Apple has also promised a bug fix for some Core Animation problems.
What you need to know
- Apple has cleared up some confusion about 120Hz on iPhone 13 Pro.
- The company says developers can take advantage of the feature but they have to opt their app in.
- The company says this is to maintain optimum battery life.
Apple has confirmed that developers can in fact use 120Hz on the iPhone 13 Pro and Pro Max, but that they have to opt their apps in to using the feature.
On Friday, some developers noticed that not all apps were taking advantage of the iPhone 13 Pro's 120Hz refresh rate. The feature would work for scrolling or full-screen transitions, but that all other animations in third-party apps were capped at 60Hz.
Am I correct in seeing that UIView.animateWithDuration APIs aren't clocked at 120Hz on iPhone 13? On UIScrollView, system ones, and Metal by the looks of it, rest is still 60Hz? pic.twitter.com/t3MeM9cj0E
— Christian Selig (@ChristianSelig) September 24, 2021
There was a pretty tricky workaround, but Apple has now confirmed that apps can in fact take advantage of this feature by adding a new plist entry to their app, declaring it uses the higher frame rate. As noted by MacRumors Apple says documentation to explain this will be issued soon, and that the step is required so that only apps that will benefit from the technology will use it, and to lessen the impact on battery life that could be caused if all apps use the feature by default.
The new 120Hz display in the iPhone 13 Pro is one of the biggest new features in Apple's best iPhone this year, offering smoother scrolling, viewing, and usage. It also has a variable refresh rate for battery preservation and a new Super Retina XDR display which is much brighter than the old one.
Apple has also reportedly confirmed that there is a bug affecting some animations using Core Animation and that a fix in iOS 15 is on the way.
iPhone 13 Pro
All-new A15 Bionic processor, new cameras, and more
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