iOS 14.3 Battery Life / Battery Drain / Battery Performance Test / Benchmark Tests ( 18C66 )

Hello everyone, and welcome to the iOS 14.3 battery performance video.

iOS 14.3 was released by Apple as a release candidate this time, not as a GM. Also we had 2 release candidates build 18C65 and then a few days later 18C66. This video was done on build 18C66 that I am betting on will be the same release as we will see release today December 14th.
It looks like in the future Apple will be naming the final release that
goes out early to developers Release Candidate before it is pushed to the general public.

This video was shot 4 days after iOS 14.3 was installed, so it had time to settle in. I have seen many comments that it takes about a week for battery performance to optimize itself after an iOS update. I have always been skeptical of this statement as I have never personally had bad battery life right after I update. If I restore and download backup from iCloud well then that is another story. So I decided to run the battery test 5 days after I updated them. In those 5 days they were just idling with power connected. So let’s run the battery test again, and see if we will get some different results this time around.

Before the test was run the devices were set to 25% display brightness, auto brightness has been disabled, all devices use same settings, and are connected to the same access point.

How Geekbench works :

Geekbench 4 battery scores measure the battery life of a device when running processor-intensive applications. It provides a consistent workload to the device, and generates a Geekbench score by evaluating the amount of work that it is able to do while the battery is discharging and the amount of time it takes for the battery to discharge.

The battery benchmark can be run in Full Discharge mode, from 100% to 0% battery level, to provide a high level of confidence in a device’s battery performance. The battery benchmark can also be run in Partial Discharge mode, for 3 hours. If the battery benchmark is stopped after 10 minutes, by the user or by the battery reaching 0%, then the result will be saved and can be uploaded. Battery benchmark scores gathered by any method except the Full Discharge mode provide a medium level of confidence in a device’s battery performance, and longer tests are more reliable.

When comparing scores, remember that higher scores are better, and double the score indicates double the performance.

Music by Niwel (see credits below)

Track 01 : Aurora
Track 02 : Bad Love

Niwel is a french music producer.





SOUNDCLOUD: @niwel-516897768


CONTACT: [email protected]

00:00 Initial Setup
01:11 Battery Test Start
10:10 iOS 14.3 Geekbench Test
12:07 iOS 14.3 Antutu HTML5 Test .

What do you think?

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  1. iOS 14.3 Battery test was shot on the RC2 version that was released by Apple last week. It is identical to the version that was released today.
    As I did do an RC 2 speed test video, I have included benchmark tests in this video as well.

  2. People I have an XR i have the iOS 14.0 should I update it to the iOS 14.3? I mean because of the battery thing? Rn I have it all perfect but idk if I should update it, was it change in the battery life?

  3. @iAppleBytes Do you advice to swap iOS14.3 to the iOS13.6 ? Seems that iOS14.3 consume a lot of battery – Thanks!

  4. iOS 14.3. SX max. – does not switch from WiFi to cellular data unless you turn off phone and restart. 🙁

  5. gald i watched this video. I am staying on ios 13.5.1 for now, until the ios 14.x can be the same or better.

  6. do u know if some 6s have a serious battery issue after updating to 14.3 ? bc it drains even withou using , and using almost last for 3hours , and if u know that 14.4 will fix that.

  7. I have iPhone se1. Last update kill my battery. I have buy a new battery. And I have found the best solution to don’t have batterie issues : NO MORE IOS UPDATE.

  8. iPhone is very expensive. Why battery are so small????? 5000ma should be the minimum for iPhone. Samsung huwawei , allways use big battery. Why not Apple?

  9. i have an iphone se 2020 and after upgrading to 14.3 the battery health dropped to 98% . I charged it full in one night and with airplane mode and background app refresh off, on the next morning i had 96%.

  10. я не понимаю почему в идентичных условиях мой ip 7 живет 2часа 45 мин 1646 балов

  11. Apple are so manipulative. Since they were caught in the battery gate scandal a few years back they have become more creative with battery manipulation and ultimately blatant in their forced upgrade scams. Deliberately debilitating battery performance. Discharging, degrading whilst switched off..removal of power buttons (AirPods/AirPods max) etc, ensures users have no control over the longevity of their devices. They’re messing with batteries is simply another planned obsolescence tactic.

  12. I updated my second SE (for test) to 14.3 on 21.12.2020. Results for me:

    iOS 14.2 – 1780 pts./2:58 hrs.

    iOS 14.3 – 1660 pts./2:46 hrs.

    Battery health is 90%.

    I'm back to 14.2 on my test SE and will stay on 13.6.1 on my main SE.

  13. Watching it on iOS 13.4.1. iPhone XR xD
    So glad I watched this video, made me decide not to upgrade to iOS 14. Have my phone for 2 years and battery life dropped since then only to 97%.

  14. I have iPhone XR with iOS 13.2.3 from the box, and i don’t upgrade, because battery is ugly on iOS 14!

  15. 10:03 is my favorite SIMPLE Graph that says it all ( for me )…
    after iOS 13.5.1
    battery life dropped significantly and Never came back….

    one could conclude its best to stay in iOS 13.5.x and NOT upgrade if your battery is on the fritz.


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