Database Info

My battery usage record today

unrooted phone, installed the battery widget dl from HTC
8:30am unplug in , check the news, battery 97%
turn off wifi,and internet
9:56am 92%
Listen music with earphone
11:27am 85%
stop music, turn on internet, no 4g signal, only 1X, leave it then standby
11:45am 80%
Turn off internet, standby,
one short call in one short call out
12:44 78%
standby
1:46 77%
turn on internet, find 4GLET, read books online
2:19 68% turn off 4g, stand by most of the time
2:36 67%
is it normal?

That sounds like what I have right now.
My phone is rooted and I have it unplugged since 9AM. It is now 3PM and down to 50%. This is what I did:
Bluetooth Headphone + music for about 1hr
Downloading apps + updating + reinstalling + backups + uploading for about 30 min
Texting + a few emails + fruit ninja + angry birds + GBA emulator for about 30 min
I'd save more battery if it wasn't for the data+CPU intensive activities.

Goto the verizon store and talk to the manager. Tell him to push the hybrid prl to your phone. Mine is 13006 & battery is at 80% (off charge 6am) at 3:34pm. Looks like a major fix for me and the wife's thunderbolt.
Sent from my ADR6400L using XDA Premium App

Try Battery Monitor Widget. I was surprised to see that my phone uses significantly less power while idle on 3G than connected to WiFi.

hammer4203 said:
Goto the verizon store and talk to the manager. Tell him to push the hybrid prl to your phone. Mine is 13006 & battery is at 80% (off charge 6am) at 3:34pm. Looks like a major fix for me and the wife's thunderbolt.
Sent from my ADR6400L using XDA Premium App
Click to expand...
Click to collapse
I spoke. With corporate about that, tier 2. They said prl updates automatically on boot and the is no way to push a specific version. They also said prl is for voice roaming in non VZW covered areas and isn't related to the 4g radio, as only VZW towers support LTE.
Sent from my ADR6400L using XDA App

What does your usage look like? If I just open up my phone for emails and text (very light usage), I lose about 10% every 4 hours or so. Also I think you can edit your tower preferences by dialing " ##778# " . I'm not sure if it's the same but sounds quite similar.
hammer4203 said:
Goto the verizon store and talk to the manager. Tell him to push the hybrid prl to your phone. Mine is 13006 & battery is at 80% (off charge 6am) at 3:34pm. Looks like a major fix for me and the wife's thunderbolt.
Click to expand...
Click to collapse

cuguy said:
What does your usage look like? If I just open up my phone for emails and text (very light usage), I lose about 10% every 4 hours or so. Also I think you can edit your tower preferences by dialing " ##778# " . I'm not sure if it's the same but sounds quite similar.
Click to expand...
Click to collapse
What are tower preferences exactly, and what would they do to help battery life?

The reps on the phone are full of it! I have been on the new prl and it doesn't change when I reboot or bsttery pull. It has something to do with wether or not you are in an area that use to be alltel. If u goto the store they should know what ur talking about. If not have them call the Hattiesburg, MS store.
Sent from my ADR6400L using XDA Premium App

wow, i unplugged my phone at 5AM. It's now 1030AM and i'm down to 32% battery. Sent 4 texts and checked email twice. THATS IT. What the hell is wrong with my battery!!!!!

stoneskin2 said:
unrooted phone, installed the battery widget dl from HTC
8:30am unplug in , check the news, battery 97%
turn off wifi,and internet
9:56am 92%
Listen music with earphone
11:27am 85%
stop music, turn on internet, no 4g signal, only 1X, leave it then standby
11:45am 80%
Turn off internet, standby,
one short call in one short call out
12:44 78%
standby
1:46 77%
turn on internet, find 4GLET, read books online
2:19 68% turn off 4g, stand by most of the time
2:36 67%
is it normal?
Click to expand...
Click to collapse
Actually yeah that does sound about normal. There are of course alot of variables when it comes to battery life. What you actually use and leave running, how much and how often you use it and of course how strong a signal you might have or not have.
I get better battery life than that however there are a number of things I remove from my phone that I do not use and I shut just about all syncing off. Naturally that will make a difference.
I see so much about battery life on our phones and what confuses me is what do people expect? Really these smartphones are just about like walking around with a laptop in your pocket. How much time of continuous use can one expect to get out of that? I know most laptops you would get maybe a few hours of use on the standard batteries after a few months of use. I guess thinking of it like that are we really doing that bad?
Sure I'd love to see a battery that will last 2 days and I can use my phone constantly but at least at this point and time that simply not going to happen.
I know you are not complaining here but I just wanted to vent a little bit lol

mojonation1487 said:
wow, i unplugged my phone at 5AM. It's now 1030AM and i'm down to 32% battery. Sent 4 texts and checked email twice. THATS IT. What the hell is wrong with my battery!!!!!
Click to expand...
Click to collapse
you have to have something running constantly on that phone. might want to pick up a app in the market and check what is running that thing like that. system monitor is one app and there are others as well. either that or you just have a bad battery but not likely

LeoD said:
you have to have something running constantly on that phone. might want to pick up a app in the market and check what is running that thing like that. system monitor is one app and there are others as well. either that or you just have a bad battery but not likely
Click to expand...
Click to collapse
Thats the thing, I only have gmail syncing and weather syncing once an hour. I'll download that app and see whats up. This phone is pissing me off
EDIT- What app is it? I can't find a system monitor in the market

Try watchdog lite. Just don't set it to update constantly, it'll eat your processor if you do.
Sent from my ADR6400L using XDA App

mojonation1487 said:
Thats the thing, I only have gmail syncing and weather syncing once an hour. I'll download that app and see whats up. This phone is pissing me off
EDIT- What app is it? I can't find a system monitor in the market
Click to expand...
Click to collapse
System panel or that watchdog would work I've only used system panel tho

mojonation1487 said:
Thats the thing, I only have gmail syncing and weather syncing once an hour. I'll download that app and see whats up. This phone is pissing me off
EDIT- What app is it? I can't find a system monitor in the market
Click to expand...
Click to collapse
Okay, I know I'm not from the TB side as I have an Evo, but one thing to keep in mind is that if you leave 3g/4g turned on, it constantly tries to find a superior signal. Use wifi where available. Also, turn 3g and 4g off when you don't need them, and don't leave stuff set to sync on its own. Other things that can be done to improve battery life are lowering your screen brightness and adjusting the screen timeout/sleep interval. The lower each of these are set, the more battery you will save. If your screen is always on, it's constantly drawing battery, obviously. Also, in my experience, the HTC charging kernels have a tendency to be a bit finicky when it comes to charging 90-100%. Sure, your phone may show 100% charged, but if you pull off the charger and it drops 3-8% in the course of 5 minutes, it clearly wasn't 100% charged to begin with.
However, if you meant to say that you were following these guidelines and still having this issue, I would say you very well may have a defective/weak battery.

root your phone and download imoseyons leankernel.
i can get over 24 hours of battery time pretty easily as long as i'm not using it heavily, and that's with an overclocked cpu to 1.4 ghz.

i have been turning APN off via extended controls and my battery life has gone to bearable to good! I am really happy about it b/c the widget works perfectly and turns on and off in virtually seconds, and completely turns off all radios other than the one for calls and texts.
So until I have root and am able to adjust the battery life in that way this is working great.

here's mine on das bamf 1.2 and ziggy's april 6th kernel at 1497/368 on smartass governor w/ 2750 battery...mediaserver was me streaming mecanto over 3g for 4-5 hours, also used pandora over 3g, but only for an hour or so...no wifi used in the last day..radio set to cdma auto so it doesnt look for 4g.
brightness and sync on whatever I want, I keep beautiful widgets at 15 minute update, not sure anything else syncs...mail seems to sync when I switch to the screen with the mail widget or whenever I open the mail or gmail app..
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mojonation1487 said:
wow, i unplugged my phone at 5AM. It's now 1030AM and i'm down to 32% battery. Sent 4 texts and checked email twice. THATS IT. What the hell is wrong with my battery!!!!!
Click to expand...
Click to collapse
Yea, I just posted on another board that I will not be able to stay with this phone. Im going to have to shell out 600-700 for an off-contract Bionic. My phone was 100% at 7AM this morning.. After sitting in the car all day at work, 10 hours later, it's down to 75%. I figure that's not bad.
Well in the 4 hours since Ive been off work, Ive made ONE 30min phone call and sent 20 texts. The phone is dead. Didnt do any surfing. One call, twenty texts.
This is unacceptable.
EDIT: Yes, I checked the partial wake usage and nothing is running in the background. I have nothing syncing either. There's only like 5 things in the battery info screen.. Phone call, Display, Phone Standby, Cell Idle, Android System, and Android OS. The single 30 minute voice call accounts for 47%, 30 minutes of Display is 21%, and the idle and standby are the rest.

ive called verizon about the hybrid prl they just lol its an auto update they cant just push it to your phone maybe your in a 4g lte area but im not

High mA=low battery

I think I've figured out what's killing my battery and wanted to post this for others. I've tried several roms and multiple batteries, but kept losing 14% or more per hour.
I downloaded Battery Widget Manager from the market to take a look at the mA consumption over time. Here's what I noticed, my phone is/was consuming too much power even when idle. With the screen off and 4g on, the mA rating was regularly in the 350-475 range. My friend has a Charge and I downloaded the same widget on his phone, in the same environment, and his idle mA was between 35 and 150! He's easily getting 18 hours out of his phone, and I'm lucky to get 7.
So here's the strange part, I downloaded a new rom and the pbj kernel, and for the first day, my mA always stayed between 35 and 150 when the phone was idle. Accordingly, I got amazing battery life of around 18 hours with 4g on.
This morning, however, my phone won't go below 450 mA in an idle state, despite being in the same environment. I've restarted and even turned off mobile networks. My battery is dying at about 16% an hour.
I'd like to see if others are having the same problem with their phones. To test this, download the battery monitor widget and track the mA usage using the log feature.
Curious if someone can diagnose why my phone suddenly won't go below the 450 mA mark.
Sent from my SCH-I510 using XDA App

I would make a backup and do a factory reset/ data wipe. Don't install any apps and see if the mA comes down. If you are still seeing high mA either reflash rome and kernel, or flash one of the stock roms. If it is still high, take it back and ask for a new one.
If the factory reset corrects the problem, start adding apps back one at a time to see which ones are contributing to your high drain.
Just what I would do, maybe someone else has a better idea.

hoppermi said:
I would make a backup and do a factory reset/ data wipe. Don't install any apps and see if the mA comes down. If you are still seeing high mA either reflash rome and kernel, or flash one of the stock roms. If it is still high, take it back and ask for a new one.
If the factory reset corrects the problem, start adding apps back one at a time to see which ones are contributing to your high drain.
Just what I would do, maybe someone else has a better idea.
Click to expand...
Click to collapse
What's strange is I've already been on several different ROMS, including stock. When I first flashed this ROM about 2 days ago, the mA was completely normal, but today, it has spiked again and consistently stays too high. I've tried a different battery, killed every single app running, but to no avail.
Why does each ROM start off fine and then have a problem a day or two later? Conversely, if the hardware is the real problem, why doesn't the current spike ALWAYS happen?
I would've guessed an app is affecting it, just like you said, but I used a task killer to turn them all off, and the mA stayed too high. Additionally, I used Spare Parts to see what was eating CPU and Network and nothing was standing out. Isn't that odd?
I bought the phone on Ebay, would I still be able to bring it back to a Verzion store and get a replacement since I'm not the first owner. I'm not convinced there's something wrong with the phone.

What does your phone say is actually using most of your battery? (Settings->About Phone->Battery Use)
And what's your "Time without signal?" (In Battery Use, hit "Cell standby")
Also, task killers don't work on Froyo or above like they did on Eclair -- tasks just restart themselves in the background automatically if they're closed now. The only way to permanently stop something from backgrounding is to uninstall it.

Falcyn said:
What does your phone say is actually using most of your battery? (Settings->About Phone->Battery Use)
And what's your "Time without signal?" (In Battery Use, hit "Cell standby")
Also, task killers don't work on Froyo or above like they did on Eclair -- tasks just restart themselves in the background automatically if they're closed now. The only way to permanently stop something from backgrounding is to uninstall it.
Click to expand...
Click to collapse
Display is the biggest user of battery @ 93%
Time without signal isn't available because I just unplugged my phone...
But even after just restarting I've dropped 7% of my battery in 10 minutes.

I experienced an identical situation until today. Guess what fixed it? Removing Battery Monitor Widget! Seriously. Check CPU Spy. You'll see it never goes into deep sleep if you let Battery Monitor Widget run in the background or put its widget on your screen. Deleted the widget and CPU Spy immediately started logging deep sleep time. You can still use the monitor to check up on live stats, just don't let it run in the background or install the widget.
Sent from my SCH-I510 using XDA App

bgorrell said:
I experienced an identical situation until today. Guess what fixed it? Removing Battery Monitor Widget! Seriously. Check CPU Spy. You'll see it never goes into deep sleep if you let Battery Monitor Widget run in the background or put its widget on your screen. Deleted the widget and CPU Spy immediately started logging deep sleep time. You can still use the monitor to check up on live stats, just don't let it run in the background or install the widget.
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
I've been running the phone with Battery Monitor Widget for two days without any issue. Don't think that's the problem or I'd have experienced this immediately after installing it.

bgorrell said:
I experienced an identical situation until today. Guess what fixed it? Removing Battery Monitor Widget! Seriously. Check CPU Spy. You'll see it never goes into deep sleep if you let Battery Monitor Widget run in the background or put its widget on your screen. Deleted the widget and CPU Spy immediately started logging deep sleep time. You can still use the monitor to check up on live stats, just don't let it run in the background or install the widget.
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
Also, I understand how to delete the widget, but how do you ensure it's not running the background?

I tested this twice and both times I experienced a big battery drain after installing battery monitor widget.......went away once I uninstalled it

In the settings menu for battery monitor widget, ensure "monitoring without widget" is not checked. Then, when you are done with the app, use the back button to exit. It will tell you to press back again to stop monitoring. If it doesn't say this, it keeps running in the background.
You wouldn't know it is preventing deep sleep BTW unless you check it with CPU Spy (available in the market). I don't know if you are familiar with it, but it shows what percentage of time the CPU is spening at each speed. Deep sleep is the lowest state. If this state isn't used, the only symptom will be the battery drain.
You can easily confirm the issue by checking CPU spy with and without battery monitor widget running. Reset CPU Spy timers before each test. Deep sleep time should be logged after you lock your device for a minute or so.
Sent from my SCH-I510 using XDA App

I am have the same problem. I will see one day that will be great, and the next day I will have around 7 hours. I am running debloated EE4, but I have not tried to calibrate te batteries either.

So indeed, it was the battery monitor widget running in the background that was eating battery. But now that I've fixed that, there's something else eating my battery. In Spare Parts, it says that Dialer is the largest user of my network. I've talked on the phone for a grand total of 15 minutes today, so why is dialer eating up so much data? Of course, the huge data consumption is draining my battery quickly. Any suggestions?
Sent from my SCH-I510 using XDA App

Yes, my phone says that too, and it always has. My battery life is fantastic, so that is clearly not an issue for me. I really believe that your issue lies elsewhere.

But how can this make any sense? Why would Dialer be using mass amounts of data? Logically, if it's consuming data when I'm not making calls then it's draining power to use this data.
Can anyone else explain the Dialer is doing this?
Sent from my SCH-I510 using XDA App

Stockmoose16 said:
But how can this make any sense? Why would Dialer be using mass amounts of data? Logically, if it's consuming data when I'm not making calls then it's draining power to use this data.
Can anyone else explain the Dialer is doing this?
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
Just how much data does it say it is using? Just because its at the top of the list doesn't necessarily mean it's consuming a large amount of data.

BeefJerky9 said:
Just how much data does it say it is using? Just because its at the top of the list doesn't necessarily mean it's consuming a large amount of data.
Click to expand...
Click to collapse
My phone has been unplugged for 5 hours and I've made zero calls, but dialer states I've received 10 mb of data.
In comparison, the next highest network usage belongs to Touchdown. I've received almost 40 emails and it's only used 1 mb. How can dialer NOT be a problem?
Sent from my SCH-I510 using XDA App
Sent from my SCH-I510 using XDA App

That doesn't seem right. you may want to reboot and see if the behavior goes away.
Sent from my SCH-I510 using XDA App

Stockmoose16 said:
My phone has been unplugged for 5 hours and I've made zero calls, but dialer states I've received 10 mb of data.
In comparison, the next highest network usage belongs to Touchdown. I've received almost 40 emails and it's only used 1 mb. How can dialer NOT be a problem?
Sent from my SCH-I510 using XDA App
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
I am in the same situation. My dialer is also using the most network resources. I use Go Dialer. I wonder if that could be the cause. I'll delete it and see if it makes a difference.
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Stockmoose16 said:
My phone has been unplugged for 5 hours and I've made zero calls, but dialer states I've received 10 mb of data.
In comparison, the next highest network usage belongs to Touchdown. I've received almost 40 emails and it's only used 1 mb. How can dialer NOT be a problem?
Click to expand...
Click to collapse
Yes, my phone did that when it was stock, as well as now that it is rooted. It is normal, and nothing to worry about. I will repeat again: you are barking up the wrong tree; the dialer data usage is not the cause of your bad battery life. However, if you'd like to continue trying to figure out this non-issue, be my guest.

My drainage is deep sleep its 50% any fixes?
Edit:
I take that back it just jumped to 60%.
Sent from my gummy charge.

[Q] Battery life. SKYICS rc7.3 ~ 9 HRS 43 MIN max charge.

I've had my skyrocket for about a month now, and I've had horrible horrible battery life compared to all of you guys on here. I've tried reflashing, did the whole .3e recovery/ wipe/ fresh install tutorial that Seanz posted. (Amazing rom by the way.)
Nothing seems to work. I've calibrated my battery at least 4 different times. Oh, and for Seanz, You say your rom is 2.3.5, but in my settings it says 2.3.6. My brightness is all the way down, My data, bluetooth, gps, etc are ALL OFF! Only thing I keep on is wifi, ALWAYS. I've tried leaving my phone off the charger all night and locked to see if the drain was the same, and it is, If not just a tad less drain. I'm sorry if I didn't clarify this good enough, If someone could help me out I'd be glad to explain myself better!

Does your phone maintain a strong to moderate signal (both data and talk)? This includes the strength of your WiFi connection. I've noticed one of the biggest (if not the biggest) drain on this phone and most others comes when the phone is strugling for a decent connection. If you can, try this: put your phone in "Airplane" mode for 1 charging cycle. This means your phone won't even try to get a wireless connection of any type. To be safe, make sure the "WiFi" is off as well. See how long the battery lasts compared to it not being in "Airplane" mode. If it still sucks, you might need to see which app(s) are draining your phone. If it is noticably different, a weak signal might be the problem. Good luck.

Interlaced said:
You say your rom is 2.3.5, but in my settings it says 2.3.6.
Click to expand...
Click to collapse
He changed it only in text for certain apps that require Android 2.3.6, even though they'd work completely fine on 2.3.5. Somewhat an easy workaround. Also took some of the features from 2.3.6 in. It's still built from 2.3.5 though.
Interlaced said:
Only thing I keep on is wifi, ALWAYS.
Click to expand...
Click to collapse
Thiiiis is probably your big issue. If you have any apps running in the background that use data, they can keep the wifi awake, which, in turn, never lets your phone sleep. If you go to Settings>Wireless and network>Wi-fi Settings>Menu Button>Wi-Fi Sleep Policy, and set it to "When screen is off," you'll be AMAZED at how much life it can save. I've noticed drastic differences when that setting is applied. As far as without it losing around 10-15% overnight to a mere 1%.

Thanks for your replies! I'll try you guys' ideas out now. I seem to lose about 1-3 percent every 10 minutes. I'll put it in airplane mode and try it for an hour.
Thank you Fortune! was wondering how to do this, You could have just solved my problem. I'll keep you guys informed! I'm amazed at this communities helpfulness. Thank you!

No prob!
Though, next time, if you have a question, should post it in the Q&A section of this forum. People tend to get a bit pissy about seeing Q's posted in other places, haha. Just giving a heads up!
Hope those fixes fix your battery life! That wifi sleep on has been key for my 30+ hr battery lives on SkyICS.

Seemed to not help :| Since I've done this, It's gone from 22% to 17% in about 15-20 minutes. No apps running, etc.

Try downloading CPU Spy from the market place and after awhile of letting it rest (about an hour or so), open it, refresh and check to see the CPU uses the "Deep Sleep" frequency at all and to see which frequencies it spends most of its time in.
Also wouldn't hurt to check Settings>About Phone>Battery Use to see what's using most of your battery life. Display, Android System, and Android OS typically hold the top 3 spots, so if anything is up there (or at a close 4th), that app could be what's bogging it down.

I downloaded CPU Spy and it seemed to already have data for it and it says 4% in deep sleep, 65% in 38 mhz, 5% in 810 MHz, and 1% in 1026 mhz, 17% in 1728 MHz

Interlaced said:
I downloaded CPU Spy and it seemed to already have data for it and it says 4% in deep sleep, 65% in 38 mhz, 5% in 810 MHz, and 1% in 1026 mhz, 17% in 1728 MHz
Click to expand...
Click to collapse
Alright, well so far so good. Shows it's at least getting some deep sleep and able to idle in low frequencies. Can't really get TOO well of a reading until it's done some time with it idling though.

Do not set wifi policy to screen off, keep it at always. this will keep your data using wifi when connected which is way less of a drain than the 4g radio. Basically with the screen off policy your phone will still use data, it will just come from cellular instead of wifi when screen is off.
Also get this
https://market.android.com/details?id=nextapp.systempanel.r1&hl=en
It will tell you what is running constantly and draining your battery.
Sent from my SAMSUNG-SGH-I727 using Tapatalk

colonel187 said:
Do not set wifi policy to screen off, keep it at always. this will keep your data using wifi when connected which is way less of a drain than the 4g radio. Basically with the screen off policy your phone will still use data, it will just come from cellular instead of wifi when screen is off.
Also get this
https://market.android.com/details?id=nextapp.systempanel.r1&hl=en
It will tell you what is running constantly and draining your battery.
Sent from my SAMSUNG-SGH-I727 using Tapatalk
Click to expand...
Click to collapse
Since he has his data off, turning off the wifi with screen off will benefit him greatly. It would be stuck on otherwise. Noted:
Interlaced said:
My data, bluetooth, gps, etc are ALL OFF! Only thing I keep on is wifi, ALWAYS.
Click to expand...
Click to collapse
And that app was one I was trying to think of and couldn't recall. Also definitely recommended.

Fortune090 said:
Since he has his data off, turning off the wifi with screen off will benefit him greatly. It would be stuck on otherwise. Noted:
Click to expand...
Click to collapse
Ah ha. You are correct. I skipped over that detail. Just kidding about the wifi then. don't listen to me....

having wifi on all the time does not drain the battery...i have wifi on 24/7 an can easily get 36 hours
30% left and ive got 26 hours runninh wifi on
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polish_pat said:
having wifi on all the time does not drain the battery...i have wifi on 24/7 an can easily get 36 hours
30% left and ive got 26 hours runninh wifi on
Click to expand...
Click to collapse
Ohwow.... That's....... Interesting, haha. If I notice my wifi is on for extended periods of time, my battery starts draining a bit faster than normal.
Might have some app in his background either keeping the phone awake or just hogging background data, keeping the wifi constantly active.
Sent from my SAMSUNG-SGH-I727 using xda premium

the real issue is when i actually stop being on wifi. when my phone uses data connection, mostly LTE because its everywhere around me, the battery life becomes miserable. I left the house for about 1 hour today, you can clearly see it on the graph. I should try to cut all connectivity and just allow the phone to sync every now and then, im sure ill be able to add another half a day at least to my already 1.5 days with wifi on all the time

polish_pat said:
the real issue is when i actually stop being on wifi. when my phone uses data connection, mostly LTE because its everywhere around me, the battery life becomes miserable. I left the house for about 1 hour today, you can clearly see it on the graph. I should try to cut all connectivity and just allow the phone to sync every now and then, im sure ill be able to add another half a day at least to my already 1.5 days with wifi on all the time
Click to expand...
Click to collapse
Yeah, data is a KILLER. For me, it's usually wifi or nothing, unless I'm trying to send or receive an MMS, or need to quickly access the Internet, but I turn it back off as soon as I'm done, and I set my network to no LTE because it's not in my area.
Just take that as a note OP, lol.
Sent from my SAMSUNG-SGH-I727 using xda premium

Fortune090 said:
Yeah, data is a KILLER. For me, it's usually wifi or nothing, unless I'm trying to send or receive an MMS, or need to quickly access the Internet, but I turn it back off as soon as I'm done, and I set my network to no LTE because it's not in my area.
Just take that as a note OP, lol.
Sent from my SAMSUNG-SGH-I727 using xda premium
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Yeah same here. I notice more than sublet the battery life if I keep data off. I'm almost always in a wifi area so it doesn't affect me.
Sent from my SAMSUNG-SGH-I727 using xda premium

It looks like your screen is almost never on. Thats what always consumes the most power on my phones, by far.
polish_pat said:
having wifi on all the time does not drain the battery...i have wifi on 24/7 an can easily get 36 hours
30% left and ive got 26 hours runninh wifi on
Click to expand...
Click to collapse

This is mine....
SkyIce 7.3 Speed

This is my usage when i dont touch LTE

Poor battery life on WiFi

Hi, can anyone help me solve this problem. I'm getting poor battery life from my Nexus S (stock 4.0.4) & android OS using a lot of battery. I've narrowed it down to WiFI - when I turn WiFi on, the battery depletes much faster than when I'm on 3G & android OS goes from ~7% to ~20% in battery stats. This is the opposite way around from what I would expect based on other posts, which say that WiFi uses less power than 3G. You can see the effect in the screenshot - for the entire time on this screenshot, I was at work with good 3G coverage & the WiFi point is right outside my office:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Any suggestions?

I agree with you, stock 4.0.4, Matr1x kernel (but I get same results with Air kernel too) and wifi always on = poor battery life.
My workaround is keeping it off and switching it on only just before an autosync or when opening browser/Gmail (I do that with Tasker)

When WiFi is in use what are you doing?

XxLostSoulxX said:
When WiFi is in use what are you doing?
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Click to collapse
Essentially nothing. I checked the odd email, but for the most part the phone was in my pocket doing nothing.

have you got a background service that only runs on wifi?
also, in my experience, 3g only uses more battery when you're actually receiving data (e.g. browsing, data sync).
to me your battery stats don't look that bad, so my theory is that because you don't use your phone that much, anything that uses just a little bit of battery makes a big difference in battery use percentage.
but then again, I could be completely wrong...
Sent from my Nexus S using xda app-developers app

Aktifit said:
have you got a background service that only runs on wifi?
also, in my experience, 3g only uses more battery when you're actually receiving data (e.g. browsing, data sync).
to me your battery stats don't look that bad, so my theory is that because you don't use your phone that much, anything that uses just a little bit of battery makes a big difference in battery use percentage.
but then again, I could be completely wrong...
Sent from my Nexus S using xda app-developers app
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Well one thign is for sure battery will always die faster on the network because most of the time if your in bad service areas it trys to fight for service therefore shi**ier battery life.
But @ Richstant do you disable mobile data manually like. For example because my NS4G is just deactivated on my Epic 4G i manually disable data and re enable when i use something so i save battery life.

I switched my sleep policy to while plugged in now. The difference with just switching the wifi on and off is really insane for me.

The way WiFi works while screen is off is hopeless on the Nexus S. I think it may be exagerrated because of the guzzling hardware as it seems no different on the GN or SGS3, though they dont drain nearly as much (i thought otherwise at first, unsure if it's on a phone-by-phone basis though). WiFi likes to stay on even if you set sleep policy otherwise - look at it funny and it will stay on and drain. This is something that i hope will improve in JB, but i doubt it. For now, best bet is set to Never (or plugged in, same effect) and switch it off manually if you won't be using it for long periods of time.
WiFi uses less power for large amounts of data and even browsing. It's faster, it doesn't need to send extra power and there is less thrashing to find the best signal. Data, however, is technically always there anyway as the radio is always powered, so if it only needs small amounts of constant data, it is often better for battery if you have good reception. This is one thing we i don't think we'll be worried about in newer phones, thankfully.

XxLostSoulxX said:
Well one thign is for sure battery will always die faster on the network because most of the time if your in bad service areas it trys to fight for service therefore shi**ier battery life.
But @ Richstant do you disable mobile data manually like. For example because my NS4G is just deactivated on my Epic 4G i manually disable data and re enable when i use something so i save battery life.
Click to expand...
Click to collapse
Reception is good, mobile data is on all the time.
ykphuah said:
I switched my sleep policy to while plugged in now. The difference with just switching the wifi on and off is really insane for me.
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Click to collapse
I'd forgotten about that setting, I'll try it now. In the past it's not worked for me though - the WiFi just stays on all the time no matter what.
Harbb said:
The way WiFi works while screen is off is hopeless on the Nexus S. I think it may be exagerrated because of the guzzling hardware as it seems no different on the GN or SGS3, though they dont drain nearly as much (i thought otherwise at first, unsure if it's on a phone-by-phone basis though). WiFi likes to stay on even if you set sleep policy otherwise - look at it funny and it will stay on and drain. This is something that i hope will improve in JB, but i doubt it. For now, best bet is set to Never (or plugged in, same effect) and switch it off manually if you won't be using it for long periods of time.
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Click to collapse
Thanks for the info - sounds like it might be just the way this handset is :-( I don't remember it being this way under gingerbread, the WiFi turned off properly when it slept then, and battery life was much better.

richstant said:
Reception is good, mobile data is on all the time.
Click to expand...
Click to collapse
I'd still disable the mobile data even regardless of how good the reception is it'll still save you more juice in the long end

You don't have any apps set to auto-upload or backup anything (e.g. Dropbox Camera Uploads, G+ Instant Upload) once it connects to Wifi do you?

Harbb said:
The way WiFi works while screen is off is hopeless on the Nexus S. I think it may be exagerrated because of the guzzling hardware as it seems no different on the GN or SGS3, though they dont drain nearly as much (i thought otherwise at first, unsure if it's on a phone-by-phone basis though). WiFi likes to stay on even if you set sleep policy otherwise - look at it funny and it will stay on and drain. This is something that i hope will improve in JB, but i doubt it. For now, best bet is set to Never (or plugged in, same effect) and switch it off manually if you won't be using it for long periods of time.
Click to expand...
Click to collapse
Hmm, that option worked fine for me, when I unlock the phone, there's a 1-2 second delay before the wifi icon comes up, if I am not plugged in, that is.
I have latitude on all the time, I am suspecting that latitude is the one that causes my battery drain WHILE wifi is on, since there's just too much wifi hotspots around here, and if latitude is triggered everytime there's a new wifi hotspot discovered, then it will have a lot of updating to do. Using the sleep mode doesn't cut down the number of wakelocks (reported by BetteryBatteryStats) that those LocationServices triggers however, but battery life does seemed to be saved, especially on the days where I rarely use my phone.

allevolve said:
You don't have any apps set to auto-upload or backup anything (e.g. Dropbox Camera Uploads, G+ Instant Upload) once it connects to Wifi do you?
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Click to collapse
I would look at this also. If there is an app that has some connection with wifi (i think this would be done through intents but i'm not very familiar), it may either keep wifi on or awaken it from sleep periodically (where it looks like other apps/features take over and continue using it instead of shutting it off immediately). Maps and something from Android OS or Android System seem to be main culprits if the battery page is to be believed. BetterBatteryStats can help, but haven't gained that much information in regard to wifi - though is priceless in most other areas.
Edit: Didn't see the last post (got distracted lol). That could be it. Note that in BBS you should also look at the number of wakeups, not just the time wakelocked. Obviously you can rack up a lot of wakeup attempts and still show only 1s of actual wakelock, but it adds up immensely from there - particularly when some other apps are triggered because they are notified wifi is temporarily "active" when it shouldn't be. Also, these are my experiences and not coding fact, so take them with a grain of salt and listen to those wiser than I

Well I'm pleased to say I got a serious improvement in battery life by setting wifi to off when not in use (except when charging). I tried that under 4.0.3 & it didn't work, but it seems to work correctly under 4.0.4.

wow, I didn't even know there was a "wifi on during sleep only when plugged in" option. I knew juice defender and other similar apps did something like that, but didn't know it was built into ICS (or CM9 )
thanked for the tip

[Q] Who's to blame for battery drain?

My phone went from 90% batt to 0% in 5h of screen off time. Usage shows Android OS 60% and SopCast 30%.
When i locked the phone i left it on the home screen.
So who's to blame? The rom, kernel or the app?

could you please provide a bit more detail like what kernel or rom you have and also if you could upload screenshot of battery usage

Rule out your application first. I'm assuming SopCast is a podcast application? If you were streaming, that will explain it. And yes. We need more details.

Install betterbatterystats and find out whats keeping your phone awake
Sent from my ASUS Transformer Pad TF300T using xda app-developers app

kwibis said:
Install betterbatterystats and find out whats keeping your phone awake
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
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Thanks, i used to have it installed, but i could never interpret any results from it since the lingo is beyond me (i.e. partial wakelocks, kernel panics...).

dinuvali said:
Thanks, i used to have it installed, but i could never interpret any results from it since the lingo is beyond me (i.e. partial wakelocks, kernel panics...).
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Click to collapse
Well the same here lol. However if you focus a bit you'll find out some nice things. Kernel wake lock will give you the apps that keep your phone awake. For me its mostly the exchange which is email. You can take a screen shot and share if you'd like.
Sent from my Nexus S using xda app-developers app

kwibis said:
Well the same here lol. However if you focus a bit you'll find out some nice things. Kernel wake lock will give you the apps that keep your phone awake. For me its mostly the exchange which is email. You can take a screen shot and share if you'd like.
Sent from my Nexus S using xda app-developers app
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Kernel wakelocks was empty, so i SS-ed the partial wakelocks.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Anyway this is no longer related to that obscene 90% overnight bcuz i uninstalled sopcast. Now i just had 16% drain overnight (with Wi-Fi off) which is still a lot imo.

Having 18% drain overnight on JB with wi-fi off. Any ideas?

Why are turning wifi off in the first place? That is stupid if you're trying to extend battery life.
What is your cell signal like. A crappy cell signal drains battery. A crappy 3g signal that is constantly on because you turned off wifi drains even more.

albundy2010 said:
Why are turning wifi off in the first place? That is stupid if you're trying to extend battery life.
What is your cell signal like. A crappy cell signal drains battery. A crappy 3g signal that is constantly on because you turned off wifi drains even more.
Click to expand...
Click to collapse
i was under the impression (from gingerbread times) that wi-fi uses up more battery than 3g; this was among the tips you would find back then on android sites to extend battery life.
Anyway, i have yet to find out who is calling the AlarmManager that is keeping the device awake. Any idea how i would go about doing that?

converse5 said:
could you please provide a bit more detail like what kernel or rom you have and also if you could upload screenshot of battery usage
Click to expand...
Click to collapse
chronophase1 said:
Rule out your application first. I'm assuming SopCast is a podcast application? If you were streaming, that will explain it. And yes. We need more details.
Click to expand...
Click to collapse
dinuvali said:
My phone went from 90% batt to 0% in 5h of screen off time. Usage shows Android OS 60% and SopCast 30%.
When i locked the phone i left it on the home screen.
So who's to blame? The rom, kernel or the app?
Click to expand...
Click to collapse
Hi, like the other guys said that are trying to help u....
We need more information to try and help u figure it out.
What ROM?
What kernel?
Any other modes or tweaks?
Vs Nexus S 4G using Tapatalk 2

I didn't mention that info so far because the initial problem of this post is fixed (SopCast (podcast app) keeping phone in stream mode) by uninstalling the said app.
Now, i believe that the overnight drain on my current JB ROM is too high.
So, here it is: Rom is Grean Bean ( http://forum.xda-developers.com/showthread.php?t=1821478 ), kernel is Matr1x 22.5 (but the drain didnt change when i changed kernel (beladus, _thalamus, air) and the significant mods that the rom has are V6 supercharged and brainmaster's twks.

dinuvali said:
i was under the impression (from gingerbread times) that wi-fi uses up more battery than 3g; this was among the tips you would find back then on android sites to extend battery life.
That was not the case in GB times or any times. Either you read wrong or the sites are stupid. Considering that for the most part the android sites / bloggers are still idiots today, who knows.
Anyways. WiFi uses the least battery. Less the 3g/2g. Should be used whenever possible to save battery. Phone in active use or idle you should be connected to WiFi over cellular data. Turning all radios off but enabling WiFi is the most battery efficient thing you can do and still have data but you won't have the actual phone. I do that at my buddies house where I get no service at all. Not going to use the phone for a couple hrs use airplane mode. That uses very little power if the phone is sleep. Turning the phone off and on uses more.
Also the better your signal is the less power the phone will use. You still gave no signal strength info. Frankly you're wasting your time with better battery stats and wakelocks etc when you don't fully grasp this radio stuff. Use that tool when you need to find something that keeps your phone awake when idle/not in deep sleep.
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Click to collapse

albundy2010 said:
Also the better your signal is the less power the phone will use. You still gave no signal strength info. Frankly you're wasting your time with better battery stats and wakelocks etc when you don't fully grasp this radio stuff. Use that tool when you need to find something that keeps your phone awake when idle/not in deep sleep.
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Click to collapse
That's the situation i'm in. It seems i've solved it by figuring out which apps were calling the AlarmManager and the Media server, there were 2 actually: Latitude and Google Music Sync, that were waking too often. Now i've simply disabled them.
I didn't give any signal strength info, bcuz i didn't move and didn't change the radio. It's a jelly bean thing for sure (i have google now disabled). Many users have been complaining (in various rom threads) about this new found drain after the upgrade.

dinuvali said:
That's the situation i'm in. It seems i've solved it by figuring out which apps were calling the AlarmManager and the Media server, there were 2 actually: Latitude and Google Music Sync, that were waking too often. Now i've simply disabled them.
I didn't give any signal strength info, bcuz i didn't move and didn't change the radio. It's a jelly bean thing for sure (i have google now disabled). Many users have been complaining (in various rom threads) about this new found drain after the upgrade.
Click to expand...
Click to collapse
Yeah, I normally play with a new ROM bare boned to see if has a natural drain.
Then I add the apps that I have been using that I know do not drain battery life.
And the other person is dead in with the signal advice. I had a HTC hero before and it had many tweaks on fixing the signal so battery would last. Which is why I love the pull down notification bar and some ROMs have idle timers.
Good luck
Vs Nexus S4G using tapatalk2