iPhone 7 14.4 Os update error

Make sure that your iPhone is setup to meet the following requirements before you attempt to update the iOS version-

• Your iPhone must have a fast Wi-Fi connection; you cannot update over cellular data or a cellular hotspot
• The iPhone can not be in Low Power mode
• The battery state of charge must be above 50%
• Your iPhone must have at least 6GB or more free storage space
• Your iPhone cannot be connected through VPN
• If you are not planning for it to update automatically you should turn this option off, as it will only update when the phone is plugged in, connected to Wi-Fi and locked
• You should leave the phone plugged in until it finishes updating, both to assure that it remains above 50% and to keep Wi-Fi enabled (Wi-Fi turns off when the phone sleeps if not connected to power).

Axel F.

Unfortunately you have not followed the above instructions. The very first line is that Your iPhone must have a fast Wi-Fi connection; you cannot update over cellular data or a cellular hotspot.

I can see on your screen shot that your iPhone is connected to a Cellular HotSpot. That will not work. You must be connected to a Wi-Fi Network to download, install and verify the update.

Axel F.

You do not have to remove the SIM card. You just have to use a Wi-Fi Network. Let me know how you make out. It should work fine. You are welcome.

Axel F.