04-28-2015 11:25 PM
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  1. netstatinfo's Avatar
    Is anyone also experiencing a serious battery drain on their device after the install? I have my L1020 and my battery is not lasting at all, I had almost full battery once I stepped into my office and then by like 3:30PM EST my battery was dead, I optimized the battery to the way I had it prior to installing the dev preview, any thoughts?
    Rozdzan Waadd and little_boy like this.
    04-14-2014 05:27 PM
  2. jgbstetson's Avatar
    Yes, pull up your Batter Saver app and see what's chewing through it.
    04-14-2014 05:31 PM
  3. Curtieson's Avatar
    Is anyone also experiencing a serious battery drain on their device after the install? I have my L1020 and my battery is not lasting at all, I had almost full battery once I stepped into my office and then by like 3:30PM EST my battery was dead, I optimized the battery to the way I had it prior to installing the dev preview, any thoughts?
    Personally...I'd chalk it up to a One Day oddity. Assuming you've charged it up again already, I'd just see if you wake up and it is dead before doing anything drastic.
    MikeSo likes this.
    04-14-2014 05:32 PM
  4. crav4speed's Avatar
    Yeah, I noticed battery drain on my 1520 as well. Ironically, the first app showing the battery drain is the battery saver app itself!
    Lumiatic guy and Dadstar0410 like this.
    04-14-2014 05:32 PM
  5. MikeSo's Avatar
    Happened to me too on my Lumia 521. I chalk it up to a bunch of background tasks needed to be done after installation. It subsided after a few hours.
    04-14-2014 05:34 PM
  6. anon5658834's Avatar
    My battery is lasting ages on my 1520
    kyriacou48 and meddyrainzo like this.
    04-14-2014 05:41 PM
  7. Zapella Tiago's Avatar
    Yeah, I noticed battery drain on my 1520 as well. Ironically, the first app showing the battery drain is the battery saver app itself!
    Same here! Battery saver the top draining!
    04-14-2014 05:51 PM
  8. vipin_thegame's Avatar
    On checking the battery sense app, I see that its Cortana which is drinking so much battery juice. She is one hungry baby!
    Dadstar0410 and Curtieson like this.
    04-14-2014 05:53 PM
  9. Dadstar0410's Avatar
    On checking the battery sense app, I see that its Cortana which is drinking so much battery juice. She is one hungry baby!
    She a thirsty ho
    04-14-2014 05:59 PM
  10. ricbon's Avatar
    let the battery drain till its dead, then plug it in and charge it up without distrubing it. after that use the phone normally til its dead again, charge it up and see how it goes then. I know it sounds wierd but my battery life is good after these steps.
    Zapella Tiago and Curtieson like this.
    04-14-2014 06:20 PM
  11. sagara0510's Avatar
    i'm also having a huge battery drain problem with my Lumia 925 after install the 8.1 dev preview.

    the back of the phone above the camera lens is constantly hot and i lose about 1-2% of battery ever couple of minutes.

    i've turned off Cortana, turned off wifi & bluetooth and disabled some background tasks but nothing helped.

    I don't know what to do. The phone was working fine before the 8.1 dev preview. :(
    04-14-2014 08:46 PM
  12. mrweir's Avatar
    I am having this also. Since all the apps download again after the update, I needed to go in and block a lot of them from background tasks. I had to do the same thing after the last update. The battery life leveled out after a couple of days.
    04-14-2014 08:59 PM
  13. mary beth hale's Avatar
    On checking the battery sense app, I see that its Cortana which is drinking so much battery juice. She is one hungry baby!
    I am having the same experience w/cortana. Going to turn her off for a day and see if it makes a difference.
    04-14-2014 09:08 PM
  14. Ashalinia's Avatar
    Cortana is my second biggest battery drainer. Having to use the Facebook app more often is killing my battery.
    04-14-2014 09:11 PM
  15. sagara0510's Avatar
    so in the space of less than 6 hours, my phone has gone from a full charge to 9% battery.

    since i'm at work, i plugged in my phone to the micro usb connected to my PC to charge the battery.

    after about half an hour or so, I noticed that the battery is still at 9% which leads me to conclude that the phone is consuming as much power as I am charging it with!

    Immediately, I turned it onto Airplane Mode and it has started to increase its charge to about 11% now. This leads me to assume that one or more of Wifi, cellular, FM radio, Bluetooth and/or NFC sharing is affecting the battery drain as those are the things that airplane mode turns off.

    Will tinker with settings a bit more and report back if I get any improvements
    Curtieson likes this.
    04-14-2014 09:42 PM
  16. worldspy99's Avatar
    Play around with battery sense and turn off the multiple apps that are running in the background :)
    04-14-2014 09:46 PM
  17. Micfur's Avatar
    After the update my Lumia 925 is using 22% per hour. Before I would average 8%. And that 8% was using my Bluetooth headset for music streaming all day. I've been home all day using my phone minimally all day and its lasting a little over four hours on a full charge. I don't know what I'm going to do during work tomorrow if this keeps up.
    04-14-2014 09:48 PM
  18. TechAbstract's Avatar
    I am having this also. Since all the apps download again after the update, I needed to go in and block a lot of them from background tasks. I had to do the same thing after the last update. The battery life leveled out after a couple of days.
    Background task is still in settings?
    04-14-2014 09:51 PM
  19. gentry33's Avatar
    And then there's this tidbit I found from a local Freecycler

    "Lifeproof case for an iPhone 4S needs a new home. Gently used with plenty of life to go. Keeps phone working in freezing conditions, rain, sand, etc.

    My iPhone 4S is no longer working...and it is not possible to order a replacement (no matter how much I begged). :-( It seems the problem is not with the physical function of the phone, so much that it is not able to handle the newer iOs 7 software. Wah!"

    I'm not making this up, copied and pasted from my email.

    Count our blessings, the wonkiness of the batteries after updates tend to work themselves out.
    04-14-2014 09:52 PM
  20. rohit bhattacharjee's Avatar
    Hi huys, has there been any decrease/increase in battery performance after updating to wp8.1?? does cortana drain a lot of battery?? it would really suck if it did, coz I own a lumia 720, and the battery life is one of the most boastfull feature I have!! :P
    04-14-2014 10:11 PM
  21. worldspy99's Avatar
    Background task is still in settings?
    Tap settings >battery saver and then click usage. You will see the app icons, now tap each icon to see if it is running in the background and decide if you want it on or not. By default pretty much every app will be turned on. I turned off a majority of them and my battery drain stabilized right away :-)
    04-14-2014 10:12 PM
  22. husam2277's Avatar
    My 1520 battery went from full to 0 in just 5 hours. 2 hours using the phone and 3 hours just in standby and all signals turned off (WiFi, Bluetooth, 3G,NFC). the only signal is on is the location. My 1520 used to last 2 days for full charge and now just 5 hours!! Its getting very hot which indicates high battery drain.
    04-15-2014 02:28 AM
  23. worldspy99's Avatar
    My 1520 battery went from full to 0 in just 5 hours. 2 hours using the phone and 3 hours just in standby and all signals turned off (WiFi, Bluetooth, 3G,NFC). the only signal is on is the location. My 1520 used to last 2 days for full charge and now just 5 hours!! Its getting very hot which indicates high battery drain.
    Please turn off all the background tasks.
    04-15-2014 02:58 AM
  24. liam-ward's Avatar
    My 1520 is dropping quicker then usual but still lasting a while. On battery saver it says the people hub is using the most background battery but i can't stop it??
    04-15-2014 03:14 AM
  25. Arne Burghouts's Avatar
    Turning off Wifi Sence helped for me.. With wifi sence on, it constanly is looking for free hotspots.. its also the wifi attena that is running hot i think..
    TechAbstract and Xeeynamo like this.
    04-15-2014 03:34 AM
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