1. rstar66's Avatar
    Hey all,
    This is all on my Lumia 925 running 8.1 Cyan. (not developers preview but the actual shizz)

    Just Wondering if seeing a 8% average battery discharge is normal, when the phone is not being used.
    I charge my new lumia 925 at night, (it used to charge slowly but that fixed and it charges in 2hours now),

    The max battery life i have got so far is about 13 hours on an average day. WTH

    importantly, Whatsapp seems to take the biggest toll. Texting for twenty minutes wipes off about 20%!!!!!!. it also gets realy realy hot when i try to upload pictures to whatsapp conversations and download from pictures that have been sent to me.

    This is also all on 2G!

    Ive tried everything obvious. Low brightness, battery saver OFF (I saw this somewhere), No glance, No WIFI/NFC/LOCATION, No double tap to wake up, wifi-sense off, Bluetooth off,

    Basically every ding dong diggety smartphone capability, JUST TO SAVE BATTERY!!..

    Please tell me this is not normal. :(
    07-24-2014 12:15 PM
  2. Thomas Schindler's Avatar
    Got the same problem after updating... hot phone, some apps seem to drain my battery as hell (especially Kakao Talk, which drains like 1% every minute its open, even just in the background), but also Facebook and Whatsapp as well.
    I think its a problem of the apps, not "8.1 ready" or something like this...
    07-24-2014 02:15 PM
  3. Rodrigo Mendes's Avatar
    Of course it's not normal. Do you experienced anything like that before Cyan? In idle, even with 3G or 4G on, the normal is drain about 2~4% at maximum. With a little usage, maybe 5%.

    Maybe it's a 8.1 thing, we don't know yet.
    07-24-2014 04:45 PM
  4. Chris_Germany's Avatar
    Same here. With 8.0 i left my phone and i lost maybe 5% over night. Now its like 15-20, in 8 hours doing nothing (good signal!).
    07-24-2014 04:48 PM
  5. emperor_skull's Avatar
    The same here
    07-24-2014 04:49 PM
  6. Amandona's Avatar
    I've had the same problem ever since i upgraded to 8.1. Any ideas how to downgrade?
    07-24-2014 04:54 PM
  7. emperor_skull's Avatar
    I've had the same problem ever since i upgraded to 8.1. Any ideas how to downgrade?
    Use the Nokia recovery tool
    07-24-2014 05:43 PM
  8. RumoredNow's Avatar
    No one here mentioned that they tried a Hard Reset... Don't forget to run your backups first.



    8.1 is a major change in OS, not just an incremental upgrade and it deserves a "clean install" to run smoothly.
    07-24-2014 07:33 PM
  9. vitor.rf's Avatar
    That's an issue with low internet speed and WP.

    It seems the phone keeps active longer downloading/uploading stuff when the internet connection is slow.
    Better leaving it on 3/4G. Why are you on 2G anyway?
    07-24-2014 09:30 PM
  10. rstar66's Avatar
    Of course it's not normal. Do you experienced anything like that before Cyan? In idle, even with 3G or 4G on, the normal is drain about 2~4% at maximum. With a little usage, maybe 5%.

    Maybe it's a 8.1 thing, we don't know yet.
    I didn't really have much time with 8.0 since I bought the phone just earlier this month..

    Glad to know I'm not the only one!
    But still..
    I was expecting a 2-4% per hour drain.. ALL the battery apps I've downloaded and checked with show a max 12-24 hour battery..
    And yes..warm.. Very very warm..
    Ill try uninstalling WhatsApp over t gr e weekend to see if its the culprit.
    Ill keep yall posted.
    07-25-2014 02:38 AM
  11. johnskrilla's Avatar
    Im on At&t and my connection is set to LTE...How can I change it to 3g...?
    Sent from Seattle using Tapatalk
    07-25-2014 02:52 AM
  12. CharlieBoy1894's Avatar
    Settings->Cellular+SIM->SIM Setting->Highest Connection Speed->3G
    07-25-2014 04:46 AM
  13. johnskrilla's Avatar
    Settings->Cellular+SIM->SIM Setting->Highest Connection Speed->3G

    will I still get 3g speed if im on WiFi and my ISP speed is 30mbps?
    07-25-2014 04:56 AM
  14. rstar66's Avatar
    will I still get 3g speed if im on WiFi and my ISP speed is 30mbps?
    Your wifi doesnt have anything to do with changing from LTE to 3G or vice versa. You'll get normal wifi speed depending on what sort of connection/deal you have with your ISP.
    07-25-2014 07:02 AM
  15. johnskrilla's Avatar
    Ok got cha.
    Sent from Seattle using Tapatalk
    07-25-2014 08:17 AM
  16. Asskickulater's Avatar
    That's huge.. my 925 drains at maybe 2% per hour with my glance screen always on max brightness and lte/bluetooth/wifi/ always on

    My first recommendation is to reset the phone to factory settings

    Second, apps like whatsapp and stuff, set them to always on and enable toast messages, that way you can send your message, hit the start button (tumbstoning it) and then relaunch it when you receive a message (all apps are battery whores, using it this way is a lot more battery effecient) also in my experience.. running on 2g doesn't actually improve battery life.. it seems to do worse than 3g on battery life, though 4g/lte is easily worse than 3g. so if your trying to save battery, I'd recommend 3g
    vitor.rf likes this.
    07-25-2014 05:31 PM
  17. rstar66's Avatar
    That's huge.. my 925 drains at maybe 2% per hour with my glance screen always on max brightness and lte/bluetooth/wifi/ always on

    My first recommendation is to reset the phone to factory settings


    Second, apps like whatsapp and stuff, set them to always on and enable toast messages, that way you can send your message, hit the start button (tumbstoning it) and then relaunch it when you receive a message (all apps are battery whores, using it this way is a lot more battery effecient) also in my experience.. running on 2g doesn't actually improve battery life.. it seems to do worse than 3g on battery life, though 4g/lte is easily worse than 3g. so if your trying to save battery, I'd recommend 3g



    Im using 3G now (well H+).. so its sort of still the same. Im waiting for this weekend to wipe the phone to factory settings.

    I wont lose anything like the 3 month Mixradio free downloads etc right?
    07-29-2014 05:41 AM
  18. CharlieBoy1894's Avatar
    Hey guys do you have the option to enable or disable background task for internet explorer? For some reason I don't have it.
    07-29-2014 09:24 AM
  19. Chris_Germany's Avatar
    Hey guys do you have the option to enable or disable background task for internet explorer? For some reason I don't have it.

    Yes
    07-31-2014 05:16 AM
  20. Gene Collins's Avatar
    Won't a hard reset just restore the phone back to 8.0? You'd then have to reupdate to 8.1. I fail to see how that is any more clean of an install than the original update.
    11-24-2014 12:27 PM
  21. guinnsquirrel's Avatar
    I too have a similar issue. Am running the latest DP build (8.10.14203.306). I too am suffering from high battery drain. I've factory reset the phone, re-installed everything and still have problems :(
    12-03-2014 07:33 AM
  22. Munter2's Avatar
    I too have a similar issue. Am running the latest DP build (8.10.14203.306). I too am suffering from high battery drain. I've factory reset the phone, re-installed everything and still have problems :(
    Uninstall any apps that you added. Put the phone in airplane mode, turn it off, then after a couple of minutes turn the phone back on and turn off airplane mode. If that doesn't solve the issue you need to send your phone in. If it does solve the issue, then start adding apps one at a time.
    12-03-2014 02:52 PM
  23. guinnsquirrel's Avatar
    Uninstall any apps that you added. Put the phone in airplane mode, turn it off, then after a couple of minutes turn the phone back on and turn off airplane mode. If that doesn't solve the issue you need to send your phone in. If it does solve the issue, then start adding apps one at a time.
    Thank you for your advice. I removed both CamCard and CamScanner. A few other apps (OneFootball and Sonic Dash) have been updated too.

    Battery life is now much improved. Hurrah!
    Last edited by guinnsquirrel; 12-10-2014 at 11:50 AM. Reason: Newly resolved.
    12-08-2014 06:03 AM

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