iOS 11.0.3 Horrible Battery drain 5% every 2 minutes

Discussion in 'iOS 11' started by iphonefreak450, Oct 15, 2017.

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  1. iphonefreak450 macrumors regular

    Dec 14, 2014
    Installed iOS 11.0.3 on my iPhone SE and ever since, I am getting horrible battery drain, especially watching YouTube (web version). I am getting about 5 to even 10 percent drainage every 3 to 5 minutes.
    The only other apps I used that I had installed are a scanner radio app and MyNoise app (background sleep sounds), that's about it. I even hardly run any apps under background refresh.

    Is this because that the iPhone SE is an older phone and the battery drainage tends to be greater under iOS 11 than like say the iPhone 7 or 8?

    It tends to get really rough on battery when playing YouTube videos (browser version).
    And yesterday, the phone got warm as well.

  2. C DM macrumors Sandy Bridge

    Oct 17, 2011
  3. macfacts macrumors 68040


    Oct 7, 2012
    The link C DM posted is a 21 page thread in the issue. You are not alone in experiencing bad battery.
  4. iphonefreak450 thread starter macrumors regular

    Dec 14, 2014
  5. Perene, Oct 15, 2017
    Last edited: Oct 15, 2017

    Perene macrumors 6502a


    Jun 29, 2015
    You need to calibrate your battery as explained here:

    Once the battery is down to 0 charge it right away up to 100%. This shouldn't be done again, though, since it's bad for the battery's health to be fully drained. NEVER LET YOUR BATTERY DRAIN COMPLETELY, ALWAYS RECHARGE BEFORE REACHING 0%.

    You'll only do this once to calibrate.

    Also try a hard reset:

    And follow these tips:

    P.S. A clean install is also recommended, as I explained here:
  6. Mercenary macrumors 65816


    Sep 17, 2012
    The "never drain to 0%" is a myth. You will not damage your battery as the phone never actually gets to zero. It actually has about 10% still left.

    True. You shouldn't let lithium ion battery to zero but you don't actually have access to the 'metal' so you won't be able to fully drain it.

    So feel free to charge it up and let it run down as much as you like
  7. maflynn Moderator


    Staff Member

    May 3, 2009
    [MOD NOTE]
    Please join the discussion that was linked earlier in the thread.
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