Battery drain from mail app. Did you know?

Discussion in 'iOS 8' started by wakinghour, Jan 27, 2015.

  1. wakinghour, Jan 27, 2015
    Last edited: Jan 27, 2015

    wakinghour macrumors regular

    Joined:
    Jul 16, 2012
    #1
    Now that apple shows battery usage by app, we can finally pinpoint what is causing battery drain and not just base it on a guess.

    I noticed that my iPad Air 2 on iOS 8.1.2 was draining faster than I would expect for an iPad. It's so subtle that it would take a lot of testing to confirm it in the past but now that we have real data we know.

    Problem:
    It turns out that, in fact, 63% of my battery was being used by the mail app background activity for weeks. My settings were:

    Mail > Data Update > Push ON
    iCloud (mail sync is off) Push ON
    5 mail accounts MANUAL

    Solution:
    I turned off push and the problem went away.

    Questions:
    Why would push affect mail, when all my mail were pop 3 accounts that had been set to manual and don't even support push?

    What does Push ON mean exactly, when every email/icloud account has it's own separate option? What overrides what? I never found this clear since the first iPod Touch.

    Hope this helps anyone who might not even realize they have the problem.
     
  2. Ultra AleM macrumors 6502a

    Ultra AleM

    Joined:
    Jun 22, 2012
    Location:
    Italy
    #2
    To fix this problem, you could also try to delete and insert again the accounts. Push should not be responsible for battery drain.
     
  3. jahall05 macrumors regular

    Joined:
    Jul 30, 2013
    #3
    I have 2 emails set up. One Outlook account and my school email (it is another Outlook account...365).

    I have push turned on. I checked my usage and it shows mail only using 1% of battery.

    Interesting that yours is using so much. I wonder what the difference is.
     
  4. I7guy macrumors G5

    Joined:
    Nov 30, 2013
    Location:
    What Exit?/Saguaro Country
    #4
    I have push enabled and the mail app was taking about 5%. Wonder what was causing the spike.
     
  5. iamMacPerson macrumors 68030

    iamMacPerson

    Joined:
    Jun 12, 2011
    Location:
    AZ/10.0.1.1
    #5
    6 Plus and Air 2 here. I have 8 accounts (1 iCloud, 1 Outlook, 6 Gmails). The iCloud and Outlook are set to Push, the Gmail accounts are on Fetch Every 15 Minutes on both devices. Mail on my iPhone accounted for 3% of my battery usage, while Mail on my iPad accounted for 5%.

    Weird that yours ran away like that. I recommend deleting your accounts and setting them back up.
     
  6. Jeff R macrumors 6502

    Jeff R

    Joined:
    Jan 28, 2014
    #6
    I have 2 iCloud emails set up and push on. No effect on battery.
    Maybe it's because I don't get too much email.

    I keep my Gmail & especially Yahoo away from all my devices. Too much spam.

    I don't even check my Hotmail anymore lol!

    Slowly migrating all my emails & contacts to iCloud. I've had Yahoo since the 80's but their email just doesn't cut it in todays standards.

    Out with the old & in with the new.
     
  7. wakinghour thread starter macrumors regular

    Joined:
    Jul 16, 2012
    #7
    I agree with iamMacPerson and UltraAleM. This is definitely a bug and probably not a Push related issue.

    I do recommend you guys check if email is hogging your battery though as I didn't realize it for a while.
     
  8. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #8
    Agree, my work phone has Outlook configured for push and it gets great battery life. Fetch, on the other hand...:(...I keep turned off.
     

Share This Page