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

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271 replies

Oct 15, 2025 4:10 AM in response to mjolarkmed62

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Oct 15, 2025 4:37 AM in response to haadee

Further follow up on this issue from my own experience. I ended up returning my iPhone 15 Pro to Apple as I had it less than a month and the MagSafe charging functionality stopped working too as well as all of the issues with lag and unresponsiveness. I have now bought an iPhone 17 and I am not experiencing any issues although I have not yet activated Apple Intelligence.

Oct 18, 2025 10:45 AM in response to haadee

Just an update to the iOS 26 update. So it’s been a month now since installing iOS 26 and compared to iOS 18 and all previous iOS versions this one is the worst. I can’t see anything it did to make my iPhone better. The lagging is still there. The battery still drains quickly and overheats. I’ve read through this whole forum several times and waited weeks for all the indexing to complete, I turned off Apple Intelligence, I turned off the reduce transparency display, I added the iOS 26.0.1 patch, I never dropped my phone, didn’t jailbreak it, bought it brand new from the actual apple store paid in full in person, always used a protective case, updated all the apps that I could and yet the problems and glitches and lag persists. Even going to the App Store or using Apple Maps or the weather app or the clock app all original apps nothing 3rd party outsourced doesnt work properly. Nothing works like it did with iOS 18. That worked perfectly. I have full bars reception data 5G there works. And now my phone is slow, glitchy and it’s not an upgrade. iOS 26 was a major downgrade. Probably should have waited to install after 26.2 or 26.3 was released. It shouldn’t take 4 weeks after installation to have it running smoothly. But I’m not a software engineer or developer so all I can compare it to is the 14 years of continuous use of other iPhones models and iOS versions. It’s hard to say it was working perfectly before the update and is now not working good after the update. And reading through all the comments and troubleshooting is like okay I did this and I did that and I am still experiencing lag and glitches so now what. Those issues weren’t there before. I guess it’s my fault for installing iOS 26. Maybe they should have just gone incremental improvements like from 18 to 19 to 20 instead of trying to leap ahead to 26.

Oct 19, 2025 12:47 AM in response to haadee

Yes. I’m not getting all my calls or voicemails. My daughter called about 5 times. So she had to call me on Facebook Messenger. My focus will just come on and it wouldn’t let me turn it off. My hotpot just turns on.I went to settings to make sure it was off and it was. Couple hours later it just pop back on.

I’m having so my issues with this new Update 26.0.1

I also been asking a lot of other people with it. Some has and some hasn’t no issues with the new update.

Oct 25, 2025 6:57 PM in response to haadee

i installed ios 26 on my iphone 16. my phone has had chronic problems lagging since… the same thing happened to my daughters phone. i have run constant tests and diagnostics to improve performance and the issue persists without a valid reason for the performance. my phone was fine before the update the rest of my family who did not update do not have problems. i have found no reasonable solutions to this problem only mediocre responses and am very unhappy with your product.

Nov 19, 2025 11:15 AM in response to 2manmoshpit

2manmoshpit wrote:

I upgraded iPhone 15 pro to iOS 26.1 ten days ago and safari is just DESTROYED. bookmarks and web navigates so slowly, lags exceed 6 to 10 seconds between click and action. I have gigabit fiber and eero 7 500 m WiFi speed so it’s definitely the operating system. Apple please fix ios26.1’s interminable lags.

You are not addressing Apple here. This is a user-to-user forum. Apple is not reading your post.


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Dec 10, 2025 4:48 PM in response to haadee

Me too!!! Since the upgrade my screen has been less responsive and the performance has been very very slow. It took me 2 minutes, for example to click through and create this post. Clicking me too, signing in, and clicking continue. In a high wifi range. It’s just general responsiveness and the phone heats up and uses up battery faster. I thought updates were supposed to improve performance not degrade it. I have an iPhone 14 pro. Doesn’t feel old enough to perform so poorly.

Slow performance and lag after iOS 26 update on iPhone

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