General Extensive Battery Testing on iOS 12.2 with iPhone X and iPad Pro 10.5

Discussion in 'iOS 12' started by aakshey, May 8, 2019.

  1. aakshey, May 8, 2019
    Last edited: May 8, 2019

    aakshey macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #1
    Hi there.

    I did some extensive battery testing on iOS 12.2 under the following conditions:

    The iPad Pro 10.5 is cellular.

    Cellular is turned on on both devices.

    I used iMazing Windows to measure the real battery percentage, not the iOS reading, which usually differs quite a bit when its over 80%.

    iPhone X is around 101-102% health after 157 cycles. iPad Pro 10.5 is around 89% health after around 220 cycles.

    Both devices were connected to Wifi 5Ghz.

    Note - My real world usage reflects battery life far worse than the below even if I am just doing Safari and Mail.

    The extrapolated battery life assumes continuous screen on time with 0 standby and no interruption.

    Autobrightness was on but not changing the brightness after I set it.

    iPhone X

    iMazing reading of 99% to 90% on Netflix, 25-30% brightness, speakers off.

    iPhone reading from 100% to 95%

    Approx 55 minutes

    Extrapolated battery life ~9.5 hrs.


    iMazing reading of 90% to 85% on Netflix, 75-80% brightness, speakers off.

    Approx 28 minutes

    Extrapolated battery life ~9 hrs.


    iMazing reading of 85% to 80% on Netflix, 75-80% brightness, speakers at 50%.

    Approx 26 minutes

    Extrapolated battery life ~8.5 hrs.

    iMazing reading of 80% to 75% on Netflix, 75-80% brightness, speakers at 100%.

    Approx 20 minutes

    Extrapolated battery life ~6.5 hrs


    60 minutes of NetFlix, Wifi off, 4G still on, Netflix, 75-80% brightness, speakers 50%

    Approx 11%

    Extrapolated battery life ~9 hrs


    iPad Pro 10.5

    iMazing reading of 100% to 90% on Netflix, 50% brightness, speakers off.

    iPhone reading from 100% to 94%

    Approx 54 minutes

    Extrapolated battery life ~9 hrs.


    87% to 82% on Netflix, 100% brightness, speakers off.

    Approx 19 minutes

    Extrapolated battery life ~6-6.5 hrs.


    81% to ~76% on Netflix, 50% brightness, 100% speakers.

    Approx 19 minutes

    Extrapolated battery life ~6-6.5 hrs






     
  2. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #2
    @FeliApple Would love it if you could repeat the above Tests on iOS 9 using Coconut Battery or Windows?

    Alternately, you could make each rest of exactly 60 minutes?
     
  3. FeliApple macrumors 65816

    FeliApple

    Joined:
    Apr 8, 2015
    #3
    @aakshey I'll repeat those tests exactly like you did them and let you know. My devices are: An iPhone 6s running iOS 9.3.3; and an iPad Pro 9.7 on iOS 9.3.4
     
  4. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #4
    Thank You @FeliApple

    Do note, the readings to take are from Coconut/iMazing (and not iOS), unless specified otherwise. :)
     
  5. treichert macrumors 6502

    Joined:
    Nov 7, 2007
    Location:
    Aachen, Germany
  6. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #6
    Coconut shows the real %age. iOS shows a slightly manipulated one so it can prolong your usage at 100. It spoils it across the entire range.
     
  7. FeliApple macrumors 65816

    FeliApple

    Joined:
    Apr 8, 2015
    #7
    iPad Pro 9.7 on iOS 9.3.4: beginning of reading: 100% (as measured by Coconut).
    Battery health: 85.2%, as measured with coconut battery right before starting, with the iPad at 100% battery.
    Battery cycles: 334.
    50% brightness, Netflix, 0% speakers, Approx. 54 minutes.
    Coconut reading from 100% to 89%.

    100% brightness, Netflix, 0% speakers, approx. 19 minutes
    Coconut reading from 89% to 80%.

    50% brightness, Netflix, Approx. 19 minutes, 100% speakers.
    Coconut reading from 80% to 75%.

    I must admit, I am extremely negatively surprised. These results are paltry. I have seen a drop in average battery life throughout the iPad's lifetime, but it was negligible, going from an average of 14 hours to the current 12-13 hours with the same usage and brightness.
    My results are insanely better than this during regular usage, but I use it with 20% brightness.
    iOS metric finished with around an hour and a half of usage with 80% battery left. During regular usage, I'm seeing around 3.5 hours of usage before it hits 80%.
    @aakshey, what are your thoughts?
     
  8. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #8
    Dunno what to say.

    My real world results are far worse than my scientific ones.

    It’s possible your background activity is just adding up? Or that 20% brightness makes a lot of difference?

    Can you check the 6s?

    @FeliApple
     
  9. FeliApple macrumors 65816

    FeliApple

    Joined:
    Apr 8, 2015
    #9
    I'll do it when my iPhone when I can, but I suddenly remembered that a 12.9 iPad Pro 1st gen user stated that he used his iPad with 100% brightness and that it lasted 4 hours. He also stated that battery life was normal. I knew brightness was the main factor, but I expected better.
    I'm almost sure that with brightness that high, a decent battery life is next to impossible.
    My iPhone 6s, now: 20% brightness, 37% left, 5h 35min of on-screen battery usage. If I increase the brightness I'd get 4.5-5 hours at most at 1%. Brightness is key.
     
  10. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #10
    So you’re saying going from 50% brightness to 20% brightness doubles your battery life?

    I usually have my brightness between 50% and 100%.
     
  11. FeliApple macrumors 65816

    FeliApple

    Joined:
    Apr 8, 2015
    #11
    No, that's with 100%. I'll get 8.5 with 20%, 6.5-7 with 50%, and 5 (? with 100%. Not sure, I don't use it with 100% that often. I recall getting around 5 when I pushed it.
     
  12. Radon87000 macrumors 604

    Joined:
    Nov 29, 2013
    #12
    They absolutely destroyed the battery life on iOS 12.2. My iPhone 7 Plus and iPhone X are both barely making it through a day. You can literally see the battery percentage drop every 2 minutes on the 7 Plus. 98% battery health. Was never this bad on iOS 10.
     
  13. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #13
    Probably true.

    As I said, my real world usage is much less than the above.

    Somebody needs to sue Apple to the Stone Age. I already have all the proof and research sorted if they want to take my help. I have done complex measurements to the same effect.
     
  14. Knight3 macrumors 6502

    Joined:
    Oct 19, 2018
    #14
    Could you elaborate on the complex part a little more?
     
  15. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #15
    Measurements and all in almost real time. In watt hours. Compared between iOS 11 and 12.
     
  16. I7guy macrumors P6

    I7guy

    Joined:
    Nov 30, 2013
    Location:
    Gotta be in it to win it
    #16
    Try 12.3. Battery life on max is pretty good, with a wet finger in the air approach.
     
  17. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #17
    How did you check so quickly? Isn't it just out?
     
  18. I7guy macrumors P6

    I7guy

    Joined:
    Nov 30, 2013
    Location:
    Gotta be in it to win it
    #18
    When I went to bed battery was at the same place approximately as the beta. Means to me battery life is on par with the beta, which was good.
     
  19. Radon87000 macrumors 604

    Joined:
    Nov 29, 2013
    #19
    It’s probably manageable on the XS Max but the older devices have been wrecked. The iPhone X now lasts just 1 day as opposed to almost 2 on iOS 11. THe iPhone 7 Plus lasts half a day before kicking the bucket. The battery percentage doesn’t fall much in the 80-100 range. Once it falls below 70 it’s 1% every 2 minutes on LTE. Both phones are on 98&% battery health
     
  20. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #20
    Actually if I change my Airtel sim for a Jio sim, the battery life I get is the same as iOS 11. On my X.
     
  21. I7guy macrumors P6

    I7guy

    Joined:
    Nov 30, 2013
    Location:
    Gotta be in it to win it
    #21
    Battery life on 5s is pretty good for what they are. Surprised about the x.
     
  22. aakshey thread starter macrumors 65816

    aakshey

    Joined:
    Jun 13, 2016
    #22
    If it’s a launch day battery it’s defective if what you’re saying is true.

    In my experience Apple batteries suck after 6-9+ months of use and/or 250+ cycles.
     
  23. Radon87000 macrumors 604

    Joined:
    Nov 29, 2013
    #23
    Scientific testing shows the same battery life. Actually worse on 12.3



    Scientific testing shows iOS 10.3.3 shows double battery life compared to 12.3. No kidding. DOUBLE




    Apple’s back to its old tricks. Now that they realise they can’t engage in planned obsolescence in performance, they decided to do it with battery life instead. Battery life has been halved on all iPhones since iOS 10.
    --- Post Merged, May 16, 2019 at 12:07 AM ---
    Apple batteries do suck. It’s the luck of the draw. My 7 Plus battery went from 100% to 91% in 3 years. 2 months of light usage after replacing in December and now it’s down to 98%. Don’t think it’s going to last as long as the original battery.

    iPhone X, one year usage battery health % is 97%. Replaced with new battery in November. Battery health down to 97% after just 6 months.

    iPhone 6s brand new purchased in March 2019. Mom uses it for music, streaming shows and light gaming. Battery health down to 97% after just 3 months.

    Galaxy Note 9. 5 months used. 100% battery health.


    In my experience, Android flagships last almost 2 days easily but lesser than brand new iPhones. iPhones start dropping battery health after just a few months and end up below Androids which manage to retain their battery health for longer.
     
  24. guesswho183 macrumors newbie

    guesswho183

    Joined:
    Sep 24, 2018
    #24
    Why are you guys updating if you want best battery from your phone. It known that best battery life is with IOS that phone come with. I would never update mine X from IOS 11 but my carrier need to be updated because of 4G network...and now I'm on latest IOS :)
     
  25. badatusernames, May 16, 2019 at 12:52 AM
    Last edited: May 19, 2019 at 5:09 AM

    badatusernames macrumors regular

    badatusernames

    Joined:
    Jul 1, 2018
    #25
    Not a scientific test by any means. A more scientific test would have done that test multiple times and try to stage the same conditions are much as possible. For example, while doing the test did your phone receive Mail in the background? What was the WiFi signal like on both the devices? Also, estimating the battery drain like that isn’t going to be accurate.

    I think the most “scientific” test we can do is having the same iOS settings and draining the battery with a video test or something similar like Geekbench, the latter being more processor intensive. I don’t know if you’ve ever looked at the wattage of your iPhone while using it (using Coconut battery). You’ll notice it can fluctuate greatly. I would like a test that captures the battery was wattage very 30 seconds and saves it to a spreadsheet so you can chart it on a graph. I’m sure it can be done, if you’re aware of any app that does so please let me know.

    I’m not discounting that you feel that you battery life has gotten worse, the fact that you’ve noticed it shows it’s no longer meeting your expectations.

    I have an iPhone X (got in in March so the battery is still at 100%). I can maybe do a couple of tests on my phone for comparison. :)
     

Share This Page