I will connect the iPhone to the computer (macOS Catalina) and allow access. I don't see the option of bakcup and many other information in the Finder. I only have two functions – "Check for updates" and "Restore iPhone".
MacBook Pro 13″, macOS 10.15
Check for updates and apply those on your Mac—your iPhone, too, but that seems to already be running the current iOS 13.5.1—disconnect the USB-to-Lightning cable, reboot both the Mac and the iPhone, and try again. Failing that, try a different cable. If you’re using a hub, disconnect that and connect directly to the Mac. Then check with the folks at Apple.
If your computer doesn't recognize your iPhone, iPad, or iPod - Apple Support
Check for updates and apply those on your Mac—your iPhone, too, but that seems to already be running the current iOS 13.5.1—disconnect the USB-to-Lightning cable, reboot both the Mac and the iPhone, and try again. Failing that, try a different cable. If you’re using a hub, disconnect that and connect directly to the Mac. Then check with the folks at Apple.
If your computer doesn't recognize your iPhone, iPad, or iPod - Apple Support
Try connecting with the Mac booted into Safe Mode.
If Safe Mode works... Any add-on anti-malware, add-on anti-virus apps, add-on VPN clients, add-on cleaning apps, or similar? If so, remove those per the vendors’ instructions, reboot, and try again.
If you’ve restarted both macOS and iOS, tried a different cable, patched to current, no add-on apps, etc., time to discuss this with Apple.
I tried everything. I use the original cable from the iPhone 11 Pro and also tried connecting Apple TV's cable (but here with the adapter, I only have USB Type C on the MacBook).
In Safe Mode, I can't see the iPhone in the Finder.
Thank you for your help.
I will have to contact Apple.
Thanks for the answer. I have the latest versions of macOS and iOS. Restarting did not help.
I can't backup iPhone on macOS Catalina
