yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] blackdragon5040:
Battery impression

So here's my battery impression :

1. I typically get about 12 hours battery life with light usage, which is bad in my opinion

2. Usage : Light. About 30 min Currents reading, a few google searches, sent and received a few whatsapp messages, read some emails in GMail, did some calculations, installed an app from Google Play, used Wunderlist a bit. On silent most of the day (at school).

3. According to the battery stats, 30% is used by Android OS. It seems really high to me. Should be around 8%. I've occasionally seen Google Services using a lot of battery. I also see a high maps usage sometimes (like today).

4. Screen on : about 2 hours

5. Brightness: Auto

5. Wifi and 3G always on. about 9 hours Wifi and 2 hours 3G.

7. Haptic feedback: No

--

ROM version : Stock 4.2.1 (JOP40D). I flashed it clean using the factory image from Google.

Kernel : Stock from JOP40D

--

I've just flashed Franco Kernel v28, which apparently has battery fixes. I'll post an updated battery impression in a few days...
[Nexus 4 General] shotta35:
That shows Google Maps using tons of power as well which would involve Android OS for location services. Make sure you turn those off (in Google Maps settings).

I'm at 1.5 Days now with 3hrs of screen usage and 1 hour of phone calls (well 55m 19 seconds if you wanna be picky :p) only 18% left though but that's good enough for me. This should last me till I go home but if not i'll just start charging her up now so it will last me till i get in.
[Nexus 4 General] DowntownJeffBrown:
Wow that's all the screen on time u get.:eek:

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] jvbferrer:
I think that the factory image from Google is likely broken. I mean, I had a stock device that had an awesome battery consumption, but because of other reasons, I had to reflash the rom. Then, the Android OS started to drain the battery. Anyway, the new device from RMA has the same issue but it is full stock.
[Nexus 4 General] Evil_munki:
After 26 hours my phone powered down, with 3 hours screen on time. From the sounds of everyone else's performance this feels very average to me.

My idle drain has been optimised, so it's around 0.3-0.6%. During that 26 hours, wi-fi on, Google Now on, screen brightness at 10/15%, reception was average, no videos/games. I'm stock rooted with FrancoR28.

Is this battery life acceptable/comparable with others?
[Nexus 4 General] zevim2005:
Stock kernel sucks....i barely managed 2 hours screen time,nows with franco kernel+mincoo
[Nexus 4 General] spacemanvt:
I just received my nexus 4 yesterday and this is what I have found with one full charge (battery is about to die):

13 hrs 30 minutes on battery

Screen 43% of use - 3 hours Screen on.

Media Server 9%.

Its crazy because the phone was in my car for 8 out of the 13 hours not being used. and went from 100% to ~50% in those 3 hours.

Is this how it will be unless I get francos kernel?

Should I go ahead and do that?
[Nexus 4 General] razball:
Question im getting on average 2 hrs screen on time and thats with decently heavy usage and with mid to light about 2 and half hrs so just wondering from the people that got theirs replaced did you see better battery life.
[Nexus 4 General] dirtyhamster73:
My original n4 is a hw version 10...I needed to rma it and the new phone is a hw version 11. My original has awful battery life and the new n4 gets about 6 hours more than the original. So yes, I see much, much better battery life with the replacement.
[Nexus 4 General] DowntownJeffBrown:
I never got mine replaced and I've got a Rev10 and I get about 4 to 4 1/2 hours every day with heavy usage I'm on cm10.1 with motley exp10 kernel. My fiance has a rev11 and gets the same 4 to 4 1/2 hours but she has a stock kernel with cm10.1 but she has light usage and can go 2 days on 1 charge.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] razball:
Sorry what is rev 10 or hw 10 and okay hmm

I'm on milestone 1 AOKP and matrix 4.5 and its just bad.
[Nexus 4 General] spacemanvt:
how do you know what hw revision you have?
[Nexus 4 General] Cor-master:
Mine was the same way until I shut off "report from this device" option in Google maps. Now I get around 16 to 20 depending on my usage which is very good imo because even on my old Captivate I was lucky to get 10 hours
[Nexus 4 General] DowntownJeffBrown:
If u want to see what revision u have the easiest way is to reboot into bootloader mode it will show it on that screen

If u don't have a custom recovery while your phone is off hold down your power and volume down buttons. If u have a custom recovery most ROMs will allow u to reboot into bootloader mode. While your phone is on hold down your power button go to reboot then click bootloader.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] KingBeike:
I am very impressed ! Got the Phone yesterday ...

Cm 10.1, Franco 28, max 1026 MHz, mostly wifi, Google now and most syncs off, auto brightness
[Nexus 4 General] Kazliux:
Question about Nexus OEM charger.

Does it make clicking sound whole it's in socket? Mine does, sounds wierd :)
[Nexus 4 General] DowntownJeffBrown:
Hmmm interesting. Do u mean the charger itself? Or the phone while charging?

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Kazliux:
It's charger itself. The sound is quite loud. Click, tick, click, quite fast. It clicks event I plug it out of the socket for a minute aprx...
[Nexus 4 General] spacemanvt:
can someone explain or point me to tutorial on how to install francos kernel?

do i need to root my device?

I am a android n00b :/
[Nexus 4 General] dirtyhamster73:
I've haven't used the charger yet, I bought the wireless charging pad, but I know the exact noises you mean, mine makes them when I have the phone on silent....drives me nuts. I have to uncheck "touch sounds" to not get them. I'll plug mine in with the usb to see if it makes them...I'm curious now.

---------- Post added at 07:46 PM ---------- Previous post was at 07:43 PM ----------

Yes, you need to be to be rooted to install Franco. I would read everything and anything on rooting, kernels and roms brute you even think about rooting. You have to educate yourself first so you understand what you're getting yourself in to and how to get out of certain situations should they arise, like "boot loops". It's not as simple as "installing Franco". Installing is the easy part but you really need to know what you're doing first.

Go to Franco's thread and read the first post. Then Google rooting for the nexus 4.

Start here-

http://xdaforums.com/showthread.php?t=2018179
[Nexus 4 General] DowntownJeffBrown:
OK I don't use mine cause I have a n7 charger that charges faster so I just plunged mine in and yes mine doesn't click but it does buzz pretty loud I think we are hearing the same sound just interpreting it differently mine also continues to buzz or click after I unplug it also. Crazy I just noticed it huh:confused:

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Freshly_Snipes:
I've never heard anything from any of my four N4`s. Sounds dangerous for you guys. Charges shouldn't buzz or click.
[Nexus 4 General] DowntownJeffBrown:
I don't use mine I never have I'm glad I haven't now lol.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Jayrod1980:
Good mentality but lithium polymer batteries don't age like lithium ion batteries. Newer li po technology also allows for substantially more charges than lithium ion.

Sent from my often RMA'd Nexus 4

---------- Post added at 08:46 PM ---------- Previous post was at 08:44 PM ----------

Ha... When i want a nice fast charge i use my 2 amp nexus 10 charger. Never makes even a sound. Charges nice and fast too.

Sent from my often RMA'd Nexus 4
[Nexus 4 General] dirtyhamster73:
I have no buzzing, clicking, moo'ing, barking....nothing. *whew*
[Nexus 4 General] DowntownJeffBrown:
I always use my N7 2 amp charger that's why I never knew mine buzzed before I had my N7 I had a Samsung 2amp charger from my Samsung tablet. Love 2 amp chargers :thumbup:

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] @rbiter:
I am a quacker.

Sent from my GT-N7100
[Nexus 4 General] Rivermind:
Just to clarify, no you do not need to be rooted. You only need a unlocked bootloader to flash the kernel from fastboot or a custom recovery. You do need to be rooted if you want to flash the kernel with Franco's app.
[Nexus 4 General] Doddsy24:
I think I get decent battery life from my N4. With light use (just texting, 1 or 2 phone calls and wifi/3g off) I can squeeze a full day out of a charge. My biggest problem is poor signal when using 3g, like all phones, my N4 just drops charge at a ridiculous rate.

Overall I'm happy with it, although I am coming form a Desire HD!
[Nexus 4 General] dirtyhamster73:
And if he found he wanted to try another kernel besides Franco?
[Nexus 4 General] spacemanvt:
Thanks for the info, and so using the nexus 7 charger on the nexus 4 makes it charge faster?
[Nexus 4 General] Kazliux:
About charger noise....

It's seems popular

http://androidandme.com/thread/nexus-4s-wall-charger-humming-while-plugged-in/
[Nexus 4 General] DowntownJeffBrown:
Yes much faster I've never sat there and checked how long each charger takes but the N7 charger is a 2 amp charger do it will charge at a faster rate.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Ysalamiri:
I found the culprit! "Report location from this device." No idea what it does because my location is still updated, but turning it off has a serious impact on battery life :D

72% after 5h43m with the most use being the screen with 21% and Media server with 17%.

This makes sense because I streamed music while browsing facebook on the bus for half an hour :) So I'm quite satisfied now ^^
[Nexus 4 General] mk92595:
I charge my phone overnight so it doesn't matter long it takes to charge.
[Nexus 4 General] Cor-master:
Lol I've been preaching that since last Friday
[Nexus 4 General] DowntownJeffBrown:
People have been posting about this since Nov. When I got my N4 on Thanksgiving it was one of the first things I did.

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] davidsteele1975:
Using Location Reporting and Sharing is way heavier on the Nexus 4 compared with a slew of Android 4.0+ devices I've used over the last few months. If you have used it, take a peek at what it logs about your movements. It's pretty good at guessing stuff.
[Nexus 4 General] DowntownJeffBrown:
Yea I noticed that to I've never shut it off on any other phone I've had till my N4

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] davidsteele1975:
I wonder if it's a 4.2.x issue or the firmware / modem / network / radio issue with the Qualcomm S4 Pro chipset. Well we can speculate, but I'm sure Google will fix it.
[Nexus 4 General] icemasta31:
Delete. Found answer.
[Nexus 4 General] davidsteele1975:
Nae bother. Go into Maps, then Menu key to Settings, then Location Settings. It's in here. :p
[Nexus 4 General] Rivermind:
Use fastboot?

Root is only required when running a program from Android which requires superuser privileges. If you want to change the kernel from within Android, then yes you need to be rooted, but there are other ways (fastboot and recovery) to flash the kernel without ever escalating privileges.
[Nexus 4 General] Cor-master:
Well to be fair, I Googled "maps high battery drain android 4.2" and found a post about it at android Central and thats how I found our about it.
[Nexus 4 General] Z4nd4r:
Here's my wife's usage on her device, to show something that should be typical. Stock, no root.

WiFi - on

NFC - on

GPS - on

Location - on

Synch for most apps - on

Google Now - on

Brightness - auto

She's pretty much always on WiFi, so that makes a difference (though she was off of a WiFi network a few times during the day; she still keeps the WiFi radio on at all times, though). Her setup is with literally zero tweaks; she neither knows nor cares about turning simple radios on and off, much less how to root or throw on a custom kernel.

Just in case the photos don't post properly, here's where she's at:

18h 44m 45s

22% battery remaining

Screen 31% (#1 drain source)

Screen on 2h 47m 48s

It's not Earth shattering, but bear in mind she has done nothing to optimise her device (other than maybe turning off synch on Currents, which I did for her) and she leaves pretty much everything on but bluetooth. At her average rate of drain, she could have had 5 more hours of battery life with maybe a total of 3:30 of screen on time.
[Nexus 4 General] deepsunzhine:
Francos kernel r29
[Nexus 4 General] nikeman513:
Hey guys, I don't think this has been explained yet, so I thought I'd post and explain why Franco's kernel is allowing battery life to increase so dramatically. One of the major things Franco does is implement patches that Qualcomm release for the N4's kernel. Most of these patches are specifically to fix battery issues and to increase performance through tweaking the governor. I have heard some people say stock kernel is better, but that doesn't make any sense when considering that most of the updates/revisions are made by Qualcomm themselves. These are updates stock will eventually have, but through Francos kernel you don't have to wait for an official release if the update. I have attached explanations that Franco posts in his .apk that show when deciding to upgrade versions.
[Nexus 4 General] Androyed:
Could you provide us more info? Press on the graph for detailed info, and also show us the screen on time please. It looks really great! That graph is as flat as my neighbours chest.
[Nexus 4 General] DowntownJeffBrown:
I really hope so:thumbup:

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] shotta35:
These were added to CM10.1 as well but were later removed when they were causing issues with data/gps. They were removed from Franco also.

Stock is "good" but i'm sure those will be implemented in Google's next update to 4.2, 4.2.2 maybe/
[Nexus 4 General] deepsunzhine:
Whay do you guys think??? Is it good,????

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] canuckerr:
I'm super jealous. There is no way I would get this life without juice defender...

---------- Post added at 07:07 AM ---------- Previous post was at 06:56 AM ----------

Can someone explain the RMA process. I just checked and I have hw version Rev_10. I would like to RMA and get the updated Rev_11.

I currently have rooted and unlocked the boot loader on my nexus 4. Can I send it back like this or does it have to be stock?

Also, I won't be able to learn how to relock the bootloader and unroot the phone until feb. as i'm really busy with school at the moment.

And with the RMA, do they send you a replacement first? And then you send them back your current nexus or do you have to send in your phone first?

Thanks.
[Nexus 4 General] jark99:
Running rasbean jelly and Franco!! Very very pleased with battery life and this is only at 28%.

Sent from Nexus 4
[Nexus 4 General] Mr.Mischief:
With the risk of going off topic....

They send you a link to purchased a new phone. They don't charge you, but they do put a hold on the funds. Once it arrives, you send your old Nexus back with the prepaid shipping label they give you.

The bottom section of my screen doesn't work (Just the Home, Back, and Recent Apps area). I forced auto rotation, so now I'm using the phone upside down until I get the replacement: D
[Nexus 4 General] razball:
Thank you for the chuckle
[Nexus 4 General] deepsunzhine:
Franco's r30/ stock rom

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] davidsteele1975:
Impressive.

Some rumours of 4.2.2 being dropped, maybe this will have some improvements in the kernel.
[Nexus 4 General] deepsunzhine:
Yeah, just watched a video on youtube of a nexus 4 with 4.2.2

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] Sauercrowd:
Franco r30, stock rom

Auto brightness

Mostly calls, Whatsapp, facebook, Skype

Go_highspeed_load 70

Highspeed_freq 1026000

I'm happy with the results

Gesendet von meinem Nexus 4 mit Tapatalk 2
[Nexus 4 General] deepsunzhine:
No screen shot???

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] Sauercrowd:
Sorry, Tapatalk missed to upload the screens correctly. There you go.
[Nexus 4 General] deepsunzhine:
Where is it????:eek:

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] deepsunzhine:
Ur app is not uploading pics dude

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] Sauercrowd:
Okay, something is wrong with my app.

But chrome on desktop show´s 2 pics in my first post now. (maybe a refresh will help)

Sorry about that.
[Nexus 4 General] deepsunzhine:
This was my last screenshot, currently charging the phone... the only thing i did was flashing francos kernel with stock settings.... that's it..i can tell u...go ahead and flash it,its an awsome kernel...btw,this is the first time i flash a kernel and im so happy with the results...

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] Mr.Mischief:
I tethered for 45-60 minutes.
[Nexus 4 General] Domx92:
coming from s3, battery life of n4 sucks -.- i hope it will get better with 4.2.2
[Nexus 4 General] Jayrod1980:
This has got to be on Wi-Fi. Do it on mobile and I'll be impressed.

Sent from my 5th and final Nexus 4
[Nexus 4 General] deepsunzhine:
This was on mobile data, why you make conclusions something you don't know???....:beer:

Enviado desde mi Nexus 4 usando Tapatalk 2

---------- Post added at 06:59 PM ---------- Previous post was at 06:57 PM ----------

I used to have 4 hours screen time on stock kernel too.....:beer:

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] consolidate42:
Sorry, but 50% usage from screen is really not indicative of heavy 3g usage.
[Nexus 4 General] deepsunzhine:
Sorry bout u not being so lucky like me......loving my phone

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] consolidate42:
Luck really has nothing to do with it. All n4 batteries have 2100mah.

Power draw from screen can be assumed to be a relatively stable value. If 50% of your power was from from the screen, it can be reasonably assumed that you weren't doing any cpu intensive tasks.

I also know that Franco's kernel has extremely aggressive(and buggy) thermal throttling which pretty much shuts down even moderately long periods of high cpu frequencies.

If you haven't noticed a difference in performance, than all the more power to you, but I've found that Franco's r30 is a lot less smooth than stock and scores much lower on benchmarks.
[Nexus 4 General] deepsunzhine:
...

Enviado desde mi Nexus 4 usando Tapatalk 2
[Nexus 4 General] cobyman7035:
Who's phone does not get hotand cold normal on 4g lte usage?

via my NeXus⁴ using XDA Premium app
[Nexus 4 General] canuckerr:
Hey guys,

What is your number one battery drainer in your battery settings?

I just noticed that mine is:

Android system- 34%

Media server - 16%

Android OS - 13%

Screen - 12%

Player pro - 8%

Phone idle - 4%

mobile standby - 4%

Juice defender 2%

google services 2%

I swear the screen used to be number one on the list and now android system, media server, and android os have all passed it.

Anyone have any idea why?
[Nexus 4 General] azrash:
Get BetterBatteryStats, you'll find the culprit there. Search for it in xda, head over to the first few posts for how to, and read my general advice in my signature

Sent from my Desire Z
[Nexus 4 General] Androyed:
Sorry, forget I said anything.
[Nexus 4 General] Remcotjuuh:
I keep on seeing people with 4g lte on their N4s here, but wasn't 4g not supported? Sorry for living under a rock.

Sent from my beloved Nexus 4
[Nexus 4 General] Androyed:
Only a certain band, band 4. The band they use in Canada. And maybe some carriers in the US, I don't know.
[Nexus 4 General] Mr.Mischief:
T-Mobile is using band 4 for their LTE network.
[Nexus 4 General] consolidate42:
What do you mean by this?

I'm sensing some hostility for no apparent reason.
[Nexus 4 General] Androyed:
I'm sorry I said that. It seemed like you didn't believe his fortune with battery life because of your own misfortune. Whatever you thought, I shouldn't have said anything.
[Nexus 4 General] lightphoenix:
Prospective battery life! 22% after 38 hours.

Sent from my Nexus 4
[Nexus 4 General] Byemute:
Hey guys, was able to catch a n4 just before christmas.

Running on stock shipping build and also would like to share my battery life. I think there is enough space for improvement with the franco kernel and a good rom.
[Nexus 4 General] DowntownJeffBrown:
Just getting better and better on Franco all mobile data location settings off r31

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] canuckerr:
Wow, this program is very confusing.

I guess i'm a noob. I have no idea what I'm looking at. And even after reading a few posts from the thread I'm still confused... lol
[Nexus 4 General] 007shinobi:
Nice! If I recall, didn't you use to get 2.5 hours with your battery almost depleted? Amazing! I'm on stock with wifi and only getting 2.5 hours screen time at the moment. I'm considering flashing the kernel if your getting that kind of battery with mobile data.

Edit: sorry I think I was thinking of someone else that got 2.5 hours
[Nexus 4 General] DowntownJeffBrown:
Charge your phone up and set it after the charge to "since charged" then let it run after a some hours go by take some screen pics of kernel wakelocks and partial kernel wakelocks for help here. What you are looking for us how many minutes of certain wakelock you get. I have mine set up so its corresponding with the exact time the wakelock is keeping my phone on. That is time that its keeping your phone awake and taking battery time from your phone deep sleeping which saves battery. You can also set a custom reference or check it since your phone has been off or other options but if you plug your phone in your stats will start over except for since boot. There is other info too but that's kinda what you should start with

Sent from my Nexus 4 using Xparent Blue Tapatalk 2

---------- Post added at 09:59 PM ---------- Previous post was at 09:56 PM ----------

No that was me dude flash a kernel you will see immediate results and then can fine tune. I suggest Franco r31 or motley exp10

Sent from my Nexus 4 using Xparent Blue Tapatalk 2
[Nexus 4 General] Mr.Mischief:
Completely stock. On Wi-Fi all day. Note that I used the phone(as in calling) for over an hour.
[Nexus 4 General] yslreyes:
100% stock after factory restore

Sent from my Nexus 4
[Nexus 4 General] azrash:
That is very good for stock!

Sent from my Desire Z
[Nexus 4 General] Sauercrowd:
I'm on Franco r31 atm and the battery drained 0% over night. (with wifi & sync on)

http://db.tt/9x5NN3eO

Gesendet von meinem Nexus 4 mit Tapatalk 2
[Nexus 4 General] stuart0001:
WiFi or mobile data connection? If the latter then extremely good.
[Nexus 4 General] davidsteele1975:
That's good advice well put. :) And it's something I've tinkered around with on my stock N4, reaching the conclusion that the location based services and the modem kernel issue is keeping the device awake more than it should. Since I want the location stuff on and don't want to hack just yet, there's nothing I can do about it... so I take a deep breath and recharge more. :)

It illustrates why I don't believe the Nexus 4 is ready for the mainstream just yet. I have a couple of HTC's One devices, the V and S, which whilst the purist in me wishes it had a vanilla Android installation, that I can just add my accounts and go says an awful lot about how HTC have optimised and refined the device. They just work. The Nexus 4 hasn't yet reached this. Perhaps it will, perhaps the Galaxy Nexus is at this point, perhaps not.

However, I really enjoy using the Nexus 4 and I'm confident it'll improve. And I'm too lazy to tinker too much with it to extract a little more from the battery because I believe Google will do and are doing this for me. ;) #optimism
[Nexus 4 General] :
I was just browsing XDA app on wifi, but I guess this is pretty impressive, though.