A number of posts have surfaced today on Apple’s discussion website in reference to a problem that is annoying users of the iPhone XS and XS Max. After either model is inactive for a period of ten seconds or more, the screen animation stutters when users scroll, or swipe up on the display to close an app. Unfortunately, this problem isn’t new, since some posts are dated from October, and there’s even a Facebook account dedicated to the issue.
Apple seems to be pretty aware of the situation since some users reported that they’ve already got replacement units for the XS and XS Max models under the terms of the warranty. However, to their very surprise, the new problem also affected the new units. Of course, due to the fact that this isn’t a hardware issue, but something in the software is causing the stuttering. One community user member claims to have received two replacement units and both of them suffered from the same issue. Interesting enough, this issue never happened in an iPhone XR unity or in 2017’s iPhone X.
Despite the fact that the reason for this issue is yet to be explained by users, some users believe that this is being caused by A12 Bionic Deep Sleep mode. The chipset powers down during the period when the phone is inactive and it fails to pick up the user’s initial touch input. Apparently, an Apple employee reportedly told one iPhone user that the phones weren’t properly calibrated.
A video was recorded by an iPhone XS user showing that the animation drops some frames when the calendar app is closing, shrinking in size before it retreats back in the app icon size. While this seems to be a minor issue and probably won’t be noticed at first for some users, a large part of owners is reporting that this issue becomes really annoying with the time. Furthermore, it’s hard to digest this kind of laggy behavior in smartphones that are so expensive.
Apple is investigating the issue and a fix for this may come in a future iOS update.