Linked by Thom Holwerda on Wed 20th Dec 2017 17:36 UTC
Apple

A Reddit post from last week has sparked a discussion regarding iPhone performance as a function of battery age. While we expect battery capacity to decrease as batteries age, we expect processor performance to stay the same. However, users with older iPhones with lower-than-expected Geekbench 4 scores have reported that replacing the battery increases their score (as well as the performance of the phone). What's going on here? How many phones are experiencing decreased Geekbench 4 score?

To answer these questions I've plotted the kernel density of Geekbench 4 single-core scores for the iPhone 6s and the iPhone 7 running different versions of iOS. Scores obtained in low-power mode are not included in the distribution.

Evidence seems to be mounting that Apple is decreasing the clock speed of iPhones with decreased battery capacity to maintain the advertised battery life.

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replace the battery
by mmrezaie on Wed 20th Dec 2017 19:35 UTC
mmrezaie
Member since:
2006-05-09

Is there a way to see how much the battery has been decreased in capacity and if I can replace the battery of the old phones?

It would be a waste if we just threw the whole phone out because only the battery is bad!

Reply Score: 2

RE: replace the battery
by quatermass on Wed 20th Dec 2017 22:06 in reply to "replace the battery"
quatermass Member since:
2005-08-03

Plenty services offering replacement batteries.

You did know Apple sell 'non-replaceable' batteries in their phones and we know batteries in phones only really last about 18 months in the real-world.

So really did you just ignore this issue when you selected a Apple Phone?

Reply Parent Score: -1

RE[2]: replace the battery
by Kochise on Thu 21st Dec 2017 07:52 in reply to "RE: replace the battery"
Kochise Member since:
2006-03-03

It's not like the iPod battery fraud haven't happened already in the past... People who learned their lesson would have chosen a smartphone with replaceable battery. Still using my 2008 Nokia N95 and 2011 HTC Evo3D with no performance loss, just changed the batteries when they went belly up.

Reply Parent Score: 0

RE[2]: replace the battery
by zima on Wed 27th Dec 2017 00:52 in reply to "RE: replace the battery"
zima Member since:
2005-07-06

we know batteries in phones only really last about 18 months in the real-world.

That's demonstrably not universally true - in my secondary phone there's a 12 years old battery which shows little wear, still lasts over a week.

Reply Parent Score: 2

RE: replace the battery
by REM2000 on Thu 21st Dec 2017 09:20 in reply to "replace the battery"
REM2000 Member since:
2006-07-25

On the Mac you can use a free app called coconut battery which will let you know the wear level of your Mac and iOS devices. I use it a lot for myself and my friends

Reply Parent Score: 2

RE: replace the battery
by Tony Swash on Fri 22nd Dec 2017 13:23 in reply to "replace the battery"
Tony Swash Member since:
2009-08-22

[q]Is there a way to see how much the battery has been decreased in capacity and if I can replace the battery of the old phones?
/q]


This app does precisely that and works very well

https://itunes.apple.com/us/app/battery-life-check-runtimes/id108093...

Reply Parent Score: 0