My iPhone Won’t Update! Here’s The Real Fix. 

If your iPhone doesn’t update, there are several possible reasons and solutions to the problem, including:

Restart your iOS device: Restart your iPhone to resolve update problems: Wait 30 to 60 seconds, then push and hold the power button until you see the Apple logo.

Ensure that your iPhone is connected to the internet: To obtain new iOS updates, your iPhone requires an internet connection, and some updates require a Wi-Fi connection. Check if Wi-Fi is enabled and connected to a network by opening Settings and tapping Wi-Fi.

Ensure you have sufficient free space: iOS updates require 750-800 megabytes of free space before installation—check your iPhone’s available storage space by navigating to Settings > General > iPhone Storage.

See if the update has already been downloaded: Sometimes, a problem with the downloaded iOS update file will keep you from running it on your iPhone. Go to Settings > General > iPhone Storage and scroll down to check if the update has been downloaded. If it has, tap on it, then tap Delete Update.

Use your computer or the Settings app to update your iPhone: There are two ways to update an iOS device: using your computer (iTunes or Finder) or the Settings app. If one way does not work, try the other.

If you follow these steps, you can fix your iPhone update problem and enjoy the latest features of iOS.