yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] 309041291a:
Overview

Graph

Screen

Moderate-Heavy usage. Constant WiFi when screen on (unless I was playing a game: Deadspace/Temple Run 1+2). A ton of texting (about 500+ texts). Lowest brightness. No data (just WiFi).

Pretty good but if I tried this using data I would only get like half of this. Idling when listening to music was amazing (lost nothing in an hour), overnight idle was around 4% in 10~ hours.

I'm running the currently latest (01/24/13) Trinity kernel totally default settings on AOKP build 2. Using autostarts, adaway, and that's pretty much all the info I can provide :P.
[Nexus 4 General] Exodai:
Do anyone know why the messaging app is eating up so much juice? I haven't enabled data traffic after disconnecting the charger nor sent/received hell even opened the messaging app.
[Nexus 4 General] gsusx:
How the hell do you get no drain on music, mine eats it up :|
[Nexus 4 General] 309041291a:
No idea, I've never had it.... But* when I listen to music within that charge cycle the normal idle period will drain (like this one). If I don't listen to music I get flat idle. So I guess that's the compensation :P
[Nexus 4 General] Ace42:
After following the battery improvement thread my WiFi performance is better for even after using YouTube and games like most wanted, temple run, browser, etc.
[Nexus 4 General] veryjiggy:
What changes did you make?
[Nexus 4 General] Ace42:
Flashed the stock image then went back to my custom ROM and kernel. There's a thread about it in this section. Before I couldn't get 6hrs on WiFi but now I can.
[Nexus 4 General] wilcoholic:
Can you guys use your phones more rather than trying to break the record for best screen time.

When I see things like wifi, android system and phone idle dominating the battery stats and when phone calls and browsers are occupying the lower regions... well thats just a dead giveaway that you have haven't been using the phone at all like normal people do. and are probably just playing with the settings a bit or looking at a black picture.
[Nexus 4 General] undercover:
What would looking at black picture versus white picture do for battery life? Just curious :rolleyes:
[Nexus 4 General] Ace42:
White is more efficient than blacks on ips. Black is efficient on oled/amoled technology. I don't recommend viewing a lot of black or using lots of black themes because that color is bad for IPS.

---------- Post added at 01:24 PM ---------- Previous post was at 01:19 PM ----------

I do use my phone. I am not personally big on voice calls, I text everyone now with the exception of certain ppl. And browser was present in my screen shot but as you saw media server was higher since I used YouTube and music player for much longer. Not everyone makes dozens of calls though, you have to remember texting is very popular now. ;)
[Nexus 4 General] DowntownJeffBrown:
Why do u care what other people do on their phones?

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] undercover:
Ahem. I was being sarcastic ;)
[Nexus 4 General] Mr.Mischief:
I think we've been through this at least twice now.

Let me say it again:

Not every app that is used shows up in the graph. If you had an Android phone and/or you looked at the battery stats, you'd realize this.

Move on.
[Nexus 4 General] DowntownJeffBrown:
This ^^^

Thank you I've had say that same thing so many times I just wanna shoot myself

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] wilcoholic:
Wrong. I have used android for years and I know for a fact that screen, facebook app, phone calls, browser would dominate the battery charts. And I know for a fact that when wifi, phone idle are dominating the charts that you have barely used the phone at all.

Don't lecture me about android
[Nexus 4 General] DowntownJeffBrown:
Wrong. Here's an example http://xdaforums.com/showthread.php?p=36954251

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] The.Penguin:
I got decent battery life on first cycle. Faux kernel on baked 7
[Nexus 4 General] rojovelasco:
Here is my result. Pretty impressive for me. Take into account that I have used my phone on mobile the most and have a few sync accounts.
[Nexus 4 General] tooeasyforkevin:
That happened to me once when I turned off data, and someone sent me an MMS. I guess it stayed away trying to retrieve it?
[Nexus 4 General] ock:
I find this strange. Surely lighted pixels require more energy regardless of screen type? I agree IPS screens are less efficient than AMOLED when displaying black
[Nexus 4 General] Ace42:
http://www.oled-info.com/lg-oled-vs-ips-lcd-power-consumption-slide

Actually that is stated by LG.

http://www.engadget.com/2012/04/13/lg-renames-optimus-lte-to-optimus-true-hd-lte-disses-samsungs/
[Nexus 4 General] ock:
Thanks for the link. I'm surprised that displaying a black screen uses just a little less power than displaying a 100% white screen. I guess that almost flat line means negligible differences between the two.
[Nexus 4 General] undercover:
You seem to misunderstand ground difference between amoled and lcd. Lcd panel has leds lighting up whole background at all times. Amoled lights up individual pixels and has no back light. This is why blacks are a lot deeper on amoled, but lcd is advancing and they are improving fast. Blacks on lcd basically cover up backlight as much as they can. I believe there are some tvs with sort of hybrid tech, where they have not just one big panel for lighting the whole screen, but many, and it can turn them off producing deeper blacks. Anyway, it's been long time since I looked into it, so I can be not 100% right.
[Nexus 4 General] ock:
That's true. IPS backlight is on even displaying black.

However I'm comparing black vs white background on IPS. Not comparing IPS vs AMOLED. And it doesn't show that using a black wallpaper is "bad for IPS" compared to a white wallpaper, and hence wanted to clarify the recommendation posted previously to avoid dark wallpapers and themes :)
[Nexus 4 General] undercover:
Oh, I see. Well, since light is on regardless, difference is miniscule. Unlike in amoled which actually uses battery to power up needed pixels. So on black it uses next to nothing, on white, it uses a lot. All them inverted gapps and dark wallpapers come from days when people where trying to extract as much as they could from the battery on amoled devices, mainly Nexus one and amoled desire. Then Nexus S and whatever Samsung equivalent was.
[Nexus 4 General] DowntownJeffBrown:
Well thanks to them then because I use everything inverted (gapps, tapatalk, everything I can). I love the dark colors hence why I love killrom and most recently Baked Blackbean (which is amazing BTW).

I hate AMOLED screens now though the N4 true HD IPS has forever ruined AMOLED for me. I can't even use my skyrocket or gnex without wanting to throw them at the wall now. Good thing my next phone I got coming is a HTC One x+ Lol. Black on a AMOLED is basically off which = the power save.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Ace42:
My bad I assumed that IPS & AMOLED were reversed when it came to black/white power consumption. Here's an article about black power usage.

https://www.scientificamerican.com/article.cfm?id=fact-or-fiction-black-is
[Nexus 4 General] Ysalamiri:
Facebook, dafuq? :')

I'm pleasantly surprised by Google Music though :)

https://dl.dropbox.com/u/16133920/Screenshot_2013-01-25-13-35-42.png
[Nexus 4 General] Ace42:
Anyone else notice that the battery is always identified as 1500mah? I think that needs to be investigated because if lg lied they can get into alot of trouble.
[Nexus 4 General] undercover:
I bet you use Battery Monitor Widget. It's an estimate.
[Nexus 4 General] wtfshouldidonow:
Are there any other apps that calculate the mA of our batteries? I just tried it and yes, it actually does report a 1500 mAh battery. 1500 to 2100 is a pretty big distance from each other to be an estimate if you ask me :p
[Nexus 4 General] wtfshouldidonow:
Oops, now it's showing 2100mAh already :D:D
[Nexus 4 General] DowntownJeffBrown:
Its supposedly because the battery is new type lithium polymer not ion so it registers wrong.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Cor-master:
I've always heard that there are no set standards to rating mah, so one companies 2100mah may be another companies 1500. Take the cheap Chinese batteries that all have ridiculous mah claims yet actually drain quicker than stock batteries
[Nexus 4 General] Ace42:
It might be newer but I'm not noticing advantages of using it.

Good to know.
[Nexus 4 General] DowntownJeffBrown:
I'm not either bro.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] SGS_elko:
AW: The great battery impression thread

Here are my 2 cents. This is from my second charge. Autobrightness on, Sync on, Google now disabled. This results are very good for my usage. I got max 2 hours screen time on my olg galaxy s. Only the voice calls should not eat so much battery, but 4.2.2 should solve this. All stock, no root :)
[Nexus 4 General] qkhang:
My battery lasts pretty much the whole day. In fact, its never run out on me before. I check facebook throughout the day, check the weather, make phone calls, text but that's pretty much it. Once in a while I'll game on it and still, it has great battery life. If I barely use the phone at all, when I get home from work, I still have like 90 percents battery life.
[Nexus 4 General] Mr.Mischief:
I'm running a 3G only battery test at the moment.

Looks like 2 minutes per %. Expect up to 3 hours of 3G time. I'm using Facebook, Amazon, Tapatalk, Chrome, and Pandora.
[Nexus 4 General] grtd11:
Don't know much about phones, but I understand the nexus 4 uses a lipo battery, probably 1s or 1 cell. 3.2v - 4.2v

I use loads of these type of batteries in rc planes (3s or 3cells, 12.6v) and we use meters to detect bad cells in packs.

The bad cell usually has the characteristic of rapid charge/discharge cycle.

Lipo's will deteriorate over time, more rapidly if you abuse them, but it is also possible to get a bad cell in a brand new lipo, this usually relates to the manufacturer and their QC controls though.
[Nexus 4 General] wasya152:
This makes sense. Some people are reporting great battery life.
[Nexus 4 General] aceo07:
It's at Auto, around 30%. I received the phone around evening time, so I haven't had to bump it up higher.
[Nexus 4 General] sarkster:
After grumbling about the way this battery performed on its first discharge it now seems to be doing very well although granted I an far from the heaviest user.

I have auto brightness, sync on, all Google services on, WiFi on, FBI sync hourly. The only thing I do try and do is manage the settings where I can so mobile network is off and I force 2g only when I am on WiFi then I turn them back on when turning WiFi back on. When I goto bed I turn everything off except 2g data and the phone lost 5% battery overnight.

My usage of the phone has been light texting, emailing, fbook, a fair bit of picture and photo sphere stuff, 20 mins Google music streaming and general web browsing but I tend to use my N7 at home.

I am pretty happy with the stamina of the battery in my light use case, I will reserve judgement on it in its entirety until I find myself giving it a battering at some point soon.
[Nexus 4 General] alpha beta gaga:
thanks i'll disable that and see what happens
[Nexus 4 General] :
Glad to know that you're happy. Anyway, you have a terrible battery life, if we ever have a software fix, then you'll be happier :).

This morning, after 1h screen turned on and YouTube 30mn, calls, browsing and sms i had 85% battery left.
[Nexus 4 General] Stretlow:
That's my problem. I love the wonderful screens and like to have my brightness high, might have to settle for 50%
[Nexus 4 General] jaZzyjeff818:
I turned off NFC as someone here had recommended and it seems to have helped with battery life.
[Nexus 4 General] alpha beta gaga:
yes that got rid of 1 of the 2 maps services running. the other that was still running (googlelocationservice) was set by having 'wifi & mobile network location' enabled
[Nexus 4 General] jaZzyjeff818:
I've noticed my phone charges up fairly quick. Could the battery be bad?

Edit: Just saw it go down 2% in about a minute.
[Nexus 4 General] wizzywig27:
I also posted this in the other battery thread:

I have to say I am less than impressed with the battery life.

After the first full day yesterday here is what I find:

Took off charge at about 8am – lasted me until just after midnight, Android system used 10%, screen 65% (screen brightness was about half way) and I had 4hrs 10mins with it switched on. T be fair, I didn’t do anything on it, wifi turned on all day (although using mobile data until I got home at 5:30pm) – some slight facebook usage, weather widget updating etc. some very small web browsing but a lot of text messaging (hence the screen on time).

Today so far lost 14% in an hour. Screen on for the majority of the time, as well as wifi (just turned off), and screen is on auto. I done some web browsing and texting. I actually lost 3% battery in 6 mins whilst sending a text.

My S3 was much more reliable, the way things are going this will not last me the day. Bothering me that much I think I want to take it back.
[Nexus 4 General] grtd11:
I don't know to be honest.

I believe the lipo's are sealed into the phone, so probably the only way to find out is to try and get as many other user's charge times and compare to yours, does the manufacturer give details about charge times? If they do you could use that as a guide, if your times are a lot faster or take a lot longer that could be an indication of an issue.

(I use the word 'lot' this to me would be a lipo charging in 10 - 20 mins when I expect it to take an hour or take 3 hours/never reaches full charge.)

In most of the packs used in rc the cells are in series so a meter is used to compare each cell against the others' rates under load.

The cells need to be of equal discharge and it becomes really obvious if a cell is faulty as the readings on the bad cell drop faster.

We also check our lipos when we first purchase them as all the cells need to be balanced, if they are not this can be an indicator of a faulty cell.(The cell isn't holding it's storage charge even though it hasn't been used.)

I have personally noticed that when I squeeze a bad cell, whilst connected to my meter, the reading shoots up so it must be something to do with the structure, they also feel soft/puffed when compared to a good cell.
[Nexus 4 General] sarkster:
It's no worse than my hox.
[Nexus 4 General] ludovicien:
I think I have a problem with my battery. Last night, on a full charge, with wi-fi off and the 2G networks only box checked, the phone lost 42% over 6.5 hrs. So that is with screen off and no synching enabled. I used CPU spy as suggested by many on these forums and Iit does not look good. Here's some pics. Please let me know if I have a defective phone. I've had the Nexus 4-6 days so suppose I can send it back, if it's defective or is there a simple fix to this.

Many thanks in advance.

Matt
[Nexus 4 General] Stretlow:
4 hours ten with screen on is good.
[Nexus 4 General] grtd11:
I think I read somebody's post that said the battery discharges to 3.5v ?

I reckon this could safely be reduced to 3.2v (by hack?) without any adverse effects on the battery and would give extra voltage to play with.

However, I don't know that for definite and I'm sure the manufacturer set it at their chosen voltage for a reason!
[Nexus 4 General] keepittidy:
It would be interesting to see if the people who have reported bad battery also have quick charges too.

I am quite pleased with my battery life considering all the bad reports out there and mine takes ages to charge... So maybe as pointed out earlier in this thread that a symptom of a dud battery is that it charges quickly.
[Nexus 4 General] alpha beta gaga:
quite impressed so far with mine even though I had maps processes running without realising that have now been disabled
[Nexus 4 General] ludovicien:
Thanks for posting that. After seeing how much your phone's performance differed from mine I contacted support and they are sending me out a new one. Obviously that is going to take a while as there aren't any available. The support person said that it would take at least 3 weeks. But at least I get to keep using the one I have until its (hopefully) non-defective replacement arrives. The process took around 20 minutes on the phone and was very easy. Return is by prepaid label and there is no fee to pay, in case anyone is interested.

Matt
[Nexus 4 General] wizzywig27:
Ok, here is an update

Just been monitoring it for 10 mins – was browsing play store or looking at CPU spy, it lost 6% battery in 10 mins! Brightness on auto, wifi off, nothing running in background. I am taking it back, worse than my iphone.
[Nexus 4 General] Tarun95:
Can somebody explain what's wrong with my phone ? It discharges while connected to the charger at times :( I put it overnight and morning when I woke up its at 55% :(
[Nexus 4 General] undercover:
I had that when my usb cable was faulty. Try different one.
[Nexus 4 General] Tarun95:
The cable is perfectly fine and it happens only at times.
[Nexus 4 General] singhsinghy:
I had this problem when I had a usb extension from my charger. Looks like the nexus sucks more juice to charge the battery than my HTC Desire HD. If you have a usb extension on your charger, remove it!
[Nexus 4 General] Younggun123:
I had the exact same problem with my N4. After trying various solutions with none working, I ended up getting Goggle to RMA it.

---------- Post added at 08:53 PM ---------- Previous post was at 08:28 PM ----------

Hmmm, just got my RMA yesterday. Currently on the first full charge just shy of 50% remaining. If the second half is consistent I will be at 6 hours screen time with 22 hours total time on. Quite happy as my old one could break 4 hours but not much more.

This new one is HW ver11. My old one was ver10. All on stock kernel and ROM.

Most of my use today was email, surfing, about an hour of gaming, and streaming Song a of 3 hours. On WiFi about 75% of the time.
[Nexus 4 General] Tarun95:
Nope and I noticed that if u use the phone while charging it barely charges. I have another n4 charger. Will try using that for a few days and see if the problem persists :)

---------- Post added at 09:27 AM ---------- Previous post was at 09:25 AM ----------

I stay in India. I ordered my phone through shopandship. Can I get a replacement as well ?
[Nexus 4 General] Younggun123:
I doubt it ... but I don't know for sure.
[Nexus 4 General] cobyman7035:
4 G 1 hour usage lost 25 percent using YouTube Google Voice surfing non stop 4 G is this good or bad

via my NeXus⁴ using XDA Premium
[Nexus 4 General] Jayrod1980:
With harsh, Franco, or trinity the norm seems to be about 5 hours screen time on mobile unless you are gaming and about 6 if you are on WiFi... At least that's what I've experienced with pretty much everything on and synced. You could probably get more if you turn off Google now, location, etc. But if you are going to do that, why own a smart phone right?

Sent from my often RMA'd Nexus 4, So that I can use the one I'm using now when I get the 6th and hopefully final one.
[Nexus 4 General] Younggun123:
What I can tell is my experience. I had the same issue as you with inconsistent charging, and had the phone rma'ed. My new one does not have the issue. So I thought I would see if I have the same issue with the old N4 with the new power supply. Charged up flawlessly. I've only tried it once, but I'm leaning towards the power supply as the culprit.
[Nexus 4 General] juliano_q:
Coming from a Galaxy Nexus I am loving the battery life of the N4. Much better with the same apps running.
[Nexus 4 General] DowntownJeffBrown:
I know what your saying I have a Gnex and a Skyrocket that I bounced between prior to getting my N4 and 5 hours of on screen with the same apps and setup is just sweet.

Sent from my Nexus 4 using Xparent BlueTapatalk 2
[Nexus 4 General] cobyman7035:
you have 90% left after how many standby hours? i'll be lucky if i get 90% left after 4hours on standby!

whats the normal standby lost per hour? 1%? assuming no wakelock issues and everything off, no sync, no location etc
[Nexus 4 General] Younggun123:
Right now I'm running on a low use day. 10:30 total time on, 1:15 screen w/79% left. So good example of stand by battery life.
[Nexus 4 General] xfactor2000:
AW: The great battery impression thread

I think the battery is great on wifi. I get 5 hours screen time. But when I leave the house, 3g kills the phone. I hardly get 2 hours screen time(normal use, no gaming). I am using Franco kernel now and tried every possibility I found here but I doesn't get better. I think I will wait for the next Google update and when nothing changes I will sell the phone. That's sad because everything else is very good.

Gesendet von meinem Nexus 4 mit Tapatalk 2
[Nexus 4 General] onekon:
Have you tried harsh kernel? I have had fantastic results with harsh kernel.

Also if you turn off your locations services in settings

Also in maps/ settings

And chrome/settings

You will see a dramatic improvement in battery life.

I went from 2-3 hours on stock 4.2.1 with hsic wake locks going wild to 18-20 hours with PA 2.99 beta 3 and harsh

Just my experience.
[Nexus 4 General] xfactor2000:
Yes. I have turned off everything (maps, now, locations, sync ... ) already. I tried to flash harsh kernel over franco and used faux kernel reset, but didnt work, so i had to go back to franco r53. I use stock rom. Do yout think PA 2.99 will make a big difference?
[Nexus 4 General] :
AW: The great battery impression thread

I finally got over 5 hours of screen on. I must admit that it was rather light usage with WhatsApp, XDA and NINE (9gag client), but 5:30 hours are pretty good anyway.
[Nexus 4 General] jhericurls:
I needed to get the most out of my battery yesterday as I was out all day. Put it on 2G only and getting amazing standby time. Average 1.7% per hour, over 17 hours with 1 hours screen time, still with 66% battery left.
[Nexus 4 General] nikzDHD:
First cycle of Franco kernel on PA. Played a bit of Temple Run 2 swell, but mostly sms messages sent and general usage and left it overnight as well.

Not too bad at all. Would be different with 3G and bad signal.
[Nexus 4 General] cobyman7035:
you have 90% left after how many standby hours? i'll be lucky if i get 90% left after 4hours on standby!

---------- Post added at 07:35 AM ---------- Previous post was at 07:24 AM ----------

so im back on r23 franco, last 7hours standby mode, i 've lost only 2% ( from 100%) screen off mode, but according to cpu spy plus my deep sleep is only

75%?
[Nexus 4 General] onekon:
Depending on your rom you have to first flash the original kernel via fast boot then flash harsh kernel, as Franco modifies the ram disk.

I also used Franco on PA then tried flashing harsh but got stuck in a boot loop.

So what I did was flash the original boot.IMG from my rom , in this case PA via fast boot then I installed harsh.

If you need more detailed instructions let me know.
[Nexus 4 General] sidamos77:
AW: The great battery impression thread

Mine loses about 0.5% or less per hour on WiFi standby.
[Nexus 4 General] cobyman7035:
Lost ony 2% on stanby last10hrs.. Good rjght
[Nexus 4 General] cobyman7035:
lost 6% in 18hrs of screenoff/standby, this is normal? 97% deep sleep according to cpu spy plus(ifffy stats sometimes by this app) seems broken to me:mad:
[Nexus 4 General] Ace42:
18 hours is a long time so it seems plausible. Plus you had apps waking the device according to your post.
[Nexus 4 General] trumanwu:
I got the same/similar result with stock kernel/ROM.

---------- Post added at 05:40 AM ---------- Previous post was at 05:24 AM ----------

pretty good. I am on Faux123 kernel. about 3% for one night.
[Nexus 4 General] NardVa:
I get 3 hours screen time on HSPA+ all day and 5 hours screen time if I stay on Wifi all day. This is under the regular stock kernel.
[Nexus 4 General] razball:
What rev do you have ?
[Nexus 4 General] BadarChaudhry:
Today I had worst battery life on nexus 4
[Nexus 4 General] NardVa:
Rev10