iPhone X Background app refresh

Discussion in 'iPhone' started by Endlessgo, May 18, 2018.

  1. Endlessgo macrumors newbie

    Sep 3, 2017
    just wondering. Do you guys turn it off or do you keep it on? What are the differences battery wise? Do you get much more battery life when turning it off?
  2. Banglazed macrumors 68020


    Apr 17, 2017
    Cupertino, CA
    It saves some battery if you have it off but the app will manually refreshes when launched instead.
  3. Endlessgo thread starter macrumors newbie

    Sep 3, 2017
    What do you mean with "some battery"? 2-3 percent?
  4. Mrbobb macrumors 601

    Aug 27, 2012
    I don't worry about battery. I turn background on (i.e. WAZE) when I need them, and stuff that I don't need instant refresh (iCloud refresh) I wait until I get to somewhere with WIFI, is is always present in just about any building, honestly the only place I need cellular is between buildings, traveling from point A to point B.
  5. Banglazed, May 19, 2018
    Last edited: May 19, 2018

    Banglazed macrumors 68020


    Apr 17, 2017
    Cupertino, CA
    Usage will always varies by each individual because everyone needs is different. It’s better if you test it by having it off and having it on a usual day to see how much a difference it is. Some, it may or may not make that much difference depending on the amount of apps and which app heavily depends on background refresh. I keep mines off.

    Don’t worry too much about battery if you want to be sane. Use it, turn off functions which don’t apply to yourself, and keep battery charge between 10-85 to minimize stress on battery draining too low or constantly charging full, or anything causing device to become warm too often.
  6. cynics macrumors G4

    Jan 8, 2012
    Background app refresh is a background execution mode known as 'fetch'. The app is not running in the background all the time, iOS will need to wake it up for this mode, they cannot wake themselves up. iOS has a slew of criteria for determining when and how often to launch an app in the background.

    The impact on battery is typically minimal due to the criteria iOS uses to launch an app in the background.

    Firstly, an app has 30 seconds to refresh its data before iOS suspends the app. Secondly, the more time, battery and data the app uses (or if its suspended from not completing or from not telling iOS its complete) the less iOS will allow that app to refresh in the background. And third iOS uses predictive usage, so if you check a social media app every day around 8, it might refresh it at 7:50.

    Clearly there is an impact in battery life however it SHOULD be minimal. There are exceptions though, however they are generally obvious. Background fetch can be used to initiate other APIs for downloading a large file through system built into iOS. Again though, if you are syncing all your photos to dropbox you shouldn't be surprised power and data were consumed.

    Background app refreshes 'fetch' mode is one of nine background execution modes and is one of the least power hungry modes.

    Like mentioned try turning it on for a few days/weeks and then turn it off for a few days/weeks and decide for yourself.
  7. RvXtm macrumors member


    Jul 11, 2011
    Timisoara, Romania
    Thanks for the detailed description on how this works.
  8. Zachary389, Nov 29, 2018
    Last edited: Nov 29, 2018

    Zachary389 macrumors newbie

    Nov 20, 2018
    some apps still manage to consumer a ton of power and resources. Yes, looking at Facebook so hard... Luckily, if either your battery life or your data limit is a concern, you can turn off background refresh all together MyPremierCreditCard
  9. Alex.jr macrumors member

    Nov 14, 2018
    WhatsApp for me with background app refresh on is a battery killer.

    There’s a huge impact here.
  10. George Knighton macrumors 65816

    George Knighton

    Oct 13, 2010
    Facebook is the only application that I will bother removing from memory.

    It does not behave itself.
  11. LoveToMacRumors macrumors 68020


    Feb 15, 2015
    Everything off
  12. C DM macrumors Sandy Bridge

    Oct 17, 2011
    All together, as in how? Background app refresh is just one aspect of an app being able to run in the background, there are plenty of others that have been around since before that was introduced and are not controllable by the end user.

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