Battery drain since iOS 15.6 is ridiculous

feliperj wrote: "iPhone 6s+ (...) Battery health 92%."

92% implies the battery has been replaced. Was it replaced by a qualified technician using a genuine iPhone battery?...

About genuine iPhone batteries

Repair Provider Verification - Official Apple Support

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I had the battery drain issue as soon as I updated to IOS 15.5 with all of mine and my families devices. But reading this I find it interesting that after the 15.6 update the phone battery is back to normal and working great as well as all other devices except my watch. It worked 1 or 2 days great then now it dies mid day (better than 2-3 hours with the 15.5 update). Wondering if it’s regional some how, as here in Sweden myself, my family and friends battery life issue has been resolved in our phones and iPads but so many others are complaining through out the iso 15 updates at different stages. Interesting….

No, it has never been replaced, it is original, I am a very very very light user.

As I told before, battery was ok until I installed first version iOS 15.

Then, IMMEDIATELY, my battery lasted 1/2 or 1/3 of what it did with last version if iOS 14.

Too sad see battery charge dropping 30% in one day with 10 min of whatsapp and 10 min of a bank app.

Again, it was ok with ios 14, then it has been terrible since first version of ios 15.

hank2552 wrote:

I am wondering if Apple engineers testing IOS 15 on older devices, not only focus on the latest and the greatest

Apple’s internal alpha testers test every version on every device that it runs on. In addition, there are over a million beta testers who test new releases for months, and they are distributed among all hardware versions. And you will notice that most of the reports in this thread are from users who are using the “latest and greatest”, so your hypothesis is fatally flawed.

feliperj wrote: "No, it has never been replaced, it is original, I am a very very very light user. (...) it was ok with ios 14, then it has been terrible since first version of ios 15."

feliperj ~ Light user or not, the original battery in your iPhone 6s Plus would be long overdue for replacement. The long process of applying a major iOS update to an iPhone 6s Plus with an aging, weak battery can be the proverbial "straw that broke the camel's back." Your old battery wouldn't be the first to fail following a long update. Have the battery replaced and then tell us how great the new battery life is.

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I started to have the battery drain issue a few months back. I can’t recall which update it was. But I’d have to have my phone on the charger for a few hours mid day & then it would be drained again before bed. I did this update last night & this is the first time in months, I didn’t have to charge my phone all day. It’s almost 11 PM here & I’m still at 43% battery. Im not sure how to even figure out what caused the fix since others seem to have gone in the opposite direction. Apple needs to fix this across the board because a dead phone or one that has to stay plugged in is pretty useless.

Battery health declines, on average, about 1% a month. However, that decline is not always linear. Sometimes, it will stay the same for a couple of months and then drop by a couple of points. Updating the iOS will also cause the battery health to be recalculated. So, if your phone is more than three months old, there is nothing untoward happening.

KavanitheiPhoneHottie wrote:

It doesn’t make sense. I just got my iPhone 11 and the battery is draining like crazy. If even new phones are doing it then I would definitely bet on it being the update for a lot of people

If you just got your phone, it's most likely still doing some background updates and indexing. You'll need to wait several days before you can get an accurate idea of battery life.

Not so sure you are right here Lawrence. My Wife's Iphone 6s plus has gone from usable to unusable with this update.

I've checked every setting, looked at battery usage that shows the battery going from a night charge 100% to close to 5% in under 2 hours, yet the phone doesn't show any obvious candidate for the drain, safari was the highest on 'battery usage by app' but it had barely been used - this was a period of minimal usage.

Same result after many days of overnight charge (and optimised battery charging is enabled, always has been).

According to the phone's presentation of the data it is 'like' it has evaporated - though I know it's impossible, just something is draining it, but ios 15.6 is not recording or showing what it is.

Never seen anything like it

rwps wrote: "My Wife's Iphone 6s plus (…) doesn't show any obvious candidate for the drain..."

rwps ~ With an older model such as the 6s Plus, an obvious candidate for the drain is a weak, aging battery...

Does the iPhone 6s Plus still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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Hi Alancito

Yes original battery, but the phone was replaced with new under warranty, just before the 2yr warranty expired - so the phone is a couple of years newer. Battery capacity is 81% - it still works very well (except since the update :)

I took screenshot earlier, and you can clearly see the very odd drain around 6am (when my wife got up). And the greatest battery use for the whole last 24 hrs is 25min of safari. This has happened multiple times since the update

the bit that seems to be missing here is that the phone has consistently worked well lasting all day with regular use, only minor degradation of its battery life that was not impacting or being noticed.

Building in obsolesnce via an update seems to be excused by some as acceptable. Our world can't afford so much waste.

Same here on a iPhone 11 Pro. Is there hope this will resolve with newer updates or is the battery damage permanent…?

2 iPads (one brand new generation 9) pretty much having the same issues. I watch the battery drain before my eyes with light usage 😬🙄

Ye u noticed it too. I only bought my ip13 lat feb .and 100 % til this june. July 98% and aftr updating it to 15.6 it drains too fast Frm 98 to 94! For just a month ! It drops for about 5-6 days aprt! Really wnted to cry! Idont know if ill be updating to ios 15.6.1 cos it doenst fix the issue.. and i read and wtch that ios 16 also has batt issue. Maybe my batt will end up 70 or les by sept .. wat shoud i do!! Im thinkng not to use it until apple fix ths issue

The thing that impressed me most about my iPhone was the battery life. IOS 15.6 has destroyed that perk. Battery now completely drains several times each day, and charging takes forever, even with my quick charge device. FIX THIS PLEASE, or I’ll switch to a different phone. Google Pixel is looking better and better.