Since buying a brand new iPhone 17 with the iOS 27.1, I have experienced significant, persistent delays when launching almost all applications (both native and third-party). There is a noticeable multi-second stutter and lag before apps open or respond to inputs. The stutter and lag remains persistent while scrolling the apps, switching between the apps nad as mentioned earlier simply opening and closing them as well.
Steps Taken / Troubleshooting Performed:
Forced Restart multiple times.
Factory reset the new iPhone removing old iPhone back up data completely and using the phone without old data for several days.
Followed all troubleshooting steps diligently at the Apple Authorised Service Centers (two different centers) but received incorrect report which did not acknowledge the issue at all
There are no storage bottlenecks.
Waited several days past all the troubleshooting, ruling out temporary background indexing or Spotlight re-building.
The issue persists consistently regardless of whether the apps were recently in memory or freshly launched.
Device Details:
Device: iPhone 17
OS Version: iOS 27.1
Frequency: Consistent / Happens on almost every app launch/closure. in between switching and in-app scrolling.
Please provide a sensible solution or accept my demand for replacement.
[Re-Titled by Moderator]
Original Title: Severe app launch delays, stutters and system sluggishness across all applications on brand new iPhone 17 with the latest iOS 27.1
