"There's a high chance." https://grapheneos.social/@GrapheneOS/117299954135808210
In other posts they've said they will be sold with GrapheneOS out of the box.
Sorry, but no.
I also have an iPhone for $REASONS. Both my prior iPhone Air and my new iPhone 18 Pro still frequently stutters. Even scrolling some settings screens (which are very simple), I can often see frames getting dropped. Apple apps like the App Store are one huge frame-dropfest (even if you let it preload all assets). Apple can't get a nearly 1500 Euro phone with the fastest single-core performance and probably the fastest GPU to render normal window chrome smoothly anymore.
My P10P with GrapheneOS, which only has a midrange SoC by modern standards (don't believe what Google tells you) and it is buttery smooth.
iOS got even more terrible with Liquid Glass, so many things are badly readable, even with the slider set to completely opaque in iOS 27.
iOS used to be premium compared to Android. But Apple enshittified iOS over the last few years. Even most Apple pundits agree.
Since people seem to disagree because they simply cannot see it, here are two recordings at 0.5x speed so that even people who are not sensitive to stutters can see it:
Even AOSP is head-and-shoulders better than iOS.