Restoring from backup causes "a bunch of radio/processor overhead"???

Discussion in 'iPhone' started by asleep, Mar 26, 2016.

  1. asleep macrumors 68040


    Sep 26, 2007
    That's a quote from the below iMore iPhone SE review that MR posted, at the 2:50 minute mark...

    Can someone explain this to me... like I'm a 4th grader? [​IMG]

    I get the impression we should not be restoring our iPhones from backup, no?
  2. TechGod macrumors 68040


    Feb 25, 2014
    New Zealand
    That quite simply does not make any sense. I don't know why iMore is talking about.
  3. AlecEdworthy macrumors 6502


    May 1, 2007
    Leicestershire, UK
    The written article says the same too and the comment there is made in reference to battery life measuring in the first few days. I interpret it as when you restore from iCloud backup you cause your device to download a large amount of information (hence the radio overhead) and process that information (which is quite probably compressed to some degree) causing significant CPU utilisation (hence the processor overhead) in excess of what you would consider normal. If you restore from iTunes backup the impact would be less because there won't be the downloading and while the data is being copied on the phone will also (in all likelihood) also be charging so the battery won't be taking a hit. However for a period of time after the restore appears to have completed it may also be the case that the phone will continue to have a greater CPU activity level as it re-indexes the data for Spotlight searching etc. All of this will make determining battery life much harder in the first few days.

    Just my two pence worth.

  4. asleep thread starter macrumors 68040


    Sep 26, 2007
    Received an answer...


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