iphone se 2016 after upgrading to 15.3.1, the battery quickly sits down. the battery didn't change. residue 87%. 14 firmware did not have such a problem. updated over cable via iTunes. fix this in new versions. because it is very noticeable!!
iPhone SE
evgeny81 wrote: "...residue 87%..."
evgeny ~ What do you mean by "residue"?
With an older iPhone model such as the iPhone SE 2016, it's worth checking the battery. If it's still the original 5½ year-old battery, the long process of applying an iOS update can strain a weak, aging battery and be the proverbial "straw that broke the camel's back". What's the Maximum Capacity % here?...
Settings > Battery > Battery Health
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evgeny81 wrote: "...residue 87%..."
evgeny ~ What do you mean by "residue"?
With an older iPhone model such as the iPhone SE 2016, it's worth checking the battery. If it's still the original 5½ year-old battery, the long process of applying an iOS update can strain a weak, aging battery and be the proverbial "straw that broke the camel's back". What's the Maximum Capacity % here?...
Settings > Battery > Battery Health
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Although 87% capacity isn't bad, a 5½ year-old battery is inevitably weak due to age & use – likely causing the battery to quickly discharge.
We see many similar cases in these communities in which the weak batteries of older model iPhones are exposed following a lengthy iOS update.
You can find out definitively whether yours is yet another such case by having the battery replaced. And then, even if the problem persists, you'll have a strong, new battery ready to work well with the hypothetical new "firmware" when it arrives.
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still nothing worked. went to the service and replaced the battery with a new one. the phone began to work faster and now holds a charge for 3-4 days. the problem appeared immediately after the firmware update, so I thought about the crooked software. but the problem was in the old battery. although the iPhone showed 87% and maximum performance.
reset everything to factory settings. did not restore from a backup. downloaded again from the app store. discharged to zero a couple of times and charged up to 100%. now everything works correctly.
Welcome to the Apple Support Communities.
For info on Battery Health and Battery Life, see these Apple Support articles:
Jack
I already know this. I am 30 years old and not 10. something is wrong with the new firmware and not with my battery. but thanks for answering.
"What's the Maximum Capacity % here?" - iphone writes 87%
evgeny81 wrote: "...the battery didn't change."
Are you saying that it's still the original 5½ year-old battery?
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thanks for answering
the battery quickly sits down after update
