iOS 15 and Battery

Black_Knight121 wrote: "...iPhone 6 (...) after charging it goes from 100% to 10% and turns off!!!"!

Does the iPhone 6 still have its original seven year-old battery? If so, what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

...And is there an "Important Battery Message" there? [Ref: Apple]

Note that the long process of applying an iOS update can be "the straw that broke the camel's back" for a weak, aging battery.

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Black_Knight121 wrote: "it was the first thing i checked, my se is at 85% and the 6 is at 90%"

An iPhone 6 at 90% battery capacity implies it's not the original battery. If so, was the battery replaced by certified technicians who use genuine Apple batteries?...

About genuine iPhone batteries

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ramish32 wrote: "...then i update 15.1..."

ramish ~ What version do you have now?...

Settings > General > About > Software Version

...If still 15.1, see if updating to the latest version (15.2) helps.

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I have an iphone SE 1st Gen. I recently updated to 15.0.2. and following day to 15.1 Battery is decreasing 1-2 percent per minute when 4G was enabled and a little slower when not. I restarted, reset network settings with no result, and still battery drains fast. I am obliged to have data off during the day and turn it on ad hoc. Battery is also getting hot some times. I cannot accept that reindexing needs so many days to finish. I think this is a software issue, I hope that it will be fixed. I also have an apple watch which I wanted to update to WatchOS 8 which is not possible with ios 14 so I had no other option than updating iphone. An ipad Air 2 also seems to have the same issue after updating to iOS 15 even though not so obvious as it has only WiFi and a much bigger battery.

I too have an iPhone SE 1st Gen (which I bought new 3 years ago) with iOS 15 and the same battery drain issue. I’ve reset and restored the phone but it’s unusable unless I set low power mode and don’t use it except in an emergency. There seem to be problems with battery on iPhone 13 too so upgrading doesn’t seem to be an option and I’m reluctant to spend a lot on features I don’t need. If it wasn’t for the fact I have an Apple Watch I would move to Android. My partner has a Samsung phone, same age, but battery is fine, and her phone cost £179.

Restoring my iphone was my last option but it seems it will not help based on your trial. I am actually αλσο stuck as I cannot longer go back to ios 14 neither can I buy a new phone. However if the issue exists in late devices there is a slight hope that it will be fixed. I hope it will. I am not so fond of Android to change.

it has been over a week now, both my wife's iPhone 6 and my iPhone se. it is definitely a bug in Apple's latest update.

we have done all that apple recommends, after charging every time we up plug or turn on the phones after charging it goes from 100% to 10% and turns off!!!

Apple please do something. IOS 15 just doesn't work!

I had this problem develop on my 12 mini over the last few months I had it - had to charge twice a day, after not having any issues for the first few months I had it. Got a 13 mini, and everything was fine for a while, but suddenly a few days ago battery drain jumped massively - I had been getting to the end of the day with about 50% battery life, but now I'm in the red before the end of the day, so close to 2x the drain as previously.

I've checked the Battery section of Settings, and whenever I'm not doing anything with my phone, the App Store is responsible for 75-92% of my battery use, often showing over 30 minutes of background activity in an hour with no screen-on activity at all. I've turned off all background updating for the App Store and the Watch App Store, but it has made very little difference. Because it's a system app, I can't completely turn off background updating for the App Store, so there's nothing else I can think to do.

Is anybody else seeing this pattern?

My daughter has just ditched her X for my old XS Max the battery health had dipped below 70%.

I wouldn't expect a 6, which would have a few years head start on it, to still have a useable battery after that length of time.

I'd also have considered the value of putting a new OS on such an old piece of kit- just because you can doesn't mean you should.

I have a se. they are only 2-3 years old. if that is the attitude then frankly I'm switching to android.

besides after a few soft resets, it seems to have themselves out.

Still, the ios is still frankly no good for any phones presently on the market. except possibly the new one.

When you upgrade to a new iOS a large number of apps will also update. This happens over a few days, but will use more battery power while it does it.

Give it a few days while it is completing the install process. It will be using more battery following the install...

Last week I downloaded IOS15 onto my iPhone XR. It has completely killed my battery, which now runs down in just a few hours. It's been several days. Is there a fix or can I uninstall?

Never had this issue with any previous updates. It's been 5 days. Very concerning.