My iPhone has been having issues with the charged battery going to low or no charge and shutting off suddenly. After the 15.7.3 update the charging% seems to be increasing at a slower, maybe more reasonable rate. The issue seems to have appeared or became worse after one of the previous updates. Did the update include a fix or could it just have fixed bad code by updating in general?
iPhone SE
Zazierbi ~ Apple regards 80% Maximum Capacity as due for battery replacement. And an original iPhone 6S+ battery is well overdue for replacement after so many years. Also "100% to 1% or outright breakdown in less than 5 minutes" is the behaviour of a depleted battery, not a software bug. ...So have the weak, aging battery replaced:
About genuine iPhone batteries
(Articles found by searching Apple's Knowledge Base.)
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Zazierbi ~ Apple regards 80% Maximum Capacity as due for battery replacement. And an original iPhone 6S+ battery is well overdue for replacement after so many years. Also "100% to 1% or outright breakdown in less than 5 minutes" is the behaviour of a depleted battery, not a software bug. ...So have the weak, aging battery replaced:
About genuine iPhone batteries
(Articles found by searching Apple's Knowledge Base.)
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Zazierbi wrote: "...this behavior appeared immediately when the update was completed, and never happened before, so if it’s not a bug, at least it must have something to do with the way the new software uses the energy, right?..."
No, the long process of applying an iOS update to an old iPhone with a weak, aging battery can simply be the proverbial "straw that broke the camel's back." We see it often here on ASC. Batteries gradually deplete without being noticed until they reach a tipping point – and then suddenly fail very obviously.
I suspect the algorithm which estimates the max capacity isn't calibrated for accuracy over so many years – so your 83% is probably misleading and more likely less than 80%.
And your 6S+ is only obselete in the sense of not being updatable to the latest iOS 16. With a new battery it will work as good as new.
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iPhoned Said:
Did iOS 15.7.3 fix any battery issue(s)?:
My iPhone has been having issues with the charged battery going to low or no charge and shutting off suddenly. After the 15.7.3 update the charging% seems to be increasing at a slower, maybe more reasonable rate. The issue seems to have appeared or became worse after one of the previous updates. Did the update include a fix or could it just have fixed bad code by updating in general?
It does not fix the battery issue itself, but it does fix a harmful or unwanted software or code or even forces the phone’s software to take it away.
And what is the Maximum Capacity % here?
Here’s my follow-up. I stumbled on a sage IOS user who, without all the Apple Geek Speak about replacing batteries, forced restarts, restore to factory settings, etc, explained in his/her logic as follows: (I’m paraphrasing)… “Understand that 15.7.3 is a fairly large update. The IOS operating system is extensive, and I have found that it may take two days to a week to get thru all of the factory installed apps and user downloaded apps and make all the fixes and patches each time Apple does an update. Keep restarting your phone, keep recharging, and I think you’ll find you’ll return to an acceptable battery life.” Well, in my case, he/she was exactly right. I am now charging overnight, running all day (normal usage) and still showing +35% battery remaining in the evening. I feel I’m back to “weakened by age normal battery” but I will not be wasting $$$ on a new battery or restoring to factory settings, or succumbing to the Vendor planned obsolescence. NOW, PLEASE, SOMEONE TELL ME HOW TO GET OUT THIS EMAIL CHAIN, MY MAILBOX IS BEING FLOODED!
KatieJ808 wrote:
I have an iphone 6s, battery replaced at the Apple Store a year ago, health 90%, and I'm having exactly the same issues - coming off overnight charge showing 100%, then screen going black and down to 10%, then having to put it on charge again; also battery charge % counting down if I so much as look at it with no apps running.
I'm contemplating buying a 14 Pro anyway, but had intended to keep this as a decent spare. At present, it is pretty much useless outside the home unless I bring a power pack with me.
Is this ever going to be fixed or is it intentional to force us to upgrade to newer models? The 6s isn't supported for ios16 after all.
Given the age of your phone, I would guess that's a hardware issue. No software update is going to fix it. You could make a Genious Bar appointment and have them evaluate it. You won't be charged unless you authorize repairs.
Zazierbi ~ Does your iPhone 6S+ still have its original battery?
And what's the Maximum Capacity % here?...
Settings > Battery > Battery Health
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EileenKC wrote: "That also just happened to me!! The battery drained from 100 to 10 in a matter of minutes after the update."
Eileen ~ What model of iPhone is it?...
Settings > General > About > Model Name
And what version of iOS is it running?...
Settings > General > About > Software Version
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EileenKC wrote: "I replaced the battery about 2 years ago and is at 88% health..."
88% is good. Was the battery replaced at an Apple store or by another qualified technician using a genuine iPhone battery?...
About genuine iPhone batteries
Repair Provider Verification - Official Apple Support
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Zazierbi wrote:
But this behavior appeared immediately when the update was completed, and never happened before, so if it’s not a bug, at least it must have something to do with the way the new software uses the energy, right?
It's my understanding that updating iOS re-calibrates the sensors that determine the capacity. And, as Alancito says, the stress of an update can be what pushes the battery over the edge.
My iPhone 11 Pro battery was at 81% just before iOS 16 came out. Apple was willing to replace it (for a fee) even though it wasn't showing as below 80%. Their diagnostics were more accurate and showed it needed replaced. I made sure to do it before updating.
While it may have an outsized effect on a borderline battery (draining in minutes), the overall issue is still with the OS update. I have an SE that had 94% battery health prior to the update and would typically last for ~3 days with my normal use. immediately after the update, the battery began to drain at an accelerated rate and will only last about 16 hours after a full charge and that is with GPS disabled, Bluetooth off, and the screen off (i.e not using the phone). And if I put it in low power mode, it makes no difference. There are enough other people with similar issues that cannot all be attributed to weak batteries.
GrittyMax wrote: "...There are enough other people with similar issues that cannot all be attributed to weak batteries."
True – which is why we ask some key questions to identify weak batteries overdue for replacement.
Your 2nd or 3rd gen SE with presumably its original battery and 94% health isn't weak. For that case, Apple's iPhone User Guide says: "If your iPhone isn’t working as expected, you can try restarting it by turning it off, then turning it back on. If turning it off and on doesn’t fix the issue, try forcing it to restart.":
Turn iPhone on or off - Apple Support
...And if that doesn't help, try this:
Restore your iPhone to factory settings
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It was apparently just a security update. Apple security updates - Apple Support
The same thing is happening on my iPhone. I applied 15.7.3 last night. This morning, when I unplugged it from the charger, the batter went from 100% to 10% in about 10 minutes. Nothing was running on the phone.
Previous to this update, a 100% charge would last for hours, even while running apps like Sirius streaming shows for hours.
I need to back out of this latest update asap! Otherwise, my iPhone is totally useless unless plugged in to the charger.
Not for me, it didn't. My battery health is 80%, and all was fine until I upgraded to IOS 15.7*? I was on IOS 14 before and the battery would last about 5 days! Now, it's draining within 12-16 hours. And it will suddenly go down to 1%, then I do a soft or hard restart and it jumps up to 88% (on low power), and then I can literally watch it go down in 1-2% increments every few seconds. I have nothing running the background etc. Upgrading to 15.7.3 didn't help.
My iPhone 7 battery has been at 80% since I bought it (second-hand). It was never a problem before this update. And my battery health stats say "Your battery is currently supporting normal peak performance" — although, it's not behaving like that. That said, now a few weeks since updating the IOS, the battery is starting to last a little longer; nowhere near as long as before the update, but much better than immediately after updating. So, I'm not overly convinced it's a battery issue, per se.
Did iOS 15.7.3 fix any battery issue(s)?
