Many people report that battery drain after upgrade their Nexus S to android 4.0.4. So the main reason for that is our android 4.0.4 leaves wifi on even when the phone is sleep.
How to fix: Go to Settings -> Wi-Fi -> Advanced -> Keep Wi-Fi on during sleep -> change it to "only when plugged in" or "never"
And now, my phone's battery can last more than two days
I have found that keeping the WiFi on always actually improves my battery life. This is especially true when there is a weak signal (like in the basement of my house).
With WiFi always on, I get minimal drain (maybe 20% for the entire day) with the standard battery. Without that, I was able to maybe 16 hours before the battery was entirely dead.
How is this any different than just turning Wi-Fi off if you aren't in range?
pmcneil said:
I have found that keeping the WiFi on always actually improves my battery life. This is especially true when there is a weak signal (like in the basement of my house).
With WiFi always on, I get minimal drain (maybe 20% for the entire day) with the standard battery. Without that, I was able to maybe 16 hours before the battery was entirely dead.
Click to expand...
Click to collapse
+ 1
kerry_xu_cs said:
Many people report that battery drain after upgrade their Nexus S to android 4.0.4. So the main reason for that is our android 4.0.4 leaves wifi on even when the phone is sleep.
How to fix: Go to Settings -> Wi-Fi -> Advanced -> Keep Wi-Fi on during sleep -> change it to "only when plugged in" or "never"
And now, my phone's battery can last more than two days
Click to expand...
Click to collapse
Worth a try... let see!, thanks.
pmcneil said:
I have found that keeping the WiFi on always actually improves my battery life. This is especially true when there is a weak signal (like in the basement of my house).
With WiFi always on, I get minimal drain (maybe 20% for the entire day) with the standard battery. Without that, I was able to maybe 16 hours before the battery was entirely dead.
Click to expand...
Click to collapse
it doesn't sound like reasonable
If there is wifi network available you should ALWAYS connect to it as opposed to cellular data. Does not matter whether screen is on or off. If you got wifi available use it at all times.
glad someone opened a thread to state the obvious
I find wifi drains significantly more battery than when on the 3G data connection.
How does this help when I'm out in the world with wifi off?
Sent from my Nexus S 4G using Tapatalk
What if Android System itself was the main reason why my battery is terrible?
Sent from my Nexus S using XDA
pmcneil said:
I have found that keeping the WiFi on always actually improves my battery life. This is especially true when there is a weak signal (like in the basement of my house).
With WiFi always on, I get minimal drain (maybe 20% for the entire day) with the standard battery. Without that, I was able to maybe 16 hours before the battery was entirely dead.
Click to expand...
Click to collapse
I agree, having wifi off would end up using cellular data, a very quick and fast drain on the battery. If you have wifi most of the time then this shouldn't be disabled, I found that having wifi on all the time actually helps improve battery life since my phone doesn't hog onto the cellular data network. I am around wireless most of the day & night, so I end up using more of WIFI.
This particularly makes sense during the nights, when the phone is hooked onto wifi instead of cellular data.
My dads nexus runs stock unrooted 4.0.4 and he got 2.5 days of battery life from a full charge.. (mobile data on the whole time and wifi to update some apps. Ill try to make a photo if he gets home tomorrow. ( i checked this evening and it was at 29% (2 days and 19hours on battery)
Sent from my Nexus S using xda premium
People get those outrageous hours of use because they don't use the phone..I had to switch to my sensation the battery is so bad..my wife knows nothing about phones and she keeps saying after she updated to 4.0.4 the battery is absolutely horrible.**
Sent from my HTC Sensation 4G using XDA
+ delete GooglePlus.
I think one of the main real culprits for short battey life is the android os bug.. I have android os using more battery than the screen and I had the screen on for at least a hour and a half... quite impossible under normal circumstamces..
Sent from my Nexus S using XDA
Turn off your phone. DUH
kyokeun1234 said:
What if Android System itself was the main reason why my battery is terrible?
Sent from my Nexus S using XDA
Click to expand...
Click to collapse
Sent from my Nexus S 4G using xda premium
pmcneil said:
I have found that keeping the WiFi on always actually improves my battery life. This is especially true when there is a weak signal (like in the basement of my house).
With WiFi always on, I get minimal drain (maybe 20% for the entire day) with the standard battery. Without that, I was able to maybe 16 hours before the battery was entirely dead.
Click to expand...
Click to collapse
+ another 1
Sent from my Nexus S 4G using Tapatalk
What is the point using smartphone without internet connection?
Sent from my Nexus S using xda premium
Or use battery saver apps, like GreenPower, which you can set to only sync your email and/or apps once every 15 mins./30 mins./1 hr./etc. You can also set it to "Night mode" and schedule it to automatically turn off WiFi and Data connections during a certain period (I set mines at 12am to 7am, so I won't be bothered during sleep with any email and/or app notifications... and also save my NS' battery).
Related
I am posting for a friend that has a SNS. The couple of days he has been draining the battery in about 6 hrs. I looked at the battery usage and it said that the display was at 60% and the graph shows a constant fail of power. I checked and he has the screen set to auto brightness and the screen times out at one minute. The only other thing that I cna think of is that he has poor cell coverage but we are using wifi in that location which his phone is connected to. I understand that poor cell coverage causes power drains but with the major of his data going through the wifi one would think that the cell power drain would be minuscule. Thanks in advance.
It depends on how weak. Data is not going to route over the cellular network, but it will try to maintain a connection for things like calls. Thus the phone will attempt to maintain a connection to the tower unless airplane mode is enabled or the cellular radio is otherwise disabled.
If the signal is really weak then the gain is going to be automatically adjusted to try to boost the signal - this is going to cause an increase in power used, sometimes substantially. If you spend most of the day in this situation then you don't have many options currently if you want to receive calls on the phone (you could look at a SIP solution).
If you don't care about receiving calls just turn on airplane mode and then toggle wifi on.
Smurph82 said:
I am posting for a friend that has a SNS. The couple of days he has been draining the battery in about 6 hrs. I looked at the battery usage and it said that the display was at 60% and the graph shows a constant fail of power. I checked and he has the screen set to auto brightness and the screen times out at one minute. The only other thing that I cna think of is that he has poor cell coverage but we are using wifi in that location which his phone is connected to. I understand that poor cell coverage causes power drains but with the major of his data going through the wifi one would think that the cell power drain would be minuscule. Thanks in advance.
Click to expand...
Click to collapse
You need to provide screen on time and awake time. If he just got the phone and is using it a lot.... well then six hours is not bad for an android phone.
Sent from my Nexus S using XDA App
matt2053 said:
You need to provide screen on time and awake time. If he just got the phone and is using it a lot.... well then six hours is not bad for an android phone.
Sent from my Nexus S using XDA App
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Click to collapse
Not really. Maybe 6 hours continuous use, something like 3 hours display at 20-50% and 3 hours talk time; that would be normal. But 6 hours low-medium use points out that something is indeed wrong.
lambda30 said:
Not really. Maybe 6 hours continuous use, something like 3 hours display at 20-50% and 3 hours talk time; that would be normal. But 6 hours low-medium use points out that something is indeed wrong.
Click to expand...
Click to collapse
But like I said we don't know if it was normal or heavy use without screen on time and awake time.
Sent from my Nexus S using XDA App
Set the Phone to GSM Auto (PRL)
Sent from my HTC Desire using XDA Premium App
Smurph82 said:
I am posting for a friend that has a SNS. The couple of days he has been draining the battery in about 6 hrs. I looked at the battery usage and it said that the display was at 60% and the graph shows a constant fail of power.
Click to expand...
Click to collapse
60% display means the phone was on and actively used for over 3 hours. That's a fair bit but isn't too much really, but it depends on what else is running durng that time. As mentioned, awake time is also important because it means the phone is actively working at something even though the screen is off. He may have a rogue app that he installed sucking power. Or simply leaving the web browser on a webpage with a regular refresh cycle will cause the browser to continue to run in the background keeping the phone awake while the screen is off. I've gotten in the habit of going back to the google home page when I'm done browsing to make sure it's on a "dead" page.
Anywho, more details are needed to figure it out. Just saying it's only using 60% display isn't enough to find out why the phone only lasts 6 hours. Mine lasts between 24-48 hours depending on usage from heavy to moderate. With light usage I figure the battery would last 3-4 days, but I'm not that light of a user and I generally top up every night anyway as it's better to top up a Li-Ion battery than let it run down all the time.
zomfgitsDace said:
Set the Phone to GSM Auto (PRL)
Click to expand...
Click to collapse
My Nexus S on Rogers was already on that setting out of the box. I'm curious, what does that do?
bfksc said:
60% display means the phone was on and actively used for over 3 hours.
Click to expand...
Click to collapse
Huh???
When it says "What's been using the battery" and it says "Display........ 60%"
that just means that the display is responsible of 60% of the battery drain that has occurred since last boot.
For example, if you were at 100%, then turned your phone on for 5 minutes and scrolled back and forth on homescreens, lets say your batter went down to 95%. Well, if 2.5% of that 5% loss is from display, and 2.5% is from Android System, then when you check the battery screen it's going to say "What's been using the batter?"....... Display - 50%; Android system - 50%.
If you did the same thing for 4 hours, and the battery drained down to 20%, you might still see...... Display 50%, Android system - 50%.
In other words, the % has nothing to do with how long the phone has been on.
also if screen on time is 3 to 4 hours, yes the battery will be very low by then.
Thank you all for the advice. As I said this is my friends phone. i don't see him using it a lot we are both programmers so we use a computer for most everything, and we have both our phones on wifi because of the terrible cell signal. I will ask him to try and keep up with everything he does to see his use patterns to see how much he is really using the phone. I will post later on what apps are running and his amount of use. The main reason I am not sure is because this has just started happening with in the last week. We have been in the same location for 6 months and it has just now become a problem.
bfksc said:
My Nexus S on Rogers was already on that setting out of the box. I'm curious, what does that do?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=675136
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zomfgitsDace said:
http://forum.xda-developers.com/showthread.php?t=675136
Click to expand...
Click to collapse
Hmm...ok that kinda helps, but it doesn't really explain what's happening when it uses that setting. I know that PRL means preferred roaming list, and GSM Auto means it selects automatically, but how it selects and why it uses less battery is what I want to know.
I kno a lot of people are getting poor wifi reception.. if u find its constantly low and/or switching to 3g it will kill the battery. Its best to switch it off an use 3g or get closer to the router. I've jus recently discovered this is the reason for my crap battery life. Give it a go guys and see if I'm rite
Sent from my GT-I9100 using XDA App
As per multitude of posts turn off wifi when screen off in wifi settings advanced .
jje
JJEgan said:
As per multitude of posts turn off wifi when screen off in wifi settings advanced .
jje
Click to expand...
Click to collapse
That's what I always had it set to, but I've seen a ton of threads here and elsewhere which say it's better to just leave the wifi sleep policy to never.
Seem counter intuitive, but apparently it saves more battery life...
funny discovery today, switched on wifi sharing for a while and the battery drain massively( 5% per 10mins). Switched it off and the drain continued, for some reason my computer could still see the wifi spot even though it was off?
rocketpaul said:
funny discovery today, switched on wifi sharing for a while and the battery drain massively( 5% per 10mins). Switched it off and the drain continued, for some reason my computer could still see the wifi spot even though it was off?
Click to expand...
Click to collapse
I froze the wifi sharing in titanium backup, and the cpu useage went down from 46% to around 5%! It was fine on KE2, this seems to have happened when I went to KE7.
Sent from my GT-I9100 using XDA Premium App
I don't get that much battery drain on wifi
Don't know if it falls under the same as wifi sharing... but today I turned wifi off using the toggle button and my battery is alot better.
Its been near 6 hours since unplugged and its had a fair amount of use today as its been shown of to alot of people at work....and in 6 hours my battery has only dropped to 82%...
I used to leave wifi on all the time on my desire hd...with no discernable battery loss....bit I shall be actively turning it off when not in use on my sgs2 as since the difference is massive
My testing yesterday was giving me around 4% an hour drain with my phone sat doing nothing with the screen off!
With wifi toggled off thats dropped to 3% with medium/heavy use
Anyone noticing any changes with their battery life after the EC03 update? I feel like my battery is draining much faster now.
Under the battery use tab this is what I'm seeing now..
Display - 67-85%
Android system - 9%
Android OS - 8%
Cell standby - 4%
Phone idle - 1%
What is everyone else seeing? Maybe I'm just using it more now but I dont feel like I am.. =)
My battery is actually a little better
Sent from my SCH-I400 using XDA App
jaizero said:
Anyone noticing any changes with their battery life after the EC03 update? I feel like my battery is draining much faster now.
Under the battery use tab this is what I'm seeing now..
Display - 67-85%
Android system - 9%
Android OS - 8%
Cell standby - 4%
Phone idle - 1%
What is everyone else seeing? Maybe I'm just using it more now but I dont feel like I am.. =)
Click to expand...
Click to collapse
download a battery calibration app and run it. i did this and it's been better for me
I feel like mine is draining faster too but I'm also using it more so hard to tell.
Sent from my SCH-I400 using XDA App
The icon seems to drain fast but batt life ok in area w/good signal.... w/o good signal seems to drain fast yah
sent from my XDA phone - its more than a continuum
When in use I've noticed a slight bump in battery life, but when "locked/sleeping" I've noticed a big difference. On Eclair I would lose anywhere from 20-40% of battery and now it's more like 10%. Settings and apps are the same or similar AFAIK.
my battery life actually improved
All i did was lower the brightness to its lowest setting, lowered system volume, took for vibrating feedback when buttons are pressed, and i turn off mobile data when i know im not going to use it long periods of time.
Sent via Carrier Pigeon
my Battery life
My battery life is dramatically improved. I haven't bothered to look at stats, but I've not used my phone any less, and probably slightly more. Where my battery was lasting maybe 6 hours before, it's consistently at about 14-18% after 12 hours now. There is one way I've found to kill my battery, and that's running navigation. Other than that, it's much improved.
Here are the apps I AM running
bluetooth, GPS, Sync/auto update
tweetcaster
facebook
weatherbug
android central updates
Widget Locker
EasyTether
Lookout
ADWNotifier
Pageonce
and probably a couple of others in the background. I have a nasty habit of just hitting the home button, instead of backing out of apps like I should.
Yes I saw a huge drop on the battery drain, but only when mobile data was enabled. I'm thinking there is something wrong. Im using "batteryminder" and I get less battery with mobile data than i get running wifi. ??? any thots?
Do you have wifi set to always on, so that whenever you turn off your screen it doesn't have to waste battery switching back to 3g?
Sent from my SCH-I400 using xda premium
Okay so let me get this straight...
Enable wifi always on and 3g will only kick on when no wifi available?
I only see a big battery drain when 3g is enabled and wifi is off.
If I'm outside of wifi coverage though (which is most of my day) battery only lasts for 5 to 6 hours.
Disabling 3g bumps it up to 15 hours
Sent from my SCH-I400 using XDA App
I have noticed my battery life has improved after flashing stock EC07 over Joshkoss's ROM.
Sent from my Continuum on stock Froyo 2.2.2.
Ill have to give that a shot
Sent from my SCH-I400 using XDA App
Reading through threads I see lots of people saying JD and similar apps are good and lots saying they are bad. This is quite confusing for someone who just wants to get good battery life. In my experience I have gone from finding it good to finding it bad. I will try and explain why this occurs so that people are able to decide if it will be worthwhile for them.
First install Battery Monitor Widget and find out what sort of drain your battery is experiencing every hour.
With a stock rooted G2 with data connection on continually (no wifi) I was getting around 80-150 mA which explains why it would not last longer that about 16 hours. Most of this drain seems to occur from data connections. After installing JD or something similar the drain can be reduced to around 50 mA. Which is great, suddenly you get the claimed 1.5 to 2x battery life. JD seems great.
But after you install a good ROM and custom kernal, remove or freeze all the apps that keep using your data connection unnecessarily and install Better Battery stats you observe that JD stops the phone going into a proper deep sleep. If you dump it the drain on the phone drops to very low numbers usually under 20mA sometimes 5mA or even 2mA. This means you use around 1-3% of the battery life of the phone overnight with no changes. Now your phone can last days between charges. Note this is with Data or Wifi connections turned on and Sync active always.
Summary:
On a badly set up phone JD improves battery life (for the lazy)
On a well set up phone JD worsens battery life (takes some time)
Note: I got the best results using Speedmods kernal but I have no reason to think that other kernals could not get similarly low battery drains.
Thanks for sharing your observations. I have juice defender and have had similar findings. The wake locks jd causes play into the aos bug of the phone which is why it can make things worse on a well set up phone (the extra drain from the wake locks outweighs the savings from turning the data connection off when it's not in use). If not for the aos bug it would probably be good in all cases. I had noticed this in my testing and am glad to see I'm not the only one.
Sent from my GT-I9100 using xda premium
Thanks for sharing your observations.
If I had seen your post much earlier than I wouldn't have to buy JD. Anyway, I have gone through the hard way, and learnt how to keep my phone organized and minimized rouge apps issue. JD is pretty much useless now.
IMHO, I think Battery monitor widget pro seems to be a much better buy
Thanx for this helpful info!
BTW, kernel not kernal
I do not have a lot of widgets and sync as little as possible. Mail sync is only on demand (when I have time to read it), and Weather is every 6 hour (disabled in night time).
So my battery live is good ½% standby and with normal use it can easily last a full day (no gaming, just Internet, Talk, SMS).
I decided to try JD in order to save even more juice, but JD ended up using more battery than it saved me!
So I can confirm that JD is good for the "lazy user" and bad if your aware of your sync. and how your apps behave.
What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
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best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises
KurskS said:
What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
Click to expand...
Click to collapse
By 'dump' I just meant uninstall JD. If you uninstall JD your phone will be able to deep sleep properly provided it is set up well and you actually save more battery.
foxcheng said:
best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises
Click to expand...
Click to collapse
Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.
razar77 said:
Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.
Click to expand...
Click to collapse
What kernel , Rom and apps (that sync) are you using?
Sent from my GT-I9100 using Tapatalk
So... I was getting 4 1/2 hours on auto brightness... Now this is from 100% charge and me turning auto brightness off and setting the brightness at 0...
No heavy gaming, strong signal...
I have heard that deep cycling this battery is not recommended but this is BAD... I am totally stock running T-Mo .11 firmware.
I am tempted to deep cycle but I've seen people do that and the battery goes kaput for good so I don't know.
Sent from my HTC One using Tapatalk 2
And as you can see, power saver is on as well. Something isn't right...
And the WiFi radio is so atrocious that I always use mobile data so that isnt it...
Sent from my HTC One using Tapatalk 2
looks normal app usage 95% but i thought you would gain more battery if brightness is at 0
use grenify and to limit app usage as i'm guessing you have a lot of unnecessary apps calling for data in background
and 4g is known to drain use wifi when possible
If you think that's bad see my battery life, it's atrocious. In standby overnight, my battery drains about 9%, worse than my old iPhone 4. I can barely get 3.5 hours of screen on time. But I still love the phone though.
Sent from my HTC_PN071 using Tapatalk 4
zFayZz said:
looks normal app usage 95% but i thought you would gain more battery if brightness is at 0
use grenify and to limit app usage as i'm guessing you have a lot of unnecessary apps calling for data in background
and 4g is known to drain use wifi when possible
Click to expand...
Click to collapse
The problem is that the WiFi antenna in the One is so bad that I die at 3 hours. And if I go in the bathroom, the phone freezes of I get a call.
There are some serious radio bugs with this device. Like the 45 second handshake from 4G to LTE (S4 is 5 seconds max) - doesn't usually cause a problem but for some reason T-Mobile drops from LTE to 2G within 10 seconds on the phone unless it is locked to WCDMA only in my area (we are blanketed in HSPA here in Denver, we are two blocks from the Capitol!) but then takes 30 seconds after a call to go on HSPA then another 45ish to get back on LTE, sometimes 2-3 minutes!
As for WiFi, both my S3 in an Otterbox Defender and my old S4 (given to roommate,long story) get WiFi all the way to the elevator. The One can't even make it to the toilet :/
Sent from my HTC One using Tapatalk 2
Moderator Update,
Thread has been closed as there is an existing thread for battery issues here.
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