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Why does it stay on 100% for so long?
- Thread starter Jayson A
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Short answer: iOS does a bad job of estimating.
Long answer:
Let's say you have a x/y graph of a straight line. If someone gives you a Y value, it is easy to find the X value.
Now look at the line of a graph of voltage/time graph of any battery, it doesn't have a straight line near the 0℅ and 100℅ points of the graph.
With the example graph I gave, if the phone reads the battery as between 3.9 and 3.7V, it might think zero time has past and estimates it has 100℅ still.
This is same reason on the other side of the graph, if the phone reads between 3.5V or lower, it is harder to estimate the lime left.
Example graph of a battery.
Attachments
Is this your first iPhone? I've had a 4, 5, 6, and now a 7 and they have all done this on every iOS version I've ever seen.
My theory is that apple wants you to think you have more battery than you really do towards the beginning of a full charge and eventually things speed up and catch up to accurate as the battery drains.
What is new in iOS 10 though is that the battery indicator doesn't start visually depleting till it hits 95% now. Used to be 98% pre iOS 10 and you'd see a sliver gone. Just another illusion to make you think you have more battery than you do.
My theory is that apple wants you to think you have more battery than you really do towards the beginning of a full charge and eventually things speed up and catch up to accurate as the battery drains.
What is new in iOS 10 though is that the battery indicator doesn't start visually depleting till it hits 95% now. Used to be 98% pre iOS 10 and you'd see a sliver gone. Just another illusion to make you think you have more battery than you do.
I read an article a long time and somebody explained it was done on purpose to make you think you have good battery life.
Won't it just report whatever the system is telling it? Same as the battery % is showing?
I don't think so. I used a battery app and it gave me different result than the actual iPhone battery percentage.
iOS reports anything between 95-100% as 100%. Once iOS drops to 94% the battery indicator starts drop in a linear fashion.
Actual vs. Reporting
95-100% = 100%
47.5 = 50%
24.25% = 25%
For the record, macOS does this as well. Its been this way for years and years now.
Actual vs. Reporting
95-100% = 100%
47.5 = 50%
24.25% = 25%
For the record, macOS does this as well. Its been this way for years and years now.
I just got the 7 and noticed the 100% battery "issue" as well. After a full charge, I unplug the phone and use it to play YouTube video. It can play videos for almost 20 minutes before dropping to 99%. That's really weird.
It's kind of the reverse problem with my car since it was new. When the yellow low-fuel warning light comes on, it still has at least 50 miles of range remaining.(or almost 70 miles if cruising at freeway speed)
It's kind of the reverse problem with my car since it was new. When the yellow low-fuel warning light comes on, it still has at least 50 miles of range remaining.(or almost 70 miles if cruising at freeway speed)
Battery estimates based on voltage are not linear and have smaller fluctuations at the extremes.
The percentage is an estimate and inaccurate.
Just turn it off and don't worry about it.
Just turn it off and don't worry about it.
They are certainly estimated and thus won't be perfect generally but they are usually not inaccurate in the sense of not being useful. The battery meter that's there with or without the percentage is still based on the same estimates.
It's done with purpose. It has to to with the human psychology. No one likes to see 99% a minute after they unplugged their phone. It stays on 100% for a while even though the battery isn't 100% fully charged anymore. After a while it'll go down to 99% and counts down faster than it stayed on 100%. It's all to ease the human mind.
No one likes to see it go faster and lower when it's below 100% either. If it was done for those types of purposes it sure doesn't help ease the human mind once it's dropping faster, and really makes it worse in that sense.
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Ah, so Apple did that with other phones and devices that run Android and other operating systems too? Well, that totally explains it.
Ah, an even more widespread/complex conspiracy theory when a more limited/simpler one doesn't quite hold up. At least that really gives it all more credit as a conspiracy theory.Apple probably didn't invent it
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