Slow performance and lag after iOS 26 update on iPhone

After updating my device to iOS 26, I have been experiencing significant lag across apps and system settings. The performance has dropped noticeably, making the device feel slow and unresponsive. This is affecting the overall user experience, and I would appreciate guidance on whether this is a known issue or if there are recommended steps to resolve it


[Re-Titled by Moderator]

Original Title: After updating to iOS 26, my phone has started lagging significantly across all apps and settings. The overall performance feels noticeably slower—almost like using an Android device


iPhone 11 Pro Max, iOS 26

Posted on Sep 17, 2025 6:11 AM

Reply
Question marked as Top-ranking reply

Posted on Sep 23, 2025 11:29 AM

Jpprado232 wrote:

Nope you are so wrong. It’s the update, as soon as I updated my phone not even a hour ago, I get extreme lag and it doesn’t even run smoothly at all.
AND I HAVE A 15 PRO MAX NOT EVEN 2 years old with extra 350 gigs left

That is exactly what you are supposed to be experiencing after an update of not even an hour ago. Not only lag, but you should be seeing increased battery drain and higher than normal heat being generated from the background indexing being done.

About Apple software updates - Apple Support


You will need to give it 3-5 days to complete. The exact time is not possible to know as it depends on many factors including the size of your photo library where updated algorithms on object detection are also being done. Leave your phone on a charger all night, every night.


238 replies

Oct 14, 2025 7:15 PM in response to haadee

Hello Apple Team,




I recently updated my iPhone to iOS 26, and since the update, I’ve noticed that my battery is draining significantly faster than before. In addition, when using the Facebook app, scrolling through photos has become noticeably slow and laggy.




I’ve tried restarting my phone and closing background apps, but the issue still persists. Please look into this, as it’s affecting my phone’s overall performance and user experience.




Thank you for your attention and continued work on improving iOS.

Oct 14, 2025 7:24 PM in response to bryn203

bryn203 wrote:

Hello Apple Team,
I recently updated my iPhone to iOS 26, and since the update, I’ve noticed that my battery is draining significantly faster than before. In addition, when using the Facebook app, scrolling through photos has become noticeably slow and laggy.

It is always a good idea to read the posts before adding another comment and provide the details from what you have learned in those posts.


This site is a user to user forum, so Apple is not here to read your post. If you would like to address Apple directly, then it would be best to use their feedback link:

Product Feedback - Apple


For any app specific problem, that will have to be addressed by the Developer.

Oct 19, 2025 8:24 AM in response to AdB1973

AdB1973 wrote:

Apple should fix this!

iOS 26.1 is currently in beta and we cannot comment on the issues that have been resolved in that update as it is a violation of the terms for being a beta tester. If you have tried all the recommendations here then waiting for that update may be your only option to compare your results. I assume you have already Factory Reset your device using a computer to reinstall the OS in case of data corruption.


There is no reason for strong language, we are all civilized human beings that are perfectly capable of communicating with each other without any name calling, whether you feel it is appropriate or not.

Oct 22, 2025 1:14 AM in response to haadee

Do they test older devices before releasing an iOS update? How far back do they go? For example, did they test iOS 26 on iPhone 11? Is there any interest on fixing these significant lagging and battery drainage issues? It seems to me that all they need to do is have the option to disable the heavy operating system's demands. I have more than 115 GB free and have tried every possible suggestion I find in here and on the internet, plus I have waited a few weeks, nevertheless nothing has improved for my phone performance. I’m at the point where I really wish I never updated.

Oct 22, 2025 9:42 AM in response to haadee

I have already disabled Apple Intelligence and Transparency and the performance still feels like an Android device. It was super snappy, on the point, every single aspect of the phone was blazingly fast, even on my old iPhone 11 Pro was super fast, now i'm on an iPhone 15 Pro with a very odd and bad performance on the iOS 26 even after more than a month.

Oct 24, 2025 11:22 PM in response to haadee

It’s been a while since the new IOS 26 update rolled out. My iPhone 14 Pro which is on IOS 18 feels wayy smoother than my iPhone 16 pro on the iOS 26. While it has it perks, it’s mostly all downhill since it lags a LOT! It is literally one year old and it lags like crazy. I can’t even roll back to iOS 18. Please fix it ASAP as it is really annoying and frustrating to use specially since the phone is ONLY ONE YEAR OLD

Oct 25, 2025 7:23 PM in response to haadee

It's pretty clear to me that most of us are experiencing unacceptable performance issues, along with significant processing delays, and that we didn't have these issues before updating to iOS 26. I don't know how long it will take Apple to fix these, but one easy and immediate solution they could implement is to allow users to revert to the previous version of iOS. Once they have an acceptable solution, we'll be able to update to the latest version. What do you all think?

Slow performance and lag after iOS 26 update on iPhone

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