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giacomob11_00
User level: Level 1 (4 points)

iPhone 17 ProMotion display not consistently showing 120Hz

Hello, I got an iPhone 17 since april and I noticed that it doesn't go correctly on 120hz on the home screen for example when I swipe through the different pages or when I open an app and the animation is not fluid like a 120hz animation. I waited until the iOS 27 update but the situation didn't change. I only can see correctly the 120hz when I scroll on Safari because I've not flagged the "prefer page rendering updates near 60 fps" option and on Telegram, which seems optimized well. I tried all of the things that can be found online to solve this problem but the situation is always the same. On the other hand, my girlfriend has the same phone with the same software, same liquid glass style but her phone looks way more fluid than mine. Is it possible that my iPhone has got a bad management of the ProMotion? Should I send my phone to technical support?

Posted on Oct 3, 2026 4:20 AM

4 replies

Jeff Donald
User level: Level 9 (64,078 points)

Oct 3, 2026 4:25 AM in response to giacomob11_00

Please have Apple perform diagnostics on your iPhone. It can be done in person at an Apple Retail Store or at an Apple Authorized Service Provider. You can also contact Apple Support and request remote diagnostics.


If you’re in the US, please call  1-800-MY-APPLE, or outside the US, consult the support articles below. In Canada, call 1-800-263-3394.


Contact Apple for support and service - Apple Support


Genius Bar Reservation and Apple Support Options - Apple

Jeff Donald
User level: Level 9 (64,078 points)

Oct 3, 2026 4:35 AM in response to giacomob11_00

You’re welcome. Were the diagnostics done remotely or in person? In person is more complete and may detect anomalies not detected remotely. Your next step is to backup your device, erase to factory settings and restore your data.

giacomob11_00 Author
User level: Level 1 (4 points)

Oct 3, 2026 4:30 AM in response to Jeff Donald

Hello, thanks for the reply, I've already done a diagnostics with Apple Support but they didn't found anything.

giacomob11_00 Author
User level: Level 1 (4 points)

Oct 3, 2026 4:43 AM in response to Jeff Donald

The diagnostics have been done remotely, at this point I think I have to go in person. I also tried to reinitialize my phone but nothing happened.

Originally posted at discussions.apple.com/thread/256369575