iPhone 7(+) Geekbench score is lower than average with good battery health

Discussion in 'iPhone' started by R740, Jan 3, 2018.

  1. R740 macrumors member

    Joined:
    Mar 15, 2015
    #1
    Hello all,
    The past couple of days the topic of Apple's power management system because of the battery wear in iPhones has been skyrocketing. I have experienced slightly reduced speed of my iPhone 7 since the cold season began.
    I connected my iPhone to coconutBattery and it showed a relatively great health for a one year old phone - 88%. Then I ran Geekbench 4 on my iPhone and the results were lower than an average iPhone 7. Single-Core score was 2633, compared to 3295 iPhone 7 average and the Multi-Core score was 4314 compared to 5387 average.
    As far as I understand, even without a significant battery wear level, the performance of my iPhone is still degraded. Any suggestions?
    Thank you.
     
  2. rui no onna macrumors 603

    rui no onna

    Joined:
    Oct 25, 2013
    #2
    Does the slowdown have significant impact on you or is performance still pretty acceptable? If it's still acceptable, I'd suggest just waiting until December or so and do a $29 battery swap then.
     
  3. Applejuiced macrumors Westmere

    Applejuiced

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    #3
    Yes, sadly that's what many others experience with the latest iOS 11 update on the i7. And Apple admitted they started "optimizing" the i7 with this new improvement.
    You're slowed down even though your battery is well above the good health percentage.
    Hope Apple addresses this with the next iOS update to allow the user to disable this "feature".
     
  4. Mlrollin91 macrumors G5

    Mlrollin91

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    #4
    88% health remaining is significant wear. Batteries becomes unstable and begin to fail at 80%. Thus, you have consumed 60% of your batteries usable life.
     
  5. Applejuiced macrumors Westmere

    Applejuiced

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    #5
    Really? at 88% he used up 60% of the battery life within a year?
    I wouldnt think 88% battery health is that bad at all.
    And nothing to need a slow down on the CPU speed.
     
  6. Mlrollin91 macrumors G5

    Mlrollin91

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    #6
    Well think about it. Batteries fail at 80%. That’s when their consumable life is used up. So 88% is only 40% remaining. Once a battery drops below 90% health, you can begin to feel the impacts of a failing battery. My Air 2 is now at 86% and I can definitely tell that my charges are not what they once were. I’ve also experienced some issues with my battery saying it’s at 50% charge remaining and dropping to 30% in the blink of an eye, to jump back to 49%.

    This is probably why Apple will not require the battery to be at 80% or less to be changed.
     
  7. Applejuiced macrumors Westmere

    Applejuiced

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    #7
    Where do you get that batteries fail at 80% health?
    Many people use iphone 5 and older iphones with the original batteries with no problems well below that level;) They dont hold charge as well or for as long as they used to but they dont just fail.
    I hope Apple shifts their battery policies to allow replacement even at 80% or more.
    That's a good move IMO.
     
  8. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #8
    They already did (along with lowering the price):

    Apple Will Replace the Battery in Your iPhone 6 or Later Even if It Passes a Genius Bar Diagnostic Test
     
  9. Applejuiced macrumors Westmere

    Applejuiced

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    #9
  10. Mlrollin91 macrumors G5

    Mlrollin91

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    #10
    It is common battery knowledge that once the battery reaches 80% health remaining, the battery becomes unstable. The chemicals are unable to hold a charge and that is why you see massive reduction in battery performance and the occasional battery shutting off at 50%. Even Apple classifies a failing battery at 80%, hence why all AppleCare devices get a free battery replacement at 80% or less health remaining. Not holding a charge is the same exact thing as "failing". The usable life of the battery is consumed, thus, it has failed.
     
  11. Hieveryone macrumors 68030

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    Apr 11, 2014
    #11
    You have 88% of your battery ok so now we must make your iPhone slow.

    Give me a break.
     
  12. C DM macrumors Westmere

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    Oct 17, 2011
    #12
    Except it's not just based on one measure:

    "This power management works by looking at a combination of the device temperature, battery state of charge, and battery impedance. Only if these variables require it, iOS will dynamically manage the maximum performance of some system components, such as the CPU and GPU, in order to prevent unexpected shutdowns."

    from https://support.apple.com/en-us/HT208387
     
  13. jav6454 macrumors P6

    jav6454

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    #13
    Yes... if you want to regain complete performance, you'll need to swap in a new battery.
     
  14. tomjleeds macrumors 6502a

    tomjleeds

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    #14
    Indeed, my 7 is similar in health to OP’s and is similarly throttled at lower levels of charge. At closer to full charge there’s no throttling at all.
     
  15. Applejuiced macrumors Westmere

    Applejuiced

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    #15
    Yeah right, nice try making excuses for faulty and defective Apple batteries.
    Smartphone batteries for about 10 years now before the iPhone 6 and 6S bad battery fiasco were stable enough and functioning without issues or shutdowns way passed 80% capacity.
    But now I guess all cellphone batteries are bad when they reach 80%. Tell us another one...
    Because Apple says so and tries to cover up their massive lies and deceit?
     
  16. Hieveryone macrumors 68030

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    #16
    Except this, except that, how about except Apple dropped the ball on this, customers are mad, and that’s pretty much all there is to it at this point.

    Nothing more nothing less.
     
  17. C DM macrumors Westmere

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    #17
    Well, if we want to just be angry and that's it, then there has certainly been all kinds of reasons for that kind of thing, not even just now. Nevertheless, it doesn't change the details.
     
  18. Applejuiced macrumors Westmere

    Applejuiced

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    #18
    Their whole approach just plain sucks in general :D
    Except if they were truthful to their customers and let them know to decide if they want this great "feature" :D
     
  19. R740 thread starter macrumors member

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    Mar 15, 2015
    #19
    Thank you for you responses and here is the update on my situation.
    Apple has mentioned that power management comes into play only at certain temperatures, battery wear and state of charge.
    The Geekbench 4 test I mentioned earlier took place when my iPhone was at 64% of charge. I charged up my phone all the way up to 100% and ran the test again. The results are surprisingly different.
    Single-Core 3491 (got 2633 before), while average is 3295.
    Multi-Core 5898 (got 4313 before), while average is 5387.

    This clearly shows that the more 'juice' you have - the better performance you get. And the difference between 64% and 100% iPhone 7 speeds are very noticeable not only in Geekbench scores, but also in real-life usage.
     
  20. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #20
    It sounds like that can depend on the device and the battery basically. My iPhone 7 benchmarks have been fairly consistently around what's expected no matter what the battery charge is (having ran those benchmarks in the 90%s, 60%s, and 30%s, for example, out of various ones that I recall).
     
  21. fred98tj macrumors 6502

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    Jul 9, 2017
    #21
    And almost certainly your battery’s SOH is better than that of the OP. Remember it’s not just one factor that the SW measures.
     
  22. Mlrollin91 macrumors G5

    Mlrollin91

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    #22
    I’m sorry but you are wrong. This has been known since the age of lithium ion batteries. This has nothing to do with Apple. This is all batteries. A simple google search will result many sources claiming this.

    Why do you think batteries are rated for ___ number of charges for 80% health. That’s how lithium ions work.

    Please have a read. http://www.cadex.com/_content/Checking_Battery_Health_on_Charge.pdf

    More specifically. Please look at page two with the graph.

    Once a battery reaches 80% health remaining, it is consumed.
     
  23. Applejuiced, Jan 3, 2018
    Last edited: Jan 3, 2018

    Applejuiced macrumors Westmere

    Applejuiced

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    #23

    Funny thing no batteries before that fiasco had issues with phones shutting off randomly.
    I have a few older iPhone 5 and 5c models with original batteries that run fine without turning off. They don't hold charge for as long as original but the devices never shut off randomly at 30% or 50% for example.
    The i6 and 6S batteries where either very bad quality or straight defective.
    And this feature was just a band aid for Apple. Instead of doing the right thing they thought they could sweep it under the rug.
    Now it came back to bite them really bad:D
     
  24. Mlrollin91 macrumors G5

    Mlrollin91

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    #24
    Just because you havent had problems doesn’t mean the issue doesn’t exist. I have laptops from a decade ago with 50% health remaining and they shut off with 75% battery life left. This is not an apple exclusive thing. It’s all lithium ions.
     
  25. Applejuiced macrumors Westmere

    Applejuiced

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    #25
    So you're trying to tell me this battery issue with millions of iPhones turning off has been happening for the past 7-8 years before the iPhone 6 and 6s?
    Weird, I been here since 2008 and didn't see any of it. Please enlight me.
     

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