with Virgin (Actually Bell owns Virgin but something I notice)
4. Back key size( check the picture attached)
Thanks for this great rom. (Liquid smooth 5.0.2 Dec 20)
Click to expand...
Click to collapse
you're right, this is very good rom and its running smooth with very few bugs but sooner they will fix those bugs
Great rom runi g smooth infact only lollipop rom that is running well on my optimus G keep up the great work