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Related: If you have a Mac, you can check the health of an iPhone battery via the Console app when the phone is connected via USB. Search for the string "BatteryHealth", logged by the phone's Springboard process.
You can install it via 'brew cask install coconutbattery'
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This article does a good job of explaining the main reason: To retain runtime on a degraded battery, they underclock/undervolt the hardware.. drawing less power and producing less performance. This honestly accounts for mobile device performance loss in the majority of cases and it isn't iPhone or Apple-specific. A resets might improve performance of the flash device if it frees up additional space or does something…
This implies I could fix all my old phones with a new battery ... Could that possibly be true?
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Immagine having a car whose gas tank you are not allowed to refill...
Imagine a car with a gas tank that shrinks over time, and whose top speed drops accordingly. Imagine that some cars allow the gas tank to be changed by the user. But this one doesn't. Imagine the company that makes the car never mentions the shrinkage or the gradual reduction in top speed, and has no program or system that allows you to fix this - beyond buying a newer car.
I feel like more transparency would have been welcomed, but aside from that this is a "no win" situation, since you have to pick a winner: - Do you degrade performance but leave screen-on time relatively unchanged? - Do you degrade screen-on time but leave performance relatively unchanged? Most Android devices seem to do the opposite (lose screen-on time, but keep performance relatively unchanged). Different people w…
You make your phone buying decision based on the advertised performance of the device. To sell you one level of performance then subtly take that away I would call dishonest.
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I have a Nexus 6P and its battery is going bad. It just shuts down when it reaches 20-30%. Kind of annoying because I never know quite how much battery life I actually have remaining.
I have a similar situation. My Android (1st Gen Moto G, running Lineage OS, about 3 years old) shuts down once the battery level hits 15%. You can actually see it change from 15% to 1% for one brief moment before it shuts down. Sure, the battery is old, but this behavior is unlike the behavior of any other OS/device I've seen. I've seen some laptops with seriously messed up batteries and as far as I can remember, the…
Still does not really explain why my 4S suffered from both after an iOS update: Reduced screen-on time and degraded performance at the same time, that was a couple of years ago tho. As a user, it's just utterly baffling how apps that used to work fine suddenly became near impossible to use, like messaging apps taking ages to type a word, the phone felt like a computer with too much bloatware running in the background…
Related: If you have a Mac, you can check the health of an iPhone battery via the Console app when the phone is connected via USB. Search for the string "BatteryHealth", logged by the phone's Springboard process.
Coconut Battery also shows this, albeit with a graphical interface. You can install it via 'brew cask install coconutbattery'
I feel the same applies to Macbook as well. I've a Macbook Pro Retina 13 inch, early 2015 at a battery cycle count of 1001. From the last few weeks, the system is terribly slow. I randomly see the fan speed going berserk. :/
You should replace the battery to return full performance.
Where are folks buying replacement batteries?
I have gone through 4-5 on eBay between fakes or used genuines, and gave up.
Is there a good OEM source or are they generally off-brand? I would also replace mine if I could get my hands on one I trust.
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It does do that.. it tells you your battery needs servicing.
Maybe it warns when the problem gets more severe. But the problem described here is when the battery still has as much as 80% capacity. Source: I have 6s+, noticed it was slow recently, after some updates but not right after. Read about this. Got GeekBench and battery test. It tests normal when the battery is full, slower when battery is less full.
Battery life is great, though!