Worst battery backup after 26.5.2 update.

Exactly, resetting the phone then reinstalling the backup drags back in all the misbehaving apps. I would add VPNs as 26.5.2 was a security patch

I have a 17 Pro Max battery health is at 100%. After the 26.5.2 update my battery is draining 100 down to 90 in two hours and not even using the phone. I use to be able to go all day and still be 40 or 50% now I have to charge during the day.

Same here with 26.5.2 on iPhone 17 Pro (European regular SIM card small battery model). Have to charge twice daily after the update instead of every other day. Battery usage doesn’t show anything suspicious except once it showed Home app using a lot. Other than that it’s been the apps I’ve actually used but that usage doesn’t explain why the phone would use 3x more battery in the background than before.

I’ve had the same phone for 21 months. It’s been 12 days since I installed the update. The last two days the battery has been so bad I’ve gotten the same “adaptive power” kicking on. My usage is exactly the same as it has been all summer.

And yet, millions of users who have updated are not having problems.

If they were, this site and other support sites would be completely flooded with reports and you would be hearing about this on the evening news.

> You phone should be on the charger all night

I can charge my phone however I want to 🙄

> Background processes are scheduled to run overnight while you are not using your device

I think you're underestimating background processes. By that logic, night-shift workers would never see them 🙃

> Your phone is supposed to charge to 100% periodically to maintain accurate charge estimates.

I positively understand this mechanism. What I'm saying is now it's happening every day or every two days whether it used to happen once a month.

> It is not time for a battery replacement yet, but you are getting close when it will drop below 80% and need replacing. Your phone is expected to last 1000 charge cycles before that happens under normal use. With it being 87%, your capacity is already reduced by that amount and then when you add a Charge Limit of 85%, it will reduce your daily usage even further, so I could see where you are having to charge it during the day.

You're implying that I'm not able to judge if I lose more battery overnight. I've been living with that 87% battery for literal months. It only started being a problem after 26.5.2. I trust my own judgement on those kind of things. Also: tell that to the iPhone Air user who reported similar problems while on 100% battery health.

Barbababar wrote:

> You phone should be on the charger all night

I can charge my phone however I want to 🙄

> Background processes are scheduled to run overnight while you are not using your device

I think you're underestimating background processes. By that logic, night-shift workers would never see them 🙃

> Your phone is supposed to charge to 100% periodically to maintain accurate charge estimates.

I positively understand this mechanism. What I'm saying is now it's happening every day or every two days whether it used to happen once a month.

> It is not time for a battery replacement yet, but you are getting close when it will drop below 80% and need replacing. Your phone is expected to last 1000 charge cycles before that happens under normal use. With it being 87%, your capacity is already reduced by that amount and then when you add a Charge Limit of 85%, it will reduce your daily usage even further, so I could see where you are having to charge it during the day.

You're implying that I'm not able to judge if I lose more battery overnight. I've been living with that 87% battery for literal months. It only started being a problem after 26.5.2. I trust my own judgement on those kind of things. Also: tell that to the iPhone Air user who reported similar problems while on 100% battery health.

Hello~ My iPhone stayed on 95% for a year. Of course I knew that was incorrect because I check it elsewhere. Things happen. I will tell you something that is a hard fact though…you’re being assisted by some of the top volunteers in this entire forum. That in and of itself deserves a thank you and your appreciation at the very least. We all try our best to assist each other here.

~Katana-San~

I'm having the same problem. I have an iPhone 16 pro, capacity is at 99%. It used to last me nearly all day on 80% max charge. Now I'm lucky to get just over 1/2 day. I bumped my max cap from 80 to 85 just so my phone would last. This update is clearly creating issues and so far, nothing from apple. I've been updated since it dropped so I'm well past any of the "takes time to be stable". Not happy with this update. Apple should provide a way to roll back when user's have issues, this is a poor user experience.

Why are you telling other users what you think Apple should do? Apple won't see your post here, if that is what you are thinking. This is a user site. Apple is not here.

If you want to provide feedback to Apple.......

Feedback - iPhoneAppleApple › feedback › iphone

worst update, the previous one before that update was fine . Then when I installed that my Apple Music started to crash, the repeat button is not working and sometimes the volume won't work even the music is playing . Next is the Google Chrome browser or even the Google engine, when I type and I want to edit or delete a single letter the x button won't work, even the microphone or camera . so I had to use the delete on my keyboard, so many issues. sucks, wost in the worst . that was you guys did before. always crashing things

lowela208 wrote:

worst update, the previous one before that update was fine . Then when I installed that my Apple Music started to crash, the repeat button is not working and sometimes the volume won't work even the music is playing . Next is the Google Chrome browser or even the Google engine, when I type and I want to edit or delete a single letter the x button won't work, even the microphone or camera . so I had to use the delete on my keyboard, so many issues. sucks, wost in the worst .

The update is not your problem, you have unique problem with your computer and/or the apps installed on it that are causing a conflict. It is the app developers responsibility to update their apps to the latest OS version for the device supported. It has always been that way and always will be in the future, that is even true for Windows and other platforms.

• For the issue with Chrome, contact Google, that is not an Apple product. You would need to be using Safari if you want to complain to Apple about their web browser.
• For the issue with Apple Music crashing, that is from some third party software you had installed on your computer that is not compatible. We can help identify what that software is and also get more information about the crash, but you would need to post the free EtreCheck report using the Additional Text option when posting. The report contains no personal information.

How to use the Add Text Feature When Post… - Apple Community

• This update was released a month ago, so if the update was the problem on your computer, then you would see thousands of posts stating the same thing in the Mac forum, and that is not the case.
• Don't forget to create a new post in the appropriate Mac forum, as this iPhone forum is not relevant to your issues at all. After posting in the Mac forum, then provide the EtreCheck report and you are likely to find a resolution. When providing details on the issue, don't forget that screenshots are always helpful to visualize what you are seeing as long as they don't include any personal information.

Agree 100%. I'm using an old Iphone 13, and the battery lasts half after the update to Ios 26.5.2

I would want to go back, don't care at all about the improvements if I can't use my phone for 12 hours.

Now it barely last 5 or 6. Nothing different just updated the Ios. And my immediate reaction was to buy a new iphone ... Now I'm not going to settle until I get my iphone to work as good as before the update

And what is the Battery Health percentage on your battery? If it I s below 80%, it is irrelevant which iOS version you are using. I wouldn't recommend to perform any update on a failing battery as a CPU intensive task is going to further weaken it, Failing to service your phone is not the fault of the iOS update in that case. It would be very unusual for an iPhone 13, where the battery was only expected to last for 500 charge cycles, to still be operating efficiently on its original battery.

filippo109 wrote:

Thanks, but I think you missed my point.

My iphone battery life dropped after the software update.

We cannot be forced to reduce the efficiency of our phones, to me this is just wrong.

Cheers

You ignored my advice, why should I worry about your expectations?.

I can confirm that the battery have issues after the latest update too