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

Nov 19, 2025 5:13 AM in response to ajfz63

SAME


Apple Intelligence definitely is not ready to be released not to mention the fact that it’s a massive Battery hog Even with the battery having its own processor now… I turned off AI and the three reduce motion settings there’s Quite a few settings very deep that Will not auto populate when you search. Drill down on everything in accessibilities and turn off live listen that’s in At least three different settings. Other than me being in the middle of Of the US Cellular/Tmobile Tower issue that’s got me stuck on a US cellular tower that’s too busy; I can barely get a webpage to Load, horrible phone quality because the lines are so busy and the signal is weak where I live, And the phone is constantly trying to connect to a 5G tower so I’ve override that as well and locked into LTE as a work around everything else is working great after changing all the settings and Disabling AI. I also turned on reduce white point and move the slider all the way to the left, turned on true tone and moved it left of center, turrned cursor to large and not blinking. Apple copy paste their field test results into my account per my request after troubleshooting with them and they confirmed exactly what I already knew about the tower issue even though I was showing four bars 5G plus getting 148 MB on the download speed… Still horrible connection on the phone major interference drop calls And excessive lagging while loading a webpage.


Good luck

Nov 25, 2025 10:38 AM in response to haadee

iPhone 14Pro here on iOS 26.1, 256GB.

Go to Settings > Search.

Turn off “Help Apple improve search”.


It changed a lot for me, phone is usable again. I guess it must have been setting up some encrypted connection with Apple servers every time search was available (any browser address input, in many apps etc). Before the change I practically couldn’t use safari. Now it’s smooth.

Slow performance and lag after iOS 26 update on iPhone

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.