What's wrong with iPhone unable to check for updates?

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There have been some reports of iPhone users being unable to check for updates recently. This may be due to a number of factors, including:

A problem with Apple’s servers. If Apple’s servers are down, you won’t be able to check for updates. You can check the status of Apple’s servers here: www.apple.com/support/systemstatus/
A problem with your internet connection. If you don’t have a strong internet connection, you may not be able to check for updates. Try connecting to a different network or restarting your router.
A problem with your iPhone. If your iPhone is damaged or has a software bug, it may not be able to check for updates. Try restarting your iPhone or restoring it to factory settings (Note, restore to factory settings will clear all data in your phone).
Not enough storage space on your iPhone. Software updates need to use storage space.

If you are unable to check for updates, you can try the following steps:

Check Apple’s System Status page to see if there are any known issues with their servers.
Restart your iPhone.
Check your iPhone’s network connection. Make sure you are connected to a Wi-Fi network or have a strong cellular signal.
Free up some storage space on your iPhone. You need at least 1GB of free space to download an update.
If you are still unable to check for updates, you can contact Apple Support for assistance.

Here are some additional tips for troubleshooting iPhone software updates:

Make sure your iPhone is running the latest version of iOS. You can check this by going to Settings > General > Software Update.
If you are using a VPN, try disabling it before checking for updates.
If you are using a firewall, make sure it allows connections to Apple’s servers.
If you are still having problems, you can try using a different computer or network to download the update.

What’s wrong with iPhone unable to check for updates?