The iPhone icon appears in the sidebar, but the Finder window is BLANK.

Disconnect the iPhone from your iMac. Shut Down and Restart your iMac.

Then, Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

• Press and quickly release Volume UP button
• Press and quickly release Volume DOWN button
• Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF). 

Now connect the iPhone back to your iMac and check the Finder again.

Axel F.

Be sure to connect your iPhone 11 to your Mac with a cable. Once you see the iPhone 11 in your finder, then click on it. The iPhone information should be populated to the right window.

Axel F.

Glad it has been resolved. You are welcome.

Axel F.