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I think the OP was referring to Low Power Mode, the manual software switch which dials down the CPU clock speed and "pulls other levers" to save battery power on the iPhone..

Right, but low power mode specifically kicks in at 20%, which is the standard point for a phone sized lithium ion battery to be less consistent for voltage supply. That's the primary purpose of low power mode: prevent voltage problems.
 
On the other hand, charge cycle degradation management is unrelated to the mAh capacity of the battery.
A phone with a larger capacity battery will last longer between charges. Ergo, fewer charging cycles per year. My Lenovo P2 with its 5000mAh battery typically lasted two days between charges. A phone with a small capacity battery that needs a charge each evening to last the day will experience a much higher number of charging cycles per year.
 
Incorrect. Any phone-sized battery from any mobile phone manufacturer can have voltage supply issues at 80% capacity, in cold conditions, or with low charge. If they don't have the throttling feature and the CPU needs a voltage higher than your battery can supply, the phone shuts off. That's a safety feature for any phone. Not shutting the phone off could cause permanent damage. All Apple did was add a layer of software control that would prevent BOTH the overly high voltage demand and the automatic shut down.

Stop drinking the koolaid. My iPhone has 90% capacity yet it has already started having shutdown issues and therefore Apple has applied power management to it.

You have yet to explain why all of the Android manufacturers are able to have phones that still perform at original spec with old batteries, yet do not shut down. If I had to guess, it may be because they PLAN for lower voltage supply as the battery wears, so their peak voltage requirement is always lower than what the battery can supply when new. That way the user doesn't get used to a phone that has high performance, then all of the sudden get a slower phone as the phone ages.
 
Mobile phones have an auto shutoff if the voltage requested is too high for the battery. That prevents damage to the phone. It's also the original reason that Apple added the throttling feature: users were complaining about the phone shutting off in situations where it was important for them to be able to continue to use the phone...like an emergency, for example.

Right, that is what they should do, shut down. But if having as little as 20% capacity regularly causes this then phones and tablets would be shutting off all the time below 20%. That doesn't happen. And obviously low power mode doesn't rectify this problem as Apple needed to throttle processors in order to solve the problem. So low power makes perfect sense for tablets as much as for phones.
 
Yes, THIS!

Apple is at no fault here. Dont know why people keep blaming them for this issue without knowing all the facts. What do you expect? Apple to overcome the laws of physics, chemistry & whatever else???

Its not like one of the worlds biggest company (in terms of market value), with 40-50 odd billion dollars of annual profits can simply ask (arguably) the best & (most probably) one of the highest paid mobile engineering & design team to come up with some revolutionary earth shattering solution in a mobile device where the so called battery can be replaceable without making the device hideous & impractical.

Its not like this planet has any shortage of raw materials or junkyards. Just use it until the ~20 dollar battery lasts and then simply throw it (along with the rest of ~980 dollar worth product) in the ocean and get a new one instead. Thanks apple :)

The issue is that Apple slows the phone AFTER you have bought it, and without adequate warning prior to purchase that this phenomenon will occur, whereas competitor phones have no such issue - the performance does not need to be throttled due to aging batteries.

Say all you want about this being "laws of physics" etc... its still bait and switch. Show me where on the box, Apple Retail Stores, or even on Apple's product pages where you buy the phones where Apple clearly states that the performance is going to degrade.

As of right now, if I go to Apple's iPhone 8 product page, it says nothing about the fact that it will slow over time: https://www.apple.com/iphone-8/specs/. It goes through pains to tell you how the installed software will take up space on your phone, and to what level of water resistance the phone is, but nothing about the phone slowing over time.

Apple is going to see the lawsuits ramp up - and Apple will loose.
 
The issue is that Apple slows the phone AFTER you have bought it, and without adequate warning prior to purchase that this phenomenon will occur, whereas competitor phones have no such issue - the performance does not need to be throttled due to aging batteries.

Say all you want about this being "laws of physics" etc... its still bait and switch. Show me where on the box, Apple Retail Stores, or even on Apple's product pages where you buy the phones where Apple clearly states that the performance is going to degrade.

As of right now, if I go to Apple's iPhone 8 product page, it says nothing about the fact that it will slow over time: https://www.apple.com/iphone-8/specs/. It goes through pains to tell you how the installed software will take up space on your phone, and to what level of water resistance the phone is, but nothing about the phone slowing over time.

Apple is going to see the lawsuits ramp up - and Apple will loose.
I agree. Pretty sure they do throttle (or atleast did until they were caught). But they found a legit reason to do it. I wont call it bait and switch. I dont need a disclaimer that an electronic item's performance will degrade over time just like I dont need a disclaimer to figure out the store brought icecream will melt if I keep it out of my fridge. I doubt anyone else does either.

Also, I was trying to be sarcastic/funny in the post you quoted. Guess I failed miserably as you/others didnt read the rest of the post which contained a simple solution for this problem. Which apple wont do so that most people would just think their devices got slower because they were old and it's time to buy a new one. Considering apple thinks the battery will degrade enough in 1-2 years to warrant throttling, I can not think of any reason for not providing a user replaceable battery other than just plain old greed.
 
Blame battery tech not Apple. Apple didn't invent lithium-ion batteries. They simply chemically degrade over time due to charge and discharge cycles. No devices (not just smartphones) are immune from battery degradation. Same reason your cordless dustbuster/stick vac battery wont hold a charge after a certain amount of time; it has nothing to do with the device the battery is in but number or charge/discharge cycles.



Huh? What does battery capacity have to do with number recharge cycles and chemical degradation of a lithium-ion battery? ALL batteries degrade over time.


"The lithium-ion battery works on ion movement between the positive and negative electrodes. In theory such a mechanism should work forever, but cycling, elevated temperature and aging decrease the performance over time. Manufacturers take a conservative approach and specify the life of Li-ion in most consumer products as being between 300 and 500 discharge/charge cycles."

Temperature 40% charge 100% charge
0°C 98% (after 1 year) 94% (after 1 year)
25°C 96% (after 1 year) 80% (after 1 year)
40°C 85% (after 1 year) 65% (after 1 year)
60°C 75% (after 1 year) 60% (after 3 months)

So charge cycles and ambient temperature make a HUGE difference in life of a battery. And since no one keeps their devices at 0°C (freezing point) and factoring most charge the battery to 100% each time, a 20% degradation after 1 year per the chart is proven by science. It's not simply "Apple said"

It’s pretty simple. Since you’re a fan of math go ahead take those percentages you quoted then apply them to a 1500 mah battery vs a 2000 mah battery and see which one provides more power over time.
 
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My Battery is still at 100% maximum capacity and I have no option to disable the peak performance capability
There's nothing to disable in your case. You don't have battery management enabled as your battery is fine.
If you are going to go with a car analogy it is more like a car not letting you downshift to get more power when driving so that it can maintain a certain level of fuel efficiency and get the most out of a tank of gas.
Well, if downshifting can mean a good likelihood that the car will just stall, it's certainly something to consider.

What the literal F. I was under the impression that Apple "fixed" this with iPhone 8 and above. If I had bought an iPhone 8 and now I have to deal with this ****, I'd be PISSED.

Is it better than the iPhone shutting down on you? Sure. But folks, remember that only apple seems to have this problem - no other smartphone manufacturer seems to have an issue where battery degradation requires slowing the phone in order to prevent reboots.
Remember, this only kicks in if needed -- if the phone would otherwise likely shut down. And it can be disabled by the user as well.

When does low power mode activate on an iPhone? 20% charge. 20% charge is the standard threshold for when you can expect the voltage supply in a phone sized lithium ion battery to become less consistent.

Right, but low power mode specifically kicks in at 20%, which is the standard point for a phone sized lithium ion battery to be less consistent for voltage supply. That's the primary purpose of low power mode: prevent voltage problems.
The suggestion to enable Low Power Mode comes up at the usual 20% battery warning (and then also 10%), but the user selects whether or not to enable it. Generally these are more related to there not being that much battery left and thus the user perhaps wanting to conserve some more battery if they can't recharge sometime soon.
 
This continues to be one of the dumbest controversies about an Apple product ever. It's like complaining about the anti-lock brakes on your car as if it's a conspiracy by auto manufacturers to prevent you from using the brakes to their full extent.

There really is a car analogy for everything, isn't there? :)
 
Would you prefer your iPhone turn into a grenade like the Note 7 did instead?
Really!? That's a ridiculous assumption, you've got to be kidding right!? First of all those issues didn't exist prior to iOS 11 update on iPhone 6. Secondly, Apple claims it as a feature to keep a much better user experience so their phone won't shut down but cripple them down to the point of almost not tolerable for some users thus ended up buying a newer phone. It has nothing to do with safety and exploding iPhone it's just a battery declining it's capacity. And most of all this issue is for an old battery most likely over a year old battery, Note 7 is affected with a new battery a bad design from Samsung that ended up exploding.
 
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Well, if downshifting can mean a good likelihood that the car will just stall, it's certainly something to consider.

True. Maybe the better analogy is that if your gas tank has less than 20% in it then it might stall when you downshift. Therefore the system prevents you from doing this. That may not be a fundamental design flaw, but disclosing that is how the system works would be pretty important.
 
A phone with a larger capacity battery will last longer between charges. Ergo, fewer charging cycles per year. My Lenovo P2 with its 5000mAh battery typically lasted two days between charges. A phone with a small capacity battery that needs a charge each evening to last the day will experience a much higher number of charging cycles per year.
A fair point, but the capacity differences between common devices aren’t really of that magnitude.

o93ehh.jpg


For example, the Note 9 lasts 19% longer than the Xs in these conditions, which probably won’t translate to a significantly fewer number of charge cycles over a, say, three year lifespan.
 
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I think I need to jump in here. People lack a lot of knowledge.

The first shutdowns occured when the battery charge was below 50% and it was cold outside. (on the iPhone 6)

Lets have a short look how battery technology works.

- Batteries degrade over time
- Fast charging degrades them a lot faster! (this is why I think its a very good move to NOT include them)
- Any sort of heat or cold degrades them also faster! (this is also connected to fast charging, it can make your battery a little bit heated up)
- A battery works the best in moderate temperatures lets say 15-20 degree. More or less temperature will affect your battery a lot. An (older)electric car or electric skateboard(that does NOT heatup the battery compartment) loses around 50% or more range in the winter! (tesla heats or cools the battery to get a decent performance)

The iPhone 6 Battery has for example 1810mah at 3.82volts. Fully charged the battery has around 4.2volts. The battery will discharge to around 3.4 to 3.5v (its very depenend how well the battery quality is).

So some applications that need performance need a lot of voltage. When the battery is at 100% its very easy for the battery to output a steady 4.0 volts for example. When the battery is also at 30% its hard to even steady provide 3.8volts. Here is to say when the battery is like 6000mah instead of 1810mah then there is not much of a problem to hold the 3.8volts. So even with 30% left you have almost 2000mah over, like a fully charged phone.

So when the battery is degraded and low in charge AND in a cold envirement it loses A LOT of its original capacity to hold the voltages up to 3.8v. And then what happens is a battery sag. It drops below 2.8v or more. This can damage the battery forever so every manufacturer has an BMS(battery management system) that will stop outputing voltage when it drops below 2.8v for example. That will immediately shut down your phone! To protect the battery and your device and you. This is what happend and why Apple decided to get rid of these peak performances at certain levels of the battery. Some things are at a point not predictable anymore. So when the battery is weak and the phone showed some unexpected shutdowns this will kick in to prevent that.

It was probably not the best move to even implement this, so that user see something and can change something. Because almost nobody understands it...
 
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How come the 5s never needed this and now even the 8 does? I find it weird. Almost like they wanna make their latest phones old before their time. The 8 was released 12 months ago!!

If it's a design problem then solve the issue with the new phones, but they release models with the same problem... I don't get it.
 
It is impressive how many people believe this is a "feature", instead of expecting a phone with good hardware, they are already indoctrinated to celebrate software that throttles your phone to cover the failure of planned inferior parts. Is not that customers ignore their pricy phones have cheap parts inside that will fail sooner than others, they are just willing to buy more Apple phones.
 
How come the 5s never needed this and now even the 8 does? I find it weird. Almost like they wanna make their latest phones old before their time. The 8 was released 12 months ago!!

If it's a design problem then solve the issue with the new phones, but they release models with the same problem... I don't get it.
They have been touting how their mobile CPUs are as fast as desktop CPU's. (You see how they compare the new iPad Pro to an Xbox One S?)
 
Why are you acting like you're an Apple hardware engineer? You literally have no idea what Apple did in their design.

1) One doesn't have to work at Apple to understand basic engineering concepts (which are largely math BTW since you seem to think it some black art).

2) Apple ADMITTED what occurred: under load a degraded battery couldn't provide sufficient power to meet the CPU's designed by Apple power specifications causing it to crash.

3) Basic logic from #2 either A) Apple designed the CPU with inadequate tolerances for inevitable battery degradation, or B) Apple chose a battery for it's overall system design that could not meet the CPU designed power needs after X number of recharges, or C) BOTH.
 
How come the 5s never needed this and now even the 8 does? I find it weird. Almost like they wanna make their latest phones old before their time. The 8 was released 12 months ago!!

If it's a design problem then solve the issue with the new phones, but they release models with the same problem... I don't get it.
Perhaps the mobile hardware at the time didn't outpace what the battery technology could support?
 
Show me where on the box, Apple Retail Stores, or even on Apple's product pages where you buy the phones where Apple clearly states that the performance is going to degrade.

As of right now, if I go to Apple's iPhone 8 product page, it says nothing about the fact that it will slow over time: https://www.apple.com/iphone-8/specs/. It goes through pains to tell you how the installed software will take up space on your phone, and to what level of water resistance the phone is, but nothing about the phone slowing over time.

No company would advertise that their product would suck over time. If that makes sense.
 
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