"Unable to Check for Update" or "Unable to Download"

What you see

• Unable to Check for Update. An error occurred while checking for a software update.
• Unable to Check for Update. Checking for a software update failed because you are not connected to the internet.
• Unable to Download. This update is not available because you are not connected to the internet.
• Unable to Download. This update requires a Wi-Fi network connection to download.

What it means — Apple

What to do — Apple

1. 1 Update your device again using the same network. If you still see an alert, try updating using another network, a Mac, or iTunes.
2. 2 If the issue happens again after trying to update with multiple networks, you can remove the update.

Read the full article for pictures and model-specific details: If your iPhone or iPad won't update ↗