Database Users

[Q] Tips to extend battery life? Anyone?

Hey guys,
Just got my Epic yesterday.. coming from the G1 with lots of experience loading and tweaking ROMs and dealing with same/similar battery issues.
After unpacking the Epic I used it and let it drain down to zero before recharging it; after a full recharge, I loaded up the 7 screens with widgets and ran a live wallpaper (fish). I didn't really use the phone much at all and the phone went from 100% battery down to zero in the span of only four hours!!! Geeze, you've got to be kidding me - four hours battery life?? WTF????!!
Back to the drawing board: I rooted it and ran SetCPU with some power saving profiles. Removed the live wallpaper and went to stock wallpaper. Set display power off at 30 seconds. Note that 4G remains off since there's no 4G in my area..
Couple of questions:
1. Is there any way to toggle 2G/3G like there was on my old G1? I know that was a power saver.
2. I didn't stop to read all the documentation yet (typical male, I know) but is there any way to wake this thing up from sleep mode besides pressing the power button? I can see that power button breaking for as much use as it's getting from me constantly having to wake this thing up!
3. My brightness setting is set to auto - since the display is usually the biggest drain on these things, is there a recommended manual brightness setting (percentage) that seems to work well for you and saves on battery power?
I'm waiting for the Seideo Extended Battery (just like many of you) and am wondering if I should keep the Epic since I'm on the Sprint 30-day Easy Return program.
Appreciate hearing from everyone!
Chris R.

I don't have 4G where I am. But, I have a all black wallpaper(uses less power) and unrooted. I easily get about 12-18hr out of my phone wit normal use(text, talk, and surfing the net with skyfire). Only thing that really kills my battery are games(Robo Defense can take over 30min to play one game).

Thanks for the reply - situation NOT improving
Thanks for the reply.. unfortunately, the situation is not improving...
I tried setting a Sleep Profile using SetCPU that would under-clock the CPU (using the stock kernel) once the screen dimmed and the phone went into Sleep Mode. Unfortunately, as mentioned in another thread here, the result was that the phone froze and required a battery-pull to reset.
I'm really starting to lose my enthusiasm for this device; as beautiful a display and as responsive a CPU/GPU, all of that doesn't mean much if you don't have good power management built into the firmware. At 6PM this evening I pulled it off the charger at 67% charged, it's now 8:35 PM, only 2.5 hours later and I'm down to 22%. I'm in a decent coverage area and get 2-4 bars of 3G strength so I don't think it's an issue of the radio being the culprit; in-fact if you check the battery stats it reports that that lovely Display is accountable for 78% of the battery usage! So I guess we're paying a hefty price for these 4-inch AMOLED displays!
I read somewhere else that the most recent update (DI07) has caused the battery performance to decrease; since my unit is brand-new it immediately went and installed DI07 shortly after the first boot-up so I have nothing to compare it to.. can anyone comment on that?
Thanks!
Chris R.

I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work). Other than that, yes, use black wallpaper, lower brightness to the min. in the OS and browser, and don't leave apps that constantly use 3G open (things like ebuddy, pandora, etc.). 3G really destroys battery life so minimal use of 3G data would maximize battery life. Maybe the devs can figure out a way to get at least one full day of battery life on this phone. I'm hoping that is the case.
As to your post, yes, DI07 has resulted in poorer battery life, for whatever reason. I was definitely getting a few hours more with the older firmware. I would not lose hope yet. As disappointed as you are (and all of us are, I can assure you of that), the devs are really starting to push out nice ROMs already, and in a few weeks to a month, I bet we will see some solid battery life. Hell, even 2.2 should yield much better results. Patience

Thanks for the tip!
nimaim said:
I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work).
Click to expand...
Click to collapse
Thanks for the reply! Also thanks for the tip regarding JuiceDefender! What a great app! will give it some more time and report results back here.
Thanks again!
Chris R.

nimaim said:
I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work). Other than that, yes, use black wallpaper, lower brightness to the min. in the OS and browser, and don't leave apps that constantly use 3G open (things like ebuddy, pandora, etc.). 3G really destroys battery life so minimal use of 3G data would maximize battery life. Maybe the devs can figure out a way to get at least one full day of battery life on this phone. I'm hoping that is the case.
As to your post, yes, DI07 has resulted in poorer battery life, for whatever reason. I was definitely getting a few hours more with the older firmware. I would not lose hope yet. As disappointed as you are (and all of us are, I can assure you of that), the devs are really starting to push out nice ROMs already, and in a few weeks to a month, I bet we will see some solid battery life. Hell, even 2.2 should yield much better results. Patience
Click to expand...
Click to collapse
DI07 has hurt my battery life substantially. In fact, my battery drains very close to twice as fast now with the update. I don't understand what they did. My phone certainly doesn't seem any faster, my display is dimmer, and battery life sucks. I'm going to have to go back to DG27 so I can use my phone all day. With DI07 it always dies on me by mid afternoon. With DG27 it was still running by 11pm at night without even a battery low warning.

juice defender ftw
also, use advanced task killer with low security settings to kill all the background processes. Set the autokill to when the screen turns off. This keeps everything pretty well managed and helps with battery as well

JUICE DEFENDER BATTERY!!! Saved my phone from flying out of my car window at 10 in the morning........

here is a link to a thread I started.
Sharing my juice defender settings. I also use ultimate juice.
http://forum.ppcgeeks.com/sprint-epic-4g/133933-sharing-my-juice-defender-settings.html
I can get a day and a half (or slightly longer) out of a single charge.
YMMV.
Hope this helps

Advanced task killer + Juice Defender. You could also get some custom roms and Kernals that would help boost it.
But that's your best hope. Keep off 4g, wifi, bluetooth, etc.

compujock said:
DI07 has hurt my battery life substantially. In fact, my battery drains very close to twice as fast now with the update. I don't understand what they did. My phone certainly doesn't seem any faster, my display is dimmer, and battery life sucks. I'm going to have to go back to DG27 so I can use my phone all day. With DI07 it always dies on me by mid afternoon. With DG27 it was still running by 11pm at night without even a battery low warning.
Click to expand...
Click to collapse
Look here- try stopping the DRM service and see if that helps your battery life with D107

jimmyz said:
Look here- try stopping the DRM service and see if that helps your battery life with D107
Click to expand...
Click to collapse
Ah, the evils of DRM can strike in unexpected ways...
I wasn't really having a battery problem but I just turned DRM off, so we'll see if battery life improves anyway.
I had a whole long post here that got wiped with the xda disk array failure, so I'll just sum that up here too:
1) Use wi-fi if possible - it REALLY helps
2) 4G does not seem to use the battery any more than 3G, although hunting for 4G does and 4G coverage is not as extensive as 3G even in 4G areas. So it's still best to leave it off if you're moving around.
3) Dim your screen and use a dark, static background. AMOLED screens don't work like LCD's; they use more power the more pixels are lit and the brighter they are.
4) GPS also kills your battery - leave that off unless you need it too.
I think that's it. I get about 18 hours on DI07 (even before trying the DRM thing; maybe I can get to a full day!).
One thing I'm noticing after checking DRM - I've got Google Maps' LocationService popping up about every 10 seconds, and I can't seem to shut it off permanently. (I went into Lattitude and turned that off, not sure what else to do.) That can't be helping... anyone know how to get rid of that?

I'm using juice defender and a constant email junkie, but lite use on other aspects of the phone. It goes off charger at 5:30 am and I'm about 67% at around 3p. It then goes in the car charger on the way home. This has much better battery life than the Pre or the Hero as with both I had to turn off email to get it to last throughout the day.
I don't expect these phones to last days, but I expect any phone that I get to last the business day. I've always been one to charge overnight.

Wifi drains battery more from what I've read.
Sent from my SPH-D700 using XDA App

I've heard the opposite that wifi (as long as it's connected) uses up less battery than 3g/4g. Any of them will suck the battery dry if they're searching, so make sure you have a connection to one of them.

Hi everyone, new to the forum. Just started checking it out when the Epic was released and this is my first post. Anyways, here's my question. My phone's been off the charger for 7 hours and 17 minutes and it is now down to 15%.
Display 79%
Cell standby 7%
Android System 4%
Phone idle 2%
Swype 2%
I've gone into the display settings and I thought I had set everything up optimally. The brightness is always very low. The screen timeout is 15 seconds and the keyboard matches that. I don't know what else I can do to cripple the phone to get the battery to last longer.
I have had wifi on, 4g off, bluetooth off, gps off. Really all I have done this afternoon while watching NFL games is check my yahoo fantasy score, play 2 games of WordFeud, and check twitter and facebook. I purchased Juice Defender a week ago and it has been running all day.
Any suggestions for how I can reduce the drain from the display? My background is a black and white picture of a friend of mine, which I thought would help.
Don't get me wrong, I love this phone. But the battery life I've seen is just terrible. I'd love to buy the extended battery from Seidio whenever its available, at least that would make it last longer even if the settings aren't tweaked.

Do you have juice defender installed?

Yep. Its installed and running now.
Sent from my SPH-D700 using XDA App

bagelicious said:
Hi everyone, new to the forum. Just started checking it out when the Epic was released and this is my first post. Anyways, here's my question. My phone's been off the charger for 7 hours and 17 minutes and it is now down to 15%.
Display 79%
Cell standby 7%
Android System 4%
Phone idle 2%
Swype 2%
I've gone into the display settings and I thought I had set everything up optimally. The brightness is always very low. The screen timeout is 15 seconds and the keyboard matches that. I don't know what else I can do to cripple the phone to get the battery to last longer.
Click to expand...
Click to collapse
There are only two reasons for your display to be using that much battery:
a) it's too bright, or
b) you're using it a lot.
If you're using the phone a lot, your battery's going to run out pretty quick and there's no way around that. If you're using it a "normal" amount, which to me means maybe an hour *total* per day of having the display on, then the other culprit is going to be your brightness. (Some would argue that's less than a normal amount, but think about it... you get a new phone, you're going to play with it for a week or two until you've seen all the cool stuff. But at some point you're going to start putting it away most of the time and just using it when someone calls you, you get a message/email or maybe to play a game or two while waiting for the train.)
Set your brightness *all* the way down, just as a test for a couple days. Make sure all the "power saving" features of the display are turned *off* (auto brightness, and whatever that "picture detection" feature's called, I can't remember). You just want the display as dim as possible all the time, just to see what happens. See what the battery usage says after a day or two of this.
My bet is that you'll see a drop, and then as you get into a more normal usage pattern it'll drop further still. You can raise the brightness a couple ticks then as you learn how to stretch your battery out.
Personally, my display is rarely over 15% or so of my usage. Today it's 29%, but it's a Sunday and I don't have anything better to do but play around on my phone.
btw, it's still the first day I've tried this but that DRM thing might be working. It's almost 9PM and I'm still on like 80% battery, and like I said I have been using the phone off and on throughout the day.

That has helped tremendously. I installed it pretty much when I got the phone and I'm able to last the whole work day with 67% left. (10 hour day)

Battery life issues.

I know there have been many threads like this but I'm just looking for clarification as this is my first Android phone. At my house I usually get the Rogers H speed with 3/4 bars. When I browse the Internet for just an hour, 15% of the battery has been drained. Is this normal on these speeds?
I plan on leaving an IM client on 24/7 and using GPS/maps daily, so I am a bit worried because this may not last the entire day. I could switch to EDGE when I don't need it but apparently I heard that will disconnect once I start a voice call (and want to keep my IM on always). I checked my battery stats and apparently the cell standby (H) is taking most of the battery.
I am using CyanogenMod 6.1.1 with stock radio from Bell. I'm going to try to see if SetCPU makes a difference. And is there any program that can limit the HSPDA bandwidth so less battery is used? Thanks.

call *#*#4636#*#*

If you are at home or in a Wi-Fi accessible, Turn ON wifi - it uses wayyyyy less battery than the phone radio when it comes to Data....
you could get a extended battery.... Mugen Power has one for 1800 mAH and its the same size as the stock battery so no need of a bigger door.

What is your screen brightness set at? The screen is one of the top battery drain culprits. Try turning off auto-brightness, and turning the brightness down to as low as you find tolerable (depending on personal taste, and the lighting conditions in the places you use the phone the most). I recently just lowered my brightness to 35% (still plenty bright under many conditions) from 45%, and already noticing a significant improvement in batter life. Battery usage of the display dropped from over 70% to 45-50%. I haven't had the brightness set this low long enough to see how it translates to hours/days between charges, but we'll see how it goes . . ..

my battery life is retarded. probably less than yours. i swear i think i lose 1% of battery per minute of web surfing. battery is fine if you do not go on the web and have 2g on all day.

Yeah, it's pretty bad.
But that's the same for most smartphones nowadays I think...
Back to the days of game gear, the battery muncher.
6AA = 5 hours of gameplay.
I just bought some Chinese 1500maH batteries on eBay and I don't know if they're actually 1500maH. If I play with my phone a bit, I get 50% after 8 hours at work. Yikes!

Frostie123 said:
I know there have been many threads like this but I'm just looking for clarification as this is my first Android phone. At my house I usually get the Rogers H speed with 3/4 bars. When I browse the Internet for just an hour, 15% of the battery has been drained. Is this normal on these speeds?
I plan on leaving an IM client on 24/7 and using GPS/maps daily, so I am a bit worried because this may not last the entire day. I could switch to EDGE when I don't need it but apparently I heard that will disconnect once I start a voice call (and want to keep my IM on always). I checked my battery stats and apparently the cell standby (H) is taking most of the battery.
I am using CyanogenMod 6.1.1 with stock radio from Bell. I'm going to try to see if SetCPU makes a difference. And is there any program that can limit the HSPDA bandwidth so less battery is used? Thanks.
Click to expand...
Click to collapse
Assuming the screen was on the entire time, 15% drain for an hour of web surfing sounds pretty good to me. The main battery eater while using the phone is the screen, so I doubt messing with your connectivity is going to drastically change your battery consumption in this usage scenario. Changing connectivity to Wifi or EDGE would probably help more during those times when your phone is off but your phone is still connected to the internet.
On a side note, I had terrible idle battery life when I was using CyanogenMod 6.1.1 on my Desire Z. When I was using my phone, battery life seemed normal. But when the phone was on standby, it seemed like my phone was running even when it was supposed to be on standby. I suspect it might have been SetCPU constantly polling in the background. I switched to Virtuous and didn't install SetCPU/didn't do any overclocking and my life improved literally threefold.

[TIPS] Juice Defender, Why its good and bad

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
Sent from my brilliant Viper skinned Apple iPad 2 using the superior Tapatalk Premium

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

[Q] What am I doing wrong? (N4 Battery Life)

I've had this phone for around week (off craigslist so it's been broken in) and I can't seem to get any sort of good battery life from this device. I mean yeah it's ok, max I've gotten is 2.5 hours sot with 10-12 hr standby.
This screen is from today so far. I'm already down to 40% and not even at 2 hrs sot yet. What's going on? I've tried Franco's kernel, fauxs kernel, and now I'm on matr1x kernel. (all with undervolting) I've tried carbon, stock, and now I'm on rasenjb.
I don't think I'll ever get to these 5 and 6 hour sot times with a day and a half of standby everyone is getting.. I bought this device because of how good the battery life I saw everyone was getting and it's been a big disappointment so far. I've tried almost everything and that's why I made this thread. Does anyone have any suggestions?

That's because everyone liked to install custom kernels, underclock, never use their phone like a normal phone and then claim 5 hours SOT which is total BS.
Expect 10-12 hours with 3 hours SOT, that's normal. I've gotten way better than that but only when connected to Wifi and almost no actual phone calls. Anytime you're on the cellular network expect 10-12 hours tops

ingenious247 said:
That's because everyone liked to install custom kernels, underclock, never use their phone like a normal phone and then claim 5 hours SOT which is total BS.
Expect 10-12 hours with 3 hours SOT, that's normal. I've gotten way better than that but only when connected to Wifi and almost no actual phone calls. Anytime you're on the cellular network expect 10-12 hours tops
Click to expand...
Click to collapse
I've seen a lot of screen shots with 4hrs + though. I guess it's only achievable on WiFi. I'm on HSPA+ for 8 hours of the day and then I come home and there's WiFi. So I'm guessing data is draining my battery throughout the day like a hog. Maybe I'll try out that screen off 2G mod that I saw. Thanks for your input!
Sent from my Nexus 4 using xda app-developers app

6 hours+ sot easy....
google now off
low brightness
nfc etc off (go through all settings and turn all unecessary crap off)
double check settings/google/accountname.gmail .. make sure music sync is off/unticked
use wifi only or 2g if you must (set 2g only anyway even when on wifi, stops the phone switching towers all the time)
use custom kernel and undervolt (optional) ..most come standard with a bit of undevolt already
don't have lots of apps syncing all the time.. facebook ect
use aosp browser or similar and not chrome
don't use live wallpapers
don't play heavy games , use mostly for messaging and browsing

meangreenie said:
6 hours+ sot easy....
google now off
low brightness
nfc etc off (go through all settings and turn all unecessary crap off)
double check settings/google/accountname.gmail .. make sure music sync is off/unticked
use wifi only or 2g if you must (set 2g only anyway even when on wifi, stops the phone switching towers all the time)
use custom kernel and undervolt (optional) ..most come standard with a bit of undevolt already
don't have lots of apps syncing all the time.. facebook ect
use aosp browser or similar and not chrome
don't use live wallpapers
don't play heavy games , use mostly for messaging and browsing
Click to expand...
Click to collapse
Might as well buy a Nokia 1611 then

Might have to see how PA is on battery life..
Sent from my Nexus 4 using xda app-developers app

ingenious247 said:
That's because everyone liked to install custom kernels, underclock, never use their phone like a normal phone and then claim 5 hours SOT which is total BS.
Expect 10-12 hours with 3 hours SOT, that's normal. I've gotten way better than that but only when connected to Wifi and almost no actual phone calls. Anytime you're on the cellular network expect 10-12 hours tops
Click to expand...
Click to collapse
Don't be hating because you are in a poor signal area. I get 6hrs sot on wifi and at least 4hrs on hspa+. If you are in an area that is a weaker signal, like 3g and edge with only one bar, sot will be less. I am stock rooted, including kernel. If a person doesn't use the phone the battery will last a long time, but the sot will also be low. For example, 24hrs of battery life with only one hour of sot pretty much means the phone was just laying there and barely used. On the other hand, 10hrs of battery life with 5hrs of screen time means the phone was used much and faired good. Apart from sot, cell signal is the biggest battery drainer. When I go to my sis-in-laws, which is a very weak area, my battery steadily drains with my phone just in my pocket. *edit* I should also note, when at home on wifi, I'm also on my Microcell, so I always have a strong signal.
Sent from my Nexus 4 using Tapatalk 4 Beta

I usually get between 2.5 and 3.5 hours screen on time. Sometimes better, sometimes worse. You can use better battery stats to diagnose and try to kill unnecessary wakelocks. And yes you can under clock and sacrifice functionality, but rest assured 5-6 hours sot is not typical, even if some people can achieve it on a regular basis.
Sent from an N4 blessed with AOKP and sanctified by Faux123!

fernandezhjr said:
Don't be hating because you are in a poor signal area. I get 6hrs sot on wifi and at least 4hrs on hspa+. If you are in an area that is a weaker signal, like 3g and edge with only one bar, sot will be less. I am stock rooted, including kernel. If a person doesn't use the phone the battery will last a long time, but the sot will also be low. For example, 24hrs of battery life with only one hour of sot pretty much means the phone was just laying there and barely used. On the other hand, 10hrs of battery life with 5hrs of screen time means the phone was used much and faired good. Apart from sot, cell signal is the biggest battery drainer. When I go to my sis-in-laws, which is a very weak area, my battery steadily drains with my phone just in my pocket. *edit* I should also note, when at home on wifi, I'm also on my Microcell, so I always have a strong signal.
Sent from my Nexus 4 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Nobody's hating. But somebody IS lying.

ingenious247 said:
Nobody's hating. But somebody IS lying.
Click to expand...
Click to collapse
Are you referring to me? Lying about what? You don't think I can get 6hrs sot on wifi and my microcell. You don't think I can get 4hrs sot on mobile data cellular signal? Those figures are fairly common and I have posted screen shots before. Or maybe you don't believe that a poor signal will drain battery more? Do some research. http://forums.androidcentral.com/showthread.php?p=2817363
Sent from my Nexus 4 using Tapatalk 4 Beta

Signal
Yeah! Its true. Poor signal make your phone drain more battery.
If in your carrier the 2G signal is better than 3G. Set the phone to use only 2G network. (GSM)
Put this in the phone app: *#*#4636#*#* and see the difference.

fernandezhjr said:
Are you referring to me? Lying about what? You don't think I can get 6hrs sot on wifi and my microcell. You don't think I can get 4hrs sot on mobile data cellular signal? Those figures are fairly common and I have posted screen shots before. Or maybe you don't believe that a poor signal will drain battery more? Do some research. http://forums.androidcentral.com/showthread.php?p=2817363
Sent from my Nexus 4 using Tapatalk 4 Beta
Click to expand...
Click to collapse
You're not talking about real world usage. Nobody uses their phone like that. It's people like you that come into threads where regular users with genuine concerns and questions get ridiculed by some guy who has his "phone" set up like some friggin science project talking about 5-6 hours SOT.
Google Search: Nexus 4 poor battery life
About 12,600,000 results (0.19 seconds)
Google Search: Galaxy S3 poor battery life
About 6,310,000 results(0.24 seconds)
^that's half of the results and the S3 has been out way longer with millions more users/owners
Obviously the Nexus 4 has a sub-par battery for today's standards. Case closed.
I answered his question with real life facts, and you're in here spinning fairy tales feeding a delusion that he can go about using his phone like a normal person and get 5-6 hours SOT.
So yeah, you're lying IMO.
Having a poor signal doesn't cut SOT by 4 hours.

Yes, I forget, I'm not using my phone in the real world when I'm working on my science project. Lol. Sorry buddy, but I did unlock my bootloader and root in order to transfer app data from my previous phone, but I am running the stock rom, even odexed version, and stock kernel. I have syncing, nfc, wifi, and gps always enabled. The only thing I don't keep on is Google Now because I don't use it. If you bothered to look closely at the screen shots, you would see the constant strong signal due to my Microcell. When on a weaker cellular signal, it cuts into my sot. I use a Microcell because without it, I get a really crummy signal, so I know firsthand what battery drain is like. And as I stated, on cellular only, I get 4-5hrs screen time, worse if I'm in a really poor location. Idk where you get this 4hr difference from.
Sent from my Nexus 4 using Tapatalk 4 Beta

I usually get around 3.5 - 4 on Franco m2 and carbon Rom browsing the internet on WiFi. No other weird settings, all sync on. It's closer to about 3 doing the same on mobile data. Playing games will toast my battery. I'm still plenty satisfied with my battery life.
---------- Post added at 08:36 PM ---------- Previous post was at 08:16 PM ----------
username8611 said:
I usually get around 3.5 - 4 on Franco m2 and carbon Rom browsing the internet on WiFi. No other weird settings, all sync on. It's closer to about 3 doing the same on mobile data. Playing games will toast my battery. I'm still plenty satisfied with my battery life.
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Also, watch your background apps, Facebook and Google maps have caused battery drain for some people.

username8611 said:
I usually get around 3.5 - 4 on Franco m2 and carbon Rom browsing the internet on WiFi. No other weird settings, all sync on. It's closer to about 3 doing the same on mobile data. Playing games will toast my battery. I'm still plenty satisfied with my battery life.
---------- Post added at 08:36 PM ---------- Previous post was at 08:16 PM ----------
Also, watch your background apps, Facebook and Google maps have caused battery drain for some people.
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I uninstalled facebook. Also Google maps, Google search and most of the other common battery drainers are on greenify. I've come to the conclusion that my mobile data radio is the biggest drainer. Would upgrading my radio offer a more efficient battery life? (I've never upgraded a radio on any of my devices before)
Sent from my Nexus 4 using xda app-developers app

nyyankees1237 said:
I uninstalled facebook. Also Google maps, Google search and most of the other common battery drainers are on greenify. I've come to the conclusion that my mobile data radio is the biggest drainer. Would upgrading my radio offer a more efficient battery life? (I've never upgraded a radio on any of my devices before)
Sent from my Nexus 4 using xda app-developers app
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It probably is low signal strength killing your battery, I should have thrown in the fact that 90% of the time I have full signal. Flashing a radio is no biggie, just dont be stupid about it and kill power halfway through the flash. No need to wipe anything either. I think i saw some recovery flashable ones around here, but i like to use fastboot whenever possible. .48 is the latest official radio, with .54 coming from an international white n4. I'm on .48 and holding off until .54 becomes official before deciding to test it out, since .48 is golden for me. Test all of them, older doesnt mean worse and some people have better luck with the older radios.

It may not be relevant to your experience, but I was disappointed initially in N4's battery life too. Even after dialing down most automatic syncing, being very conservative with screen brightness, and other standard measures.
I installed wake lock detector. In my case, Dropbox was at the top of the list, with an inordinate # of system wake ups.
Turned out a copy of Dropbox on another machine on the same network was, with the 'LAN Sync' option enabled by default, sending out gobs of wake-on-lan packets and was waking up the N4 very often; something that would happen even without Dropbox on the N4, presumably.
Disabling Dropbox's LAN sync seemed to bump my battery life ~20-30%.

Google told me 10 - 12 hours continuous useage. I haven't had anything like that from mine.

username8611 said:
It probably is low signal strength killing your battery, I should have thrown in the fact that 90% of the time I have full signal. Flashing a radio is no biggie, just dont be stupid about it and kill power halfway through the flash. No need to wipe anything either. I think i saw some recovery flashable ones around here, but i like to use fastboot whenever possible. .48 is the latest official radio, with .54 coming from an international white n4. I'm on .48 and holding off until .54 becomes official before deciding to test it out, since .48 is golden for me. Test all of them, older doesnt mean worse and some people have better luck with the older radios.
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Thanks for the info! How do I check which radio version I have?
Sent from my Nexus 4 using xda app-developers app

Why are you fairies arguing?
I got my n4 yesterday and battery seems decent. I was listening to spotify while driving and spent about 1.5 hours in the gym listening to it as well. Also throughout the day was messaging, Facebook, twitter etc. Not heavily, but every once in a while. I'm satisfied.
Sent from my Nexus 4 using xda premium

Terrible Battery Life?

I've been getting godawful battery life - the phone comes off the charger at 8-9 in the morning and I am at ~10% at 3-4 in the afternoon with maybe an hour or two of screen on time. I'm running the latest build of PureNexus and EX Kernel, both of which are supposed to have better battery life. Android System is using 2-3 times more battery than everything else, depending on how long I've had my screen on. Should I switch back to stock (I really don't want to), or are one of these things in particular causing most of the problems?

What about apps??
Install WLD/BBS/GSAM to check the wakelocks..
If that doesn't help (which I think will help hehe) try performing a clean install of the rom+kernel

I have the same setup and I also get not that great of battery life. I get about 2H SOT for 12 hours of uptime. Theres no wakelocks or anything that shouldnt be happening. I just dont get good battery life. I don't even do much on my phone, I just reply to texts, listen to music, and occasionally google stuff.

Check if wifi and bluetooth scanning are on

pipnmike said:
Check if wifi and bluetooth scanning are on
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I didn't even know that was a setting. What exactly does this do? Will it disable any functionality of anything?

jdubya42 said:
I didn't even know that was a setting. What exactly does this do? Will it disable any functionality of anything?
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It helps with many thing but primarily google now. It enables approx location for searches by scaning for wifi and/or bluetooth signal which is used to determine locarion. and also helps with smart lock I believe. Although that shouldn't drain that much battery.
Sent from a Shaftamle Galaxy S4
"Thanks Button" is always appreciated!
149ThemedGoogleKeyboards!!!!!!
Eclipse ROM fatness!
MyColorScreen

jdubya42 said:
I have the same setup and I also get not that great of battery life. I get about 2H SOT for 12 hours of uptime. Theres no wakelocks or anything that shouldnt be happening. I just dont get good battery life. I don't even do much on my phone, I just reply to texts, listen to music, and occasionally google stuff.
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The reality is... By only doing small and short tasks at a time, it uses more battery. Stopping and starting lots is a lot less efficient than constant running. I am able to get about 4 hours SOT if I do small tasks, nothing prolonged, but if I stream films or longer stuff, I get 5.5-6 hours SOT. It may be worth you looking at one of the scripts for the EX kernel governors, as one of them optimises battery life for users that don't have heavy usage. Do a quick forum search for it, it is worth a try!
The most important thing is to not focus on whatever figure you get for your SOT, as long as the battery lasts long enough between chargers that it is 1) better than your previous device and 2) good enough that it does not run flat between charges, then there is no real issue. People tend to focus on SOT as a defining factor of battery life, when it isn't the only thing to focus on!!
Hope this helps somehow.

Check to see what is syncing for your Google account. I had a ton of crap syncing that I don't even use. I restricted it just to mail, contacts and apps. Also, lock WiFi on to 2.4ghz instead of automatic. Turn off automatically scan for new networks.

Yeah I realize the thing about SOT. I was just giving it a number. Honestly the battery life just doesn't impress me. I wish it lasted until I went to bed, not just when I got home.

jdubya42 said:
Yeah I realize the thing about SOT. I was just giving it a number. Honestly the battery life just doesn't impress me. I wish it lasted until I went to bed, not just when I got home.
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It is possible. I started off with diabolical battery life, but now I get through the day with ease. My only issue now is standby time, it is lacking a bit...