Some Touch ID speed tests and my thoughts

Discussion in 'iPhone' started by airlied, Oct 9, 2014.

  1. airlied, Oct 9, 2014
    Last edited: Oct 9, 2014

    airlied macrumors 6502


    Jul 8, 2011
    Here are two youtube videos:

    The first one is a comparison between iPhone 6 and iPhone 5s on iOS 8, its clearly the iPhone 6 is faster than iPhone 5 on unlocking speed. however the second video show that the touch id on iPhone 5 is super duper fast (under iOS 7.1.1, according to the video), you can barely see the unlock screen (please don't pay attention on that samsung next to it).

    Then I borrowed a iPhone 5s from one of my friends and registered my fingerprints. I did some speed test on iOS 7 then repeated the test after upgraded the phone to iOS 8 and I noticed that there is a significant speed drop. It seems that unlocking touch ID on iOS 8 is much slower on an iPhone 5S.

    However, the unlocking speed of the iPhone 5s on iOS 8 is STILL slightly FASTER than my iPhone 6. I thought it's either a bug of iOS firmware or a hardware problem.

    But soon I noticed that on my iPhone 6, I have "handoff" on. Then I turned it off and gave it another try then the speed on my iPhone 6 is exactly same with my friend's iPhone 5s.

    So I got this conclusion: iOS8 slows down the unlocking speed, don't know if this is a bug or an intended security concern here; Having handoff on slows down the speed a little bit further and I guess is because the CPU need more power to deal with datas from another iOS/Mac devices when the screen wakes up and this process slows down the unlocking speed; Touch ID censors on two iPhone generations has no difference on unlocking speed.

    And sorry for my lousy English here.
  2. VSMacOne macrumors 601


    Oct 18, 2008
    Turned off Handoff and I can't see any real difference in unlocking speed. Also reports are suggesting that iOS 8.1 beta has Touch ID improvements.

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