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  1. #76  

    Default Re: 4.2 battery life

    Go to settings, Wi-Fi, click the "three dots" menu button in the top-right, select advanced, click "keep Wi-Fi on during sleep", select the option you want.

    Sent from my Nexus 7 using Android Central Forums
  2. #77  

    Default Re: 4.2 battery life

    Try switching off Google Now. Doing that improved my battery life dramatically from 1 day to almost 3 days.

    Sent from my Nexus 7 using Android Central Forums
    Eduardo06sp likes this.
  3. #78  

    Default Re: 4.2 battery life

    Quote Originally Posted by sandeep_s View Post
    Try switching off Google Now. Doing that improved my battery life dramatically from 1 day to almost 3 days.

    Sent from my Nexus 7 using Android Central Forums
    This is why I dislike Google Now. It's really cool, but at the cost of most of my battery life.

    Sent from my Nexus 7 using Android Central Forums
  4. #79  

    Angry Re: 4.2 battery life

    I've uninstalled Weather Channel, Google Currents, HD Widgets Disabled 90% of my Play Store Apps from auto-updating, manually shut off wi-fi all the time, disabled location access and NFC, disabled Google Now and some other things I can't even remember.

    All this just to try to squeeze 4-5 hours of battery life out of what has become a POC since the 4.2 upgrade. I used to easily get 8-10 hours of battery life with all those other things listed installed or running. So, now I have to not use features and apps that I enjoyed and found useful.

    Google better man up soon and issue a fix for this boondoogle. This ignoring of the problem coupled with how they did the same thing with the shipping fiasco when the tablet was released seals the deal for me that their customer attitude is horrid.

    What's the sense of having a recognized best in class machine that is crippled by the manufacturer via their doggy update?

    I doubt I'll ever be buying hardware from Google again.
  5. #80  

    Default Re: 4.2 battery life

    I am contemplating going back to 4.1.2 myself. Battery life is the least of my concerns anymore

    Sent from my HTC PH39100 using Tapatalk 2
  6. #81  

    Default Re: 4.2 battery life

    I just did a little research on my tablet. In the settings I changed "Keep WIFI on During Sleep" to "only when plugged" from the beginning but battery lasts for a day with only moderate use. Then I tried Battery Mix widget mentioned here. It showed that WiFi is kept on while tablet is in sleep even though it should be off during sleep. I'm not sure what keeps it on.

    Sent from my Nexus 7 using Android Central Forums
    Eduardo06sp likes this.
  7. #82  

    Default Re: 4.2 battery life

    Anybody else getting this from BBS? I researched it and have no real clue.



    Sent from my Nexus 7 using Android Central Forums
    Attached Thumbnails Attached Thumbnails 4.2 battery life-uploadfromtaptalk1355052127267.jpg  
  8. #83  

    Default Re: 4.2 battery life

    Quote Originally Posted by robertnv View Post
    Anybody else getting this from BBS? I researched it and have no real clue.



    Sent from my Nexus 7 using Android Central Forums
    I took a look at my battery statistics when I caught a glimpse of 'surface flinger', then it turned to something else.

    Sent from my Nexus 7 using Android Central Forums
    Thanked by:
  9. #84  

    Default Re: 4.2 battery life

    Hello People!

    I have good news for you! I had similar problems after 4.2 but found a fix. I am sure it will work for many of you. This is what I did (diagnostics and solution):

    1. Unchecked "Data Enabled" at "Settings > More > Mobile Networks". After doing this the drain stopped, so it was clear it had something to do with an app connecting to internet.

    2. Most mobile data was consumed by K-9 Mail (should be applicable to other clients too) so I decided to try it first. I restricted its "Background Data" via "Settings > Data Usage > K-9 Mail. Then I checked "Data Enabled" back and there was no battery drain. It was obvious that restricting Background Data helped.

    3. I deleted all K-9 Mail accounts, cleared the app data and added accounts back. And Voila!, no more battery drain!

    Hope this helps you guys,

    With all best wishes,

    Tigran Shahnazaryan
  10. #85  

    Default Re: 4.2 battery life

    That sucks, mine has been running flawlessly.
    Rooted and flashed: HTC EVO 4, Motorola Photon 4, Motorola Razr Maxx, and Nexus 7
    robertnv likes this.
  11. #86  
    xyzlene's Avatar

    Posts
    102 Posts
    Global Posts
    104 Global Posts

    Default Re: 4.2 battery life

    Battery life performance slashed in half since 4.1.2 --- kind of frustrating that this is
    a pure Google experience, and its almost like we received an update from Verizon for a skinned android device. Frustrating indeed. people over at xda are rolling back. It is a pain in the neck, but charging everyday is not a good look,,,,,, What the heck is going on here????
  12. #87  

    Default Re: 4.2 battery life

    I'm getting good battery life on 4.2 and that includes 4hrs of screen time.

    Sent from my Nexus 7 using Tapatalk 2
    Attached Thumbnails Attached Thumbnails 4.2 battery life-uploadfromtaptalk1355988365276.jpg  
    Galaxy S4 ATT (Retired)

    Galaxy S3 VZW (Retired)

    Xoom LTE VZW (Retired)

    Nexus 7 2012 (Retired)

    Nexus 7 2013 (Retired)

    Samsung Galaxy Tab S 8.4

    Note 10.1 2014 Ed.

    Galaxy S5 ATT
  13. #88  

    Default Re: 4.2 battery life

    disable all location services, that helped a lot with my nexus 7
  14. #89  

    Default Re: 4.2 battery life

    This is almost off-topic, but I have a 4.2 battery usage question (I've only had mine for a few weeks): Thus far I have only a seat-of-the-pants feel about battery usage but have been pleased with it. I normally leave the GPS and NFS turned off.

    Yesterday I was watching a movie using MX Player and paused it and went to another app. I put the 7 down and closed the case (which turned off the screen). Normally when I leave it idle with the display off for a couple of hours I notice very little. But this time, when I turned it on, the battery had gone from maybe 70-something to 24%.

    I didn't think to check the battery usage indicator, but I'm wondering if MX Player is sucking up the battery even when paused and the display is off. I'd appreciate any thoughts on this.
  15. #90  
    Android_Lee's Avatar
    Android Addict

    Posts
    711 Posts
    ROM
    Stock rooted 4.1.2 JB

    Default Re: 4.2 battery life

    I'm getting pretty good battery life on 4.2. And this was almost 13 hours of screen time, most was from Global Outbreak and Galaxy On Fire 2.

    @Android_Lee
    Galaxy Note III
    KitKat 4.4 Stock
    Nexus 5
    KitKat 4.4 Stock
    Nexus 7
    KitKat 4.4 Stock Rooted
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