Ios Update Stuck On Preparing. Go to Settings > General > [Device name] Storage. Find the update in the list of apps.
Tap the update, then tap Delete Update. Server issues: One of the main causes of this problem is the failure of the Apple Servers, which stores and provides the iOS update for all iOS devices. Go to Settings > General > [Device name] Storage.
Delete Previous Update File One of the reasons why your iPhone is stuck on preparing an update screen is that the downloaded update is corrupted.
Find the update in the list of apps.
Bug in the existing iOS version that causes the file to crash while updating/preparing. Go to Settings > General > Software Update and download the latest iOS update. Download the iOS firmware by clicking on the Download button.