yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] DowntownJeffBrown:
I got barley over 2 hours screen time on stock. Now I get 4 1/2 to 5 every charge I'm using CM10.1 Skanky style rom with Franco N20 kernel. Yes it makes that much of a difference.:thumbup:

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Jayrod1980:
Yes
[Nexus 4 General] muttley89:
I'm not impressed with the battery life. Coming from a Sony Ericsson Xperia Arc it was a great performance increase but am getting similar battery life and screen on times. I think the battery life is improving with each charge however. It just seems to drop way too fast when doing simple things like browsing the internet. I've lost 4% just writing this short reply..
[Nexus 4 General] CaspaTheGhost:
Its been established that the battery reporting on the N4 is borked so don't read too much into it, just look at those final results.

Sent from my Nexus 4
[Nexus 4 General] vindikleuk:
Have you tried leaving the stock ROM on and only replacing the kernel? I'm not sure if I want to go to cyanogenmod already, mainly because of stability reasons (and the camera's usually better on stock, but that might just be different this time). Would that have the same effect?

I'm really gasped as to what's causing this major battery drain. No specific app seems to be doing what it shouldn't, it's just... meh.

By stock combo you mean everything's stock? I'm really in the dark here, I used to be the guy that made friends' phones last longer by some tweaking, but now it feels like I just go thrown back in time 3 years! Haha.
[Nexus 4 General] draugaz:
Well, what do you expect?

Your Xperia Arc has a 4.2" display, 512Mb RAM and 5.5Wh battery.

N4 has a much larger 4.7" display (1.3 times larger surface area), a 1.3 times more dpi, 2Gb RAM and 8Wh battery (just a 1.4 times more).

More DPI means the screen is "darker" since there are more LCD grid lines per square area which obstruct lifght.

More display area means more energy for backlight. If you combine those two you will get a factor of 1.7.

More RAM means more energy to keep it alive (shorter standby time since RAM needs to be constantly refreshed all the time even in deep sleep). That is 4 times more RAM and would consume 4 times more energy all other things being equal.

So, given this context I think it is remarkable you are still getting comparable battery life, they made a fairly significant progress.
[Nexus 4 General] zaki67:
I expected a phone that I can use for more than a few hours! What goods are the specs if the only way to get decent battery life is to turn the phone off! At the end of the day I bought a phone not a gimmick If all this ram and screen resolution will make the phone worse then they should not have included them or they should have put a bigger battery. Usually each phone is better than the previous generation in all aspects specially designed battery life. This phone reminds me of the HTC desire in terms of battery which is simply unacceptable.. At least for the HTC I could install a bigger battery!
[Nexus 4 General] CaspaTheGhost:
Yes, a kernel change on its own will have an effect as mpdecision on the stock one seems to be the culprit if you don't have any apps causing wakelocks. It ramps the CPU to max with every interaction.

Nothing wrong with it, give it some time and also look at custom kernels. I can easily do 4-5hrs screen on time on mobile and 6-7hrs on WiFi like below.

And I do use my phone, everything is syncing on push and I haven't turned everything off like some! One thing to definitely turn off though is automatic location reporting.

I even use the Facebook app which is renowned for being badly coded and a battery hog.

The main battery drains are signal and screen, bad signal equals poor battery life. We also have a much more power efficient SoC.

Sent from my Nexus 4
[Nexus 4 General] draugaz:
well, then you did buy a wrong phone. Nowadays phone industry policy is dominated by a "thin is in" and "big is beautiful". The battery time and ergonomics are clearly not the first priority.

So, if 5-6 hours of display time is not enough to you, you should buy something else, like RAZR MAXX (HD).
[Nexus 4 General] zaki67:
I charge it twice a day and have tried 2 kernels so far, bought a few softwares but still battery life is not good. I think for a new device we should get everything working well out of the box and not to spend so much time just to make the phone last a whole day!
[Nexus 4 General] RealiZms:
Jesus Chr!st, if 5 hours of screen on time isn't enough you need to re-examine your life. Maybe get some fresh air, or go for a walk. Or hell maybe read a real book!

---------- Post added at 01:57 PM ---------- Previous post was at 01:55 PM ----------

Dude, what are you doing with your phone?
[Nexus 4 General] vindikleuk:
Alright, thanks for the info. So the stock kernel probably isn't all-perfect after all. I'm going to give this stock setup a few more days, and if it's still not improving I'll just have to get looking into a stock kernel.
[Nexus 4 General] draugaz:
It depends, life sometimes is a little bit more complicated than your usual home-work/school-home-... scenario. But I am not complaining.
[Nexus 4 General] CaspaTheGhost:
No, but 4.2.1 isn't perfect either. Hoping the big G pushes our 4.2.2 sooner rather than later.

Sent from my Nexus 4
[Nexus 4 General] Bluewall:
So guys I spent the whole day with CM kernel (which is the stock one, AFAIK CM didn't modified it)

Unplugged since 15 hours, 35% left with 2 hours screen on.

Reading your post, it seems I have a bad battery right?

Envoyé depuis mon Nexus 4 avec Tapatalk
[Nexus 4 General] gagdude:
IMO, that's not very good battery life. Try flashing Franco or the likes
[Nexus 4 General] kyokeun1234:
I have Franco kernel and my battery didn't improve from stock kernel... I'm also pretty sure that android 4.2 is consuming unnecessary amount of battery right now and should be fixed.
[Nexus 4 General] WibblyW:
Why is that in itself bad? If it ramps down again after the interaction, a faster CPU just means the interaction will finish quicker, right? Same number of clock cycles. So we'd be comparing slower clock/on for longer with faster clock/on for less time. Only difference in energy used for the interaction should be the relative amount of energy used per clock cycle when running the clock fast vs slow.

Of course if the clock isn't slowed down as quickly as it should/could, you'll be burning lots more of clock cycles than you need to when the tablet isn't required to do anything productive (between interactions/apps doing something useful)...
[Nexus 4 General] CaspaTheGhost:
Its bad as it doesn't need to ramp right up to max when I swipe to another home screen!

I understand where you're coming from perfectly but unfortunately we're not talking about race to idle here. The ramp up isn't proportionate and as you have eluded to in your second paragraph, its also not slowing down as it should.

Stock simply seems to run at min or max with max being the predominant clock speed. I use Franco's and I'm looking at a rough split of say 40% min, 25% 2/3 speed and 7.5% max.

Sent from my Nexus 4
[Nexus 4 General] draugaz:
Well, people *****ed about dropped frames, el goog got fed up and here we are.

Can't confirm. Aside from the deep sleep my stock kernel seems to be like 60% out of the time @min (384), the rest 40% are evenly split between 1.03ghz and 1.51ghz. All other CPU states are barely touched, something like 0.1-0.5% per state.
[Nexus 4 General] bash156:
Just thought I'd share my screen with you guys I did a full factory reset I'm running stock right now with Google now off got decent life out of it

Was only getting 2 n half hrs before
[Nexus 4 General] vindikleuk:
Just a quick heads-up: I'm off the charger for 11h30m now, got 31% battery left, with a screen time of 2h10m. I guess that's considered... bad.

I took a walk a few minutes ago, and that's when things really started to go down hill, in both senses of the word :b. Just look at the screenshot I attached. My battery would just jump down whole percentages at once (2-5% steps) in about 5 minutes of whatsapp-chatting with somebody, while turning the screen off and on while doing it. The experience isn't great when the phone's idle (i'll try BetterBatteryStats tomorrow), but things really get out of hand as soon as I'm actually using it! The rest of the day I've just used it lightly, a usual chat, but no games, no news checking, no nothing. It's such a shame not being able to use a smartphone as a smart phone because I'll have to fear for my battery life at the end of the day.

I was thinking of recalibrating the battery, but once it gets to 1% it actually does shut down a short while thereafter, it doesn't just stay at 1% for another hour. I guess that won't help either?
[Nexus 4 General] CaspaTheGhost:
Yep, that's project butter for ya! I'm going by initial experience along with the testing that has been going on in the various kernel threads. Like I said, I'm very happy with my battery life whilst running a custom ROM and kernel and I haven't taken a hit on performance either.

Sent from my Nexus 4
[Nexus 4 General] cobyman7035:
U guys with bad battery. Lower your you screen. Brightness to 25% or less

°°°Nexus™ 4 via XDA Premium App°°°
[Nexus 4 General] impruv:
Not good enough!

Ummmm.... HELP! Hopefully these screenshots can have some of you help me out.

Screen brightness is practically as low as possible.

3G at all times (no WiFi).

Using Franco r20

Stock Rom

Google Now/Location service on

Bluetooth/GPS off (Bluetooth on for maybe 15 minutes)

Social Apps/Email all synced (2 emails, FB/Google Talk/Twitter/Instagram/Whatsapp)

Autosync on

LINK TO DROPBOX ALBUM OF SCREENSHOTS

It would be great if someone could help me understand what's going on. Also, I forgot to screenshot the betterbatterystats since last charge rather than boot, but hope it still gives a good idea of what's causing my drain.

Thanks!
[Nexus 4 General] moses992:
Got my phone yesterday, the battery was almost full when I first powered it on ? (my friend was holding it for me but I dont think he charged it ..). Anyway, I set it up and played with it for a couple of hours at night. synced Google stuff,downloaded 30+ apps, restored more than 5000 sms/call logs from "SMS backup +", played a couple of videos from Youtube, bla bla you get the picture .. I managed to get about 3hours 25 minutes screen on time.

I think thats pretty decent for me, to say the least. Im coming from a SGS and it could barely give me 2hours 30minutes screen on time. Still cant judge standby battery life. ill report back in a couple of days :).

Oh and screen brightness was set at medium brightness for like 70% of the time, the other 30% was full brightness.
[Nexus 4 General] Silverspitz:
LG Optimus G (Nexus 4's twin device) seem to have longer battery life and screen on time
[Nexus 4 General] Gaheris:
Hi guys,

Is there anyway to prevent the battery drain of 10 % after rebooting?

Thanks
[Nexus 4 General] Demonic240:
Think this probably has something to do with lower battery life?
[Nexus 4 General] draugaz:
Is this really a drain or just inaccurate display?
[Nexus 4 General] jarjar124:
You don't lose 10% but you do lose battery once in awhile when you reboot
[Nexus 4 General] kyokeun1234:
Um... That's galaxy s3... Is it not?
[Nexus 4 General] :
It isn't drain, it is just displaying it wrongly. Use the phone normally for a few days (preferably without rebooting) and it'll gradually adjust itself.
[Nexus 4 General] masque3000:
Great Battery Setup!

1. Device: Google LG Nexus 4 (mako)

2. OS: Rooted Android 4.2.1 JB

3. Rom: CM 10.1 20121228 Nightly

4. Kernel: Franco r21 20121227 Nightly

OnDemand, 1.2 GHz max

5. Mods: Stock Emoji Keyboard; Banks Gapps 20121225; White CM boot animation

6. Call Setup: Voip (IN: GV/CallCentric/PBXes/CSipSimple, OUT: GV Callback+) T-Mobile calls fwd to GV; iLBC codec; TCP transport; Tasker (see below)

7. Tasker: WiFi-based profile-switching (Day/Home, Car, Night), VoIP Auto-Airplane Mode, Data Sync every 1 hr, SMS Check every 15 mins, Call Block, App-based GPS/location/NFC toggling

8.Misc Usage: Mostly browsing, reading xda app, few texts, avg 5 calls daily---1 or 2 longer calls, lots of screen on time, daily Titanium/Box backup, daily Nandroid backup, Brightness 0% & WiFi most of the day---138% & 3G when out, no haptic feedback, GNow disabled, weather updates every 2 hrs & at wake, 5 gmail accts, Fb, live wallpaper, recharge nightly with at least 30% to spare.

~ Sent from my Nexus 4
[Nexus 4 General] rttnpig]:
Stock 100%
[Nexus 4 General] John Anderton:
I've not thoroughly tested the battery life yet but in my 1 week usage I've had 1.25d worth of "normal" usage (browsing, WiFi on, NFC off, gmail and g+ syncing, camera for pics and photosphere, cellular data in HSDPA when out of a WiFi zone).

Looks pretty decent to me :)
[Nexus 4 General] UZ7:
Note 2 lol.. which is known to have 3100 mAh stock battery.. :silly:
[Nexus 4 General] kyokeun1234:
Oh :silly:

But my point is, why is this on nexus 4 forum? Look
[Nexus 4 General] kyokeun1234:
Not too shabby for nexus 4 WITH LTE usage and few minutes of NFS :p

Stock ROM with latest Franco (21)
[Nexus 4 General] alphamod:
Stop complain about weak battery. and start to act! here is my thread.

http://xdaforums.com/showthread.php?t=2064960

now seriously i see here a long threads and all people that complain how the battery sucks and weak and not enough for anything.

and when i suggest some good solution all people start to tell me how great the battery is and if i start to manage things and use it correctly

i suppuse to enjoy it and it will last for a lot of hours only if i am compromise and disable google now and a lot of things. so i tell you guys this

thread not for people who want to compromise my thread is all about people that want to enjoy and expericed all the nexus 4 has to offer

without changing million thnigs and be satisfied with avarge battery life. i am here for the people that want to enjoy everything nexus 4 without worry about battery life and i am offer you the best solution. unfortunley i didnt see anyone that suppurt my idea. until than continue to show and compare your avarge low battaries and give each other sugguestions how to squeeze more hour a two from her.

stop compalin start to act!
[Nexus 4 General] FormerSlacker:
Well another week and what I can say for sure is that Chrome uses more juice than Opera for whatever reason that adds up to ~45 minutes less screen time over the course of a full charge.

Like others have reported the battery also seems to be getting better after a couple of charges.
[Nexus 4 General] gie62001:
@alphamod I still don't get what your solution is to the battery problem? Are you still referring to Mugen thingy? If yes please refer me to any reliable source that said their battery technology is in any way superior to the current LG is using? And most of the time battery drain is related to rogue apps that are coded badly and don't let phone to go into deep sleep but also I believe there small problems with 4.2.1 itself with stock kernel as suggested by other users.

That said i still can't complain about battery as it's way better than my old HTC desire :) and it gets me through the day easily with average screen on time of 3-4 hours.
[Nexus 4 General] CaspaTheGhost:
Some people just ain't doing it right I feel...

Sent from my Nexus 4
[Nexus 4 General] phositadc:
WiFi was on and connected the entire time.
[Nexus 4 General] gohan040:
Stop giving this stupid solution!

Asking mugen to make a bigger battery for the N4 is no solution.

Also the battery is build in, so it's not that easy to switch the battery like for example a sgs2/3 ....

Would u also ask mugen to make a bigger battery for your Toyota Prius? (If u had one) maybe start a tread for that.......

The battery is 2100mah and normally it would be more then enough for average usage, only power users need some extra during the day..... I advise to take a charger with u or buy a power pack to charge when there's no socket available....

Stop complaining to start to act......
[Nexus 4 General] websiege:
So you sat indoors for 3 whole days, connected to WiFi just so you can post a 4h screen on time. WooooHooo......

You REALLY REALLY should get out more.

Oh and btw 4h on wifi really isn't all that great. Sadly every screenshot here is on wifi lately. Apparently no one uses mobile data anymore.
[Nexus 4 General] leventccc:
Best Battery

Motley EXP Kernel + CyanogenMod 10.1 = Best Battery/Performance Combo
[Nexus 4 General] phositadc:
LOL calm down broseph. I also have a different phone so I left this one at home when I was out. And I wasn't posting this to say it's good or bad. I was just providing another data point. Isn't that kind of what most of the posts in this thread are doing?

So pipe down, tiger.
[Nexus 4 General] Bluewall:
Stock kernel on CM. Do you think it's good?

Envoyé depuis mon Nexus 4 avec Tapatalk
[Nexus 4 General] moses992:
2nd report, this is after the first charge.

I should note the battery died down just when I was about to take some screenshots. so I had to plug it in for a minute or two and take the screenshots ^^`.
[Nexus 4 General] paulbeattie:
We do use mobile data but this is where the problems with the nexus come into their own. I've noticed this being home for Christmas that not being on wifi for data just sucks the life out of the battery. On mobile has been better since my nexus was replaced though. That said I'd still struggle to get 3 hours and a good day 12 hours on battery.
[Nexus 4 General] movielover76:
Agreed
[Nexus 4 General] rttnpig]:
Most of the time on WiFi
[Nexus 4 General] jonmorris:
I am not sure why some people are so keen to engineer best case scenarios to try and claim the battery is good.

I'm ill in bed at the moment, a few metres away from my router. The battery is great. But venture out and use mobile data only and the drain is huge. Clearly this could likely be fixed with an update (I don't fancy rooting or changing ROMs) but let's not pretend the N4 by default has pretty awful battery life.
[Nexus 4 General] lukesleepwalker:
After a month of varied use there is no doubt in my mind that mobile data is the main culprit for battery drain. Am I reading right that replacement phones have yielded different results using Mobile data? Strange...
[Nexus 4 General] acegolfer:
Use push notification (GCM)

If you want better battery life, use apps that rely on push notification rather than constant connection. Google "Google Cloud Messaging" to learn more about android's push notification.

For example, you can use IM+ pro for all your instant messaging. It aggregates many services such as Skype, AIM.

Use Vonage Mobile instead of SIP client.
[Nexus 4 General] sidamos77:
Push notification *is* constant connection. The other possibility is polling in intervals.
[Nexus 4 General] acegolfer:
Great to see ppl know the difference. Thanks.
[Nexus 4 General] InvalidUsername:
That's just one case. Push notifications can be used in the case of IM apps as well, where it is replacing multiple, independent open connections, not polling options.

For example, Android Skype has to be constantly running in the highest priority to tell you when someone sends you an IM/calls you. The iOS Skype app can actually be fully closed and will still notify you about IMs/calls through push. In this specific example, I've emailed Skype/Msft to change the Android version to also use push to avoid battery drain (I had to stop using Skype on my N4 as it was taking up to 50% batt with 0 foreground use). It remains to be seen whether the opt out is due to Android's unreliable push notification system, especially when compared to Apple's which is almost 100% reliable.
[Nexus 4 General] TeamAlpha:
Franco kernal and ParanoidAndroid. My standby performance used to be terrible before.
[Nexus 4 General] Luk_Sch:
In love with this phone. :beer:

AOKO Build 27/12 + Faux 3b5

Gesendet von meinem Nexus 4 mit Tapatalk 2
[Nexus 4 General] moghm:
All good at the mo. Was horrible the first few weeks.
[Nexus 4 General] hallucynogenyc:
Franco introduced a patch from Qualcomm that reduces the mobile network power usage quite a bit, you might wanna try it ;)
[Nexus 4 General] superleeds27:
So without having to plogh through 168 pages.

When i get my N4, what do people suggest?

Franco? and what ROM? Anyone tried Slim?
[Nexus 4 General] KtMack23:
I am getting terrible battery life

GPS Off

Sync Off

Mobile data off

WiFi on

Wtf
[Nexus 4 General] kyokeun1234:
Show us your screen on time please
[Nexus 4 General] KtMack23:
After just under 2 hours screen on time I'm at 52%

Is that normal?
[Nexus 4 General] Ace42:
It depends on what apps you used, your signal strength, and other variables. I have 15hrs, 2 screen, 58%.
[Nexus 4 General] PhilipL:
Hi

Yes, people are getting around 4 hours of on screen time on average so that is about right.

Regards

Phil
[Nexus 4 General] DogPsyche:
Gotta agree with this.
[Nexus 4 General] cobyman7035:
normal? in 36mins of power off, deep sleep mode

according to cpu spy plus

i got 92% in deep sleep, battery went from 100% to 99% in 36mins.... ok fine? it just seems when i use H/4g, the battery meter just tanks! 30mins browsing i will lose 5% at least
[Nexus 4 General] zaki67:
I think the screen consuming ratio is reasonable and comparable to similar devices but the network on 3g is far too high.
[Nexus 4 General] Gaheris:
and people say the n4 battery is bad. not with the real non-stock kernel. franco r22 which doesn't need uv rocks! Average use, syncs are off since I got only 50 megs a month.
[Nexus 4 General] Ace42:
Data usage really does murder the battery, hopefully an update can decrease the power usage. Until then I will use Wifi when it's available.
[Nexus 4 General] ksc6000:
Can we all just agree that WiFi battery life is great if you can manage your wakelocks and whatnot?

The main problem is that this is a

PHONE!!!

On 3G this has the worst battery life of any current high end android phone.

THAT is the problem.

---------- Post added at 02:53 PM ---------- Previous post was at 02:51 PM ----------

You mean in 30 minutes you would lose probably 30%. If you only lost 5% in 30 minutes of browsing on 3G, that means you get 10 hours of battery life, so that makes no sense.
[Nexus 4 General] jhericurls:
By them stats you'll get 10 hours screen time, so thats awesome battery life on mobile data.

But overall this thread is terrible, as peoples expectations are not being managed. There are people posting 6 hour plus screen time and to most of us that isn't achievable. Everyone uses their phone differently and there are too many variables. Instead, I see a lot of people sitting at home all day on Wi-Fi with a good signal and posting up their stats.

To make these stats more useful, it needs to state which ROM/Kernel and condition of usage.
[Nexus 4 General] ksc6000:
And show 3G/H battery life, not wifi.
[Nexus 4 General] phositadc:
OK currently draining mine from 100 to 0 using just HSPA. On just WiFi I get 5-6 hours screen on with 30+ hours standby. I'll be curious to see how I fare on HSPA. Hoping for at least 4 hours screen on.
[Nexus 4 General] jhericurls:
Your using the PA rom, which has awesome battery life. Like to see you get the same battery life on stock ROM.
[Nexus 4 General] ksc6000:
And on 3G, not just wifi.

This phone needs to be able to give us a minute of screen on time on 3G for every 0.42 percent of battery, to be considered decent (without mods, without turning everything off). Any less than that is pretty sad honestly.
[Nexus 4 General] r00t_user:
So beautiful! GSM galaxy nexus!
[Nexus 4 General] Ace42:
Psst that's nothing, I've gotten over 5hrs on the n4. :cool:
[Nexus 4 General] kyokeun1234:
Actually that's impressing for galaxy nexus. I've barely got 3 hours on that thing. And nexus 4 has bigger battery :p
[Nexus 4 General] r00t_user:
Yeah, that's the first time with the Gnexus myself, but I'm on break so no data was used that day.
[Nexus 4 General] fail50:
Does anyone know why the android system drain my battery about 5x%

thx!!!!!!!!
[Nexus 4 General] fail50:
here's the screen shot
[Nexus 4 General] Lockeskidney:
patiently waiting for google to push an update to fix the drain