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  1. oldpueblo's Avatar
    So from what I'm seeing, turn off every neat feature of the phone, have the screen set to the lowest brightness, and simply don't use the phone very much and battery life will be almost as good as a normal phone. Got it.
    No, as has been stated there are people using their phone fully just fine without compromise. What's happening though is a lot of battery saving tips being thrown around that are getting mixed in with those trying to diagnose a potential actual battery issue (OS or app or feature related). Some people claiming battery issues may not be having any actual issue and in fact just need a perception shift because they're coming from a vastly different device/OS and need to know how to manage battery life properly with a new OS. There is an issue here, but due to the randomness it could easily just be everyone installing the same popular app that's causing it. That's likely not it but my point is that it's all over the place so still too early to nail it down exactly. If we had 20 people hard reset their phones and install no apps and then report back in a few days, that would be a great baseline to figure it out.
    Last edited by oldpueblo; 11-15-2012 at 05:22 PM.
    11-15-2012 05:16 PM
  2. LazyLemming's Avatar
    So from what I'm seeing, turn off every neat feature of the phone, have the screen set to the lowest brightness, and simply don't use the phone very much and battery life will be almost as good as a normal phone. Got it.
    Or you can actually read the threads and notice multiple solutions before you post crap like this. Many people have found easy one time solutions that gives spectacular battery life without sacrificing ANY features. Those solutions have been reposted time and time again.

    Personally I really do think it's a combination of calibration and app issues. Draining the battery completely and charging to full has been necessary on many android phones and even a recommended solution for the Iphone's battery problems.

    Yes consistently draining a Li-ion to empty IS bad for it. Doing it once or even twice isn't going hurt it. If it was that easy to bugger one of these batteries, they would have so many repairs as to put them out of business.
    11-15-2012 05:18 PM
  3. irvin792's Avatar
    My phone gets extremely hot, I just did a hard reset and when it was loading all my apps from backup it got hotter than comfortable, and im really not exaggerating
    11-15-2012 05:24 PM
  4. Mpm277's Avatar
    I have tried all the suggested tips. If I need a reality check from switching to a different OS then it's a no brainer. I love the 920, but if this is "just how it is with this device/OS" then I'll have to go to something that can get me thru an entire day with moderate use of the phone. I don't think that's asking for too much. My two year old iPhone 4 currently has twice as good battery life. I hope Nokia fixes this before my time runs out to return it.
    11-15-2012 05:38 PM
  5. pjs37's Avatar
    I haven't read all the posts here but Could the reason be with LTE?

    I have got this phone yesterday in Turkey, and we don't have LTE here yet.
    Battery life has been amazing so far.

    I can't give exact usage stats but here is what i did today:
    - I sent and received 80-100 text messages.
    - Made 10 phone calls, about 1-2 minutes each.
    - Wireless and Bluetooth has been on, though i didn't browse much. Downloaded 2 games from the market.
    - 15-20 Minutes of gaming (Traffic Race 3D).
    - 20-30 Minutes of messing with the camera
    - 20 Minutes of MP3 playing.

    40% remains, it's been 12 hours since my last charge.


    Here is what i don't have
    - No Nokia Drive running in background.
    - No LTE connection, we don't have it.
    - No Data-plan 3G usage, i had been at home whole day, didn't need it, used wi-fi instead.
    - No heating issue as mentioned in other threads, it gets warm sometimes but, not getting hot.
    Well we have LTE in our area but my Lumia 920 isn't running on it at the moment (an ATT problem I need to correct) and I still have issues so i don't think that's the case but it is a good guess as LTE has been known to cause battery issues historically.
    11-15-2012 05:43 PM
  6. vlad0's Avatar
    Yes consistently draining a Li-ion to empty IS bad for it. Doing it once or even twice isn't going hurt it. If it was that easy to bugger one of these batteries, they would have so many repairs as to put them out of business.
    Yes.. they loose capacity over time if you keep draining to "zero"

    Here is a good paper on it:

    http://www.che.sc.edu/faculty/popov/...PDFs/Web33.pdf

    "A typical chart from industry studies, in this case from the Department of Chemical Engineering, University of South Carolina, Columbia (PDF link). The amount of theory behind the topic and the number of variables are somewhat very scary, but you can take from the chart above that as the number of battery charge cycles goes up, the voltage, capacity and performance all decrease dramatically - starting at 1800mAh, the tested battery was down to 1350mAh after (roughly) a year of simulated use."



    So keep it plugged in at all times if you have to, but don't drain it out every day... that is if you are actually keeping the phone, since the battery is sealed there is no way for an easy replacement. And.. even if you are exchanging it, I don't know if Nokia replaces the batteries when they refurbish the phones.. so, someone else might end up with your tortured battery.
    11-15-2012 05:44 PM
  7. gndmpnk's Avatar
    Well here is my experience with my Lumia 920's battery life.

    Got it on last Friday for the AT&T launch.
    The battery barely lasted 2 hours by the time it fully died.
    When it was finally fully charged it was already pretty late at night, So I set the phone aside and went to bed. When I woke up it only had 23% left... Was not feeling too good at this point.

    Throughout the weekend I still had abysmal results barely 9 hours. It was at this point I decided to do some research and found this thread and saw everyone's recommendations.
    I honestly tho at this point felt kinda cheated that I had to turn off certain live tiles and certain updates just to get any form of decent battery life. I also did see that the phone needs to be cycled a few times for the battery to work properly. So Monday night I completely drained the battery, let it sit for a couple minutes, then plugged it in over night and went to sleep.
    I woke up at 7 and unplugged the phone. I had decided to keep a little journal of the % and what I had done for the day just in case it did not get better I could take some proof to AT&T.

    Lucky all the tips everyone gave on the site had worked. I blocked all background task and I normally keep all other things turned off ie. NFC, bluetooth, location sharing. By the time I was done with work i was still at 60% with moderate use, which is not the greatest, but sure as **** beats what I was getting during the weekend. I did a simulated stress test that night to see how the battery would hold up with 1 hour of constant use and it had drained 30%. Not as good as I had hoped.
    Did the same thing on that night drained it completely and let it sit all night.

    This time on I decided to turn on certain features, Check email every 30 mins, allow Facebook to run in background, lock screen got updates from Facebook. Unplugged the phone at 7am, and with some low/moderate use all day until about 2am without a charge.
    I'm quite happy with the results, so I dont think I'll be taking it back to AT&T.

    Today I did another stress test and did 1 hour of video streaming on wireless at it only drained the battery by 20%, so the battery is improving.

    So anybody reading this if you are having poor battery life, you will just need to completely cycle the battery a few times. Yes we shouldn't have to do that but still as long as the end result is what we want then I honestly cant complain about it. I was worried at one point because I really do love the phone, but now I can say that I'm happy with the phone's performance.
    11-15-2012 05:49 PM
  8. Ron Paul's Avatar
    Yesterday I managed to get my Nokia Lumia 920 to run with moderate use for 15 hours. This included at least 5 hours of music playback, 1 hour of gaming, 30 minutes of calling and a few hours surfing and texting. The rest being standby. Then I messed up and let my phone die (fully discharge and turn off) last night.

    This morning I had a full charge. The phone had lost 5% while on standby for less than one hour. I grew concerned. The phone ended up only lasting 5 hours on the charge with light use. I just restarted the phone and am charging it back to full for another test run.

    Tune in tomorrow to hear of my outcome!
    11-15-2012 05:53 PM
  9. LazyLemming's Avatar
    Not sure if you're agreeing with me or not..

    But if you read the study you'll notice a few things, significant degradation does not occur until 300 discharges.

    secondly, it does not correlate to ONLY discharges to zero. You'll notice right near the top they discuss the issue of depth of discharge (basically how far you discharge it) While a complete discharge does have a larger affect on the battery, the wear shown by the study takes place even with partial charge/discharge cycles.

    A complete discharge WILL create more wear and tear on your battery, it only has a significant or noticeable effect if done continuously. A single full discharge is not going to have a notable effect on your battery.
    11-15-2012 06:02 PM
  10. leonbelize's Avatar
    I turned those two (NFC and Sensitive Touch) off and i'm at 50% after 9 hours of moderate-heavy use. BIG DIFFERENCE.
    11-15-2012 06:19 PM
  11. sleewok's Avatar
    I had a Dell Inspiron 6400. My roommate bought one 6 months after me. I "religiously" removed the battery when my device was plugged in. I also "fully" discharged it once a month. My roommate left his plugged in all the time. Guess what happened? His battery failed 8 months before mine.

    I started plugging mine in all the time, and the battery lost a lot of capacity (75%) 3 months later.

    Sure, not scientific, but definitely shows positive results for not constantly charging.

    Yes.. they loose capacity over time if you keep draining to "zero"

    Here is a good paper on it:

    http://www.che.sc.edu/faculty/popov/...PDFs/Web33.pdf

    "A typical chart from industry studies, in this case from the Department of Chemical Engineering, University of South Carolina, Columbia (PDF link). The amount of theory behind the topic and the number of variables are somewhat very scary, but you can take from the chart above that as the number of battery charge cycles goes up, the voltage, capacity and performance all decrease dramatically - starting at 1800mAh, the tested battery was down to 1350mAh after (roughly) a year of simulated use."

    Click to view quoted image


    So keep it plugged in at all times if you have to, but don't drain it out every day... that is if you are actually keeping the phone, since the battery is sealed there is no way for an easy replacement. And.. even if you are exchanging it, I don't know if Nokia replaces the batteries when they refurbish the phones.. so, someone else might end up with your tortured battery.
    11-15-2012 06:28 PM
  12. dkp23's Avatar
    I turned those two (NFC and Sensitive Touch) off and i'm at 50% after 9 hours of moderate-heavy use. BIG DIFFERENCE.
    I have those off, bluetooth off only weather running in background

    8 hours in i am at 32% with about 20 minutes of whatsapping, 1 minute phone call, 1 minute of uno that i got for 99 cents, about an hour worth of surfing and four app updates. Pretty crappy performance.
    11-15-2012 06:31 PM
  13. Bataar's Avatar
    Yeah, I'm thinking there's a problem with my phone. After letting it finally charge all the way down, I'm trying to recharge it. It steadily climed up to about 27% and then stayed there for a long time, quite a bit longer than it did in any previous advancement. I just checked it again and it showed only a 25% charge. Somehow, it lost charge while charging . . .:@
    11-15-2012 06:39 PM
  14. irvin792's Avatar
    I took my 920 I rcvd from att.com on the 13th back to a corporate store and the new 920 I recieved I hard reset as it had some video from whoever in china made the phone LOL. It bricked the handset, took it back again, thank god they had one more, this one is so far so good, got everything back up and running pretty simply, just had to redo a few passwords andset up my start screen again.

    Will report on battery life tomorrow.

    Not getting nearly as hot as the first 920 I had. Im gonna go on a limb and say that there are a few faulty batches of lumias out there with the faulty hard resets and the heating up issues.

    crazy
    11-16-2012 12:20 AM
  15. sandman's Avatar
    Had mine replaced yesterday. Full charge last night and today it went 14 hours and still had 30% left and this was with moderate-heavy usage.

    We shall see what tomorrow brings.
    11-16-2012 12:45 AM
  16. mikewp's Avatar
    After running the phone for 36 hours with modest usage.. few minutes talking, sending some texts, couple hours surfing, 8 updates installed, 30 min game, etc.. I had 15% left. Threw it on the wireless charger at 6pm and by 10pm it was fully charged. I'm happy with my Nokia phone.. as usual.
    ibbyj likes this.
    11-16-2012 02:09 AM
  17. igoramadas's Avatar
    So after all these complaints about the Lumia 920 battery, I decided to test my theory that background tasks and LTE are 100% responsible for all battery issues. Not sure which one, maybe both.

    Charged the phone overnight from Tuesday to Wednesday. Unplugged at 9AM, and left the phone on standby, didn't use it at all till last night 11PM - that's around 38 hours - and it still had 36% battery life. Had 3 accounts syncing every 1 hour, no background tasks, set to 3G only. It would easily go for another day especially after the battery saver mode kicks in.

    So I charged last night, turned some background tasks on (Nokia Drive, Nextgen Reader and Groupon), put it on 4G even if I don't have 4G, and after only 4 hours it has now 80% battery left. Just by "leaving" the phone on standby, I didn't browse or send emails, calls, nothing. On this pace it will need a recharge before the end of the day.

    Short answer: if you don't need apps to get updated on the background, turn their bg tasks off. If you usually have WiFi around, turn 4G off.
    Long answer: Nokia issued 4 firmware updates in less than 6 months after they released the Lumia 800. So we can expect them to improve the radio stack and their own apps sooner than later. But for other apps (weather, 3rd party maps, news reader...) please ask the developers to have a look on their background tasks implementation, this is not Nokia's or Microsoft's job.
    11-16-2012 04:28 AM
  18. downhillrider's Avatar
    Ok so I disabled NFC a couple of days ago as some suggested and today I got 13 hours of battery life. With semi heavy use and a couple of 4G hours. Maybe my draining the battery for a week that I've had the phone worked. Who knows.
    11-16-2012 04:51 AM
  19. pjs37's Avatar
    I tried turning of NFC I haven't seen much improvement not anything that would lead me to suspect the NFC including the fact my phone still randomly heats up when I surf the internet.
    11-16-2012 05:26 AM
  20. joeynox's Avatar
    I did the factory reset by going to setting and didn't see any improvement. I cant seem to do a hard reset. Is it done with the phone off or on? I tried off because I read make sure the phone is off.
    11-16-2012 06:12 AM
  21. guyverl's Avatar
    FWIW, when I block Nokia Drive+ Beta in background tasks and tick the 'Turn background tasks back on for this app the next time I open it'; Nokia Drive+ seems to instantly unblock itself. At this point I have just reset the phone and NOT started Nokia Drive+. This suggests to me that Nokia Drive+ is doing something in the background when it shouldn't be, given that I've not even started the app.
    11-16-2012 06:41 AM
  22. Tonystarks81's Avatar
    Whats up everyone, long time lurker, first time poster. I finally made an account to address some battery problems.

    Full Disclosure: Coming from iPhone 4 which I had to charge sometimes twice a day.

    I got my phone at lunch Friday: After going through Honey moon period I will post only my last few days stats....

    Tuesday: off the charger at 3:30 am (i woke up in middle of the night) to shutting down at 530pm Tuesday (14 hours)
    Wednesday: off the charger at 9pm, dead again around 4pm Thursday (19 hours)

    I usually followed the philosphy of running from 100% to fully discharged. However, i ran accross an article on lifehacker about smartphones that said fully discharging accelerates the battery life death process and you should usually keep it in the 80%-40% rule and recharge then.

    So last night I charged to 95% at about 8pm. When I went to bed at 10 i put the phone in AIRPLANE mode, when I woke up at 530 i was at 89% (loss of 6% in standby).

    Now on to my commute, 1 hour of streaming nokia music while simultaneously browsing the web. Wifi off, NFC off, brightness at medium, only Background task is weather channel app. No apps running in background. 2 email accounts syncing every 15 minutes. When i got to work, my phone was at 65%. Minus 24% for an hour of what I would consider heavy usage, thoughts? Streaming over LTE, browsing IE10, facebook and twitter. Thoughts?

    I love the phone, and its better battery life than my iphone 4, but that was a 2.5 yr old phone, am I short changing myself? Should I return this thing.
    11-16-2012 06:57 AM
  23. Grenzeloos's Avatar
    **First off -- Columbus Ohio LTE for AT&T is Live as of last night. 28Mb's down and 19Mb's up speed test average (10 test)**

    The above matters because this morning i'm at work and I have 4 bars LTE. Before I had 1 to no bars in 4G. I work inside a steel -20 degree freezer warehouse, with an enclosed office inside that. My phone has been off the charger for 4 hours I'm at 88% with 20 hours (Now states 87% with 1 day 5 hours as of 9:41 am Est.) remaining per native battery monitor. I had ~1 hour phone call on way to work, and downloaded 4 Bob Dylan all the Black Keys, Beastie Boys albums from Xbox Music while on phone. Yesterday I was charging my almost dead phone at this time of day. Is it possible that more then one radio is running at the same time? I also uninstalled the Nokia Drive Beta app completly. I have 6 apps permitted to run in background.
    Last edited by Grenzeloos; 11-16-2012 at 08:42 AM. Reason: Updated Information
    11-16-2012 08:09 AM
  24. Drazyw's Avatar
    My battery drained in 5 hrs today. I attribute it to the radios. It was in a parking garage with 1 bar of signal. I usually put it in airplane mode and it does well but I forgot today. Went out at lunch and it was almost totally dead.
    Welp, scratch that theory. I set it with Airplane mode on and left it in the car. It was dead in about 6 hrs of NO USE.
    11-16-2012 08:35 AM
  25. cbrunn2's Avatar
    Listen everybody if your not happy ... take it back and try to get an exchange device ...

    I to was having battery problems ... I took my phone back and get an exchange (because of freezing not the battery but you can try worst they can say is no) ... and with this new phone the battery life has been amazing yesterday and seems to be on par today

    I did not install the Battery Lvl app ... and I left off bluetooth and NFC as i don't need these things ... when I do i can easily switch them on

    Background everything turned off but for Weather (Microsoft Weather)

    Yesterday text and Whatsapp all day, a few short calls, and like 30 min Web Browsing , and like 30 minute MetroTube ... and went to bed at like 2am with 24% with estimated 24 hrs left...off the Charger since 8am

    Today Text and Whatsapp . a 30 min phone call ... been off charger for like 1hr 30 min and still have 95% left ...with estimated 15hr (but that'll go up as I just ended my phone call)
    11-16-2012 09:00 AM
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