09-15-2014 09:33 AM
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  1. Michael Vanderheyden's Avatar
    Hi,

    I update two days ago to the latest developer preview (8.10.12397.895), since then the battery of my Lumia 925 goes from full to empty within 2h. The phone is also very hot the whole time which induces high CPU usage

    I already tried soft and hard reset without success, problem remains.

    It doesn't seem to be network related since there is almost no difference in airplane mode. I'm also trying to rule out background apps but in the meantime, does anyone else have the same problem or any idea how to solve it?

    BR

    Michal
    06-14-2014 02:51 AM
  2. Pashwa97's Avatar
    Hi,

    I update two days ago to the latest developer preview (8.10.12397.895), since then the battery of my Lumia 925 goes from full to empty within 2h. The phone is also very hot the whole time which induces high CPU usage

    I already tried soft and hard reset without success, problem remains.

    It doesn't seem to be network related since there is almost no difference in airplane mode. I'm also trying to rule out background apps but in the meantime, does anyone else have the same problem or any idea how to solve it?

    BR

    Michal
    Same problem in Lumia 520
    06-14-2014 02:58 AM
  3. emperor_skull's Avatar
    Mine lasted more after the latest update to pvd 8.1, just switch off battery saver
    06-14-2014 03:01 AM
  4. N1520's Avatar
    -Turn off background Tasks you don't need ( be reminded Notifications won't work if you do so )
    -Delete Skype. ( Don't disable it, f**** delete it )
    -make sure your brightness on AUTO, or even better at low
    -Location services OFF
    -Email account syncing to manual or hourly for accounts that don't require immediate attention. Same goes for calendars.
    -Go to your MS account, make sure no services have access to your account, such as twitter or Google.
    -Battery saver.

    That should do it

    I have 2 windows phones: 8X and 1520 .. Disconnected from charger at 7 AM, and at 6 PM : 8X at 54%, 1520 at 75% .. Moderate use.
    vijay aditya likes this.
    06-14-2014 03:02 AM
  5. Michael Vanderheyden's Avatar
    -Turn off background Tasks you don't need ( be reminded Notifications won't work if you do so )
    -Delete Skype. ( Don't disable it, f**** delete it )
    -make sure your brightness on AUTO, or even better at low
    -Location services OFF
    -Email account syncing to manual or hourly for accounts that don't require immediate attention. Same goes for calendars.
    -Go to your MS account, make sure no services have access to your account, such as twitter or Google.
    -Battery saver.

    That should do it

    I have 2 windows phones: 8X and 1520 .. Disconnected from charger at 7 AM, and at 6 PM : 8X at 54%, 1520 at 75% .. Moderate use.
    tried all that, didn't help...
    As mentioned it drains as much even on airplane mode so push/network activity cannot be the cause
    06-14-2014 04:53 AM
  6. N1520's Avatar
    tried all that, didn't help...
    As mentioned it drains as much even on airplane mode so push/network activity cannot be the cause
    Soft reset, and if all fails hard reset.

    And that's not a sure thing. Wait for Nokia official update.
    06-14-2014 07:15 AM
  7. Cyterio's Avatar
    If you haven't already tried, perform a hard reset and don't restore any apps or data. If you are still experiencing issues on a completely fresh OS, then I would think you have a hardware issue.
    If your phone is working properly then I would reinstall your apps one at a time and monitor your battery life.
    You might also want to check your accounts and make sure you are not encountering any sync errors or hang-ups. I'm sure you can rule that out though, since you've already tried running in airplane mode.
    06-14-2014 08:00 AM
  8. msirapian's Avatar
    You can try to recalibrate the battery. Let it drain to 0% (so that it shudowns) then charge it without interruption to 100%, and cycle this 3 times.
    06-14-2014 08:14 AM
  9. Michael Vanderheyden's Avatar
    You can try to recalibrate the battery. Let it drain to 0% (so that it shudowns) then charge it without interruption to 100%, and cycle this 3 times.
    Already tried both soft and hard reset... Didn't help.
    Same with battery drain to 0%
    The only thing I didn't try is not to restore the phone. Will be the next test
    06-14-2014 08:47 AM
  10. crgsibaja's Avatar
    I'm honest this is BETA.. So please don't forget this.. I got the 1520 with the last update and don't have any issue. Can you make a hard reset and monitoring if there's one app that drain your battery.. Maybe the update can't be installed successfully
    06-14-2014 10:12 AM
  11. greenspot's Avatar
    -
    -Battery saver.

    What does this mean? Disable it or activating it?

    .
    06-14-2014 10:38 AM
  12. Michael Vanderheyden's Avatar
    Guys, I appreciate the feedback an without any disrespect meant but:
    1) I know very well this is a beta and I never complained about the fact that I have a problem or said it was unacceptable or ...
    2) The whole purpose of a beta is to test it a gather feedback to solve potential issues (trust me as software engineer, I know it), and that's exactly what I'm doing. Trying to find a solution to a problem I'm having.
    3) Please read the thread before posting some ready made solution you got from elsewhere. Before posting here, I searched for potential solution and explained in my first post what I already tried. I posted twice that I already tried soft and hard reset and still people are still posting to try that. What's the point, improving your forum stats?

    Now to answer the question, there is no particular app draining the battery. Even after a fresh boot without even unlocking the screen once (no app allowed to run in the BG) I still have the same problem.

    My guess is that something went wrong with the update and I should try to reinstall it. I will try the following and keep you posted... How to Remove the Windows Phone 8.1 Developer Preview on Nokia Devices | TheUnlockr
    mary beth hale and paulinoz like this.
    06-14-2014 01:17 PM
  13. egold70's Avatar
    You may try and downgrade to WP8 using Nokia software recovery tool, latest version, 1.4.1 will allow that
    If everything works fine on 8 reinstall WP8.1 and see if the problem recurs
    If you are experiencing the same behavior on WP8 than it is most probably hardware issue
    06-14-2014 02:09 PM
  14. shaggydave's Avatar
    Check your emails and see if they continue to try to sync! I had the same prob on same phone ! Delete your emails and hard reset and then add emails back! Fixed! 😊
    06-14-2014 02:26 PM
  15. Ericcai's Avatar
    Not so bad
    06-14-2014 09:44 PM
  16. shielah's Avatar
    Mine had been bad to, 5% in 20 min only s few text and read a couple pages on here and book.. Drains in idle all background off except battery performance app, email was set on 2 hrs just changed it to manual.
    What would Skype being deleted benefit if its not running??
    Mine isn't getting hot though, just drains way to fast.. And shouldn't when idle.. I'm sleeping for goodness' and my phones dying in the mean time...920 here
    06-14-2014 11:05 PM
  17. myst02's Avatar
    Hi,
    I also had this problem on my Ativ S, but I found a solution.

    1) Let your phone discharge to 50%-30% battery
    2) Download Battery Discharger: Battery Discharger | Windows Phone Apps+Games Store (United States)
    3) Do a soft reset by pressing Vol Up + Power
    4) Run Battery Discharger and let it discharge your phone's battery until it turns off
    5) Wait 10 minutes and connect your phone to charger
    6) If the phone is booted, do a soft reset again
    7) Charge your phone to 100% battery. Don't disconnect it when it has 100% and wait 2 hours before disconnecting.

    This solution worked perfectly for me! :)
    Another tip: Turn off battery saver, it will dry out your battery, because of a WP 8.1 bug.

    BR,
    myst02
    M L likes this.
    06-15-2014 05:32 AM
  18. Huime's Avatar
    you need to reinstall, either OS or driver messed up.
    06-15-2014 06:06 AM
  19. myst02's Avatar
    No, it works with the solution above.
    On my Ativ S, I had 30% battery drain per hour. After doing this, I have 1% per hour :) :) :)
    06-15-2014 06:14 AM
  20. Branta's Avatar
    You can try to recalibrate the battery. Let it drain to 0% (so that it shudowns) then charge it without interruption to 100%, and cycle this 3 times.
    This is NOT a battery calibration issue.

    The OP's report that the phone gets hot indicates an abnormally high processor load, or a hardware defect. Either could be capable of draining the battery in a few hours. Considering this is immediately after software changes I would look for corrupted or buggy software as the prime suspect, because a hardware issue is unlikely to be triggered by a software update. Full restore to factory software then reload all the bells and whistles one at a time.
    06-15-2014 11:50 AM
  21. OHardy's Avatar
    Hi,

    I update two days ago to the latest developer preview (8.10.12397.895), since then the battery of my Lumia 925 goes from full to empty within 2h. The phone is also very hot the whole time which induces high CPU usage

    I already tried soft and hard reset without success, problem remains.

    It doesn't seem to be network related since there is almost no difference in airplane mode. I'm also trying to rule out background apps but in the meantime, does anyone else have the same problem or any idea how to solve it?

    BR

    Michal
    My NL925 is running flawlessly after the first WP8.1 DP Update to preset.
    06-15-2014 11:57 AM
  22. balltounge's Avatar
    Hi,

    I update two days ago to the latest developer preview (8.10.12397.895), since then the battery of my Lumia 925 goes from full to empty within 2h. The phone is also very hot the whole time which induces high CPU usage

    I already tried soft and hard reset without success, problem remains.

    It doesn't seem to be network related since there is almost no difference in airplane mode. I'm also trying to rule out background apps but in the meantime, does anyone else have the same problem or any idea how to solve it?

    BR

    Michal
    Bought a lumia 925 2 days ago, get it updated to (8.10.12397.895) and had a same problem as yours. what i did was hard reset,flash downgrade back to wp8.0 using Nokia care suite, and updated again to version (8.10.12382.878) and it seems better than newer (8.10.12397.895)
    06-15-2014 01:07 PM
  23. Tonchi91's Avatar
    I notice that battery on my L920 which is 2 months old last for about 15 hours with the latest update. I am only using facebook, nextgen reader, messaging apps and twice a day youtube. I don't believe that is normal.
    06-15-2014 01:13 PM
  24. Paul May's Avatar
    Guys, I appreciate the feedback an without any disrespect meant but:
    1) I know very well this is a beta and I never complained about the fact that I have a problem or said it was unacceptable or ...
    2) The whole purpose of a beta is to test it a gather feedback to solve potential issues (trust me as software engineer, I know it), and that's exactly what I'm doing. Trying to find a solution to a problem I'm having.
    3) Please read the thread before posting some ready made solution you got from elsewhere. Before posting here, I searched for potential solution and explained in my first post what I already tried. I posted twice that I already tried soft and hard reset and still people are still posting to try that. What's the point, improving your forum stats?

    Now to answer the question, there is no particular app draining the battery. Even after a fresh boot without even unlocking the screen once (no app allowed to run in the BG) I still have the same problem.

    My guess is that something went wrong with the update and I should try to reinstall it. I will try the following and keep you posted... How to Remove the Windows Phone 8.1 Developer Preview on Nokia Devices | TheUnlockr
    People keep saying that the WP 8.1 Developer Preview is in Beta and this is not true. The latest version of 8.1 is the official release. The only thing missing on the Nokia Phones is the firmware. And the only thing Beta is Cortana which is being updated on the backend not through the OS updates.

    I hope you can figure this out. I just had to hard reset my wife's 1520 because it kept locking up and was draining and getting hot. A hard reset and not using the back up has fixed it. Restoring the backup tends to just restore the problems in my experience.
    06-15-2014 11:59 PM
  25. Zulfigar's Avatar
    People keep saying that the WP 8.1 Developer Preview is in Beta and this is not true. The latest version of 8.1 is the official release. The only thing missing on the Nokia Phones is the firmware. And the only thing Beta is Cortana which is being updated on the backend not through the OS updates.

    I hope you can figure this out. I just had to hard reset my wife's 1520 because it kept locking up and was draining and getting hot. A hard reset and not using the back up has fixed it. Restoring the backup tends to just restore the problems in my experience.
    So it might have been an app misbehaving? If that's the case, tell her to redownload her apps slowly and figure out which one it might be, then send a message to that developer. ;)
    06-16-2014 12:11 AM
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