Unable to synchronize iPhone with MacBook Pro

See if these help;

Sync your iPhone, iPad, or iPod using your computer - Apple Support

iOS update and restore errors - Apple Support

If your device doesn’t appear in the sidebar when connected to Mac - Apple Support

Claude Crider wrote:

I am running iOS 15.5 on an iPhone SE with 209.6 GB available.

I am trying to synch this phone (calendars, contacts, backup iPhone, etc.) to my MacBook Pro (16-inch, 2019) running macOS Monterey version 12.4 with the USB cable. This laptop has four Thunderbolt 3 (USB-C) ports.

I’m using a standard cable to connect from the iPhone Lightning connector to the converter to Thunderbolt, to the laptop.

I have synched up numerous times before via the Finder window on the laptop, using this configuration, with no problems. (My understanding is that we don’t use iTunes to sync anymore.)

However now when I open the phone and the laptop and plug them in, the iPhone shows up on the laptop in the Finder window left hand menu under Locations. When I highlight iPhone, instead of showing all of the synch options in the large part of the Finder window, what I see is “Loading…” and a spinning clock for several minutes, followed finally by the message: ”The selected device could not be found.”

I get this result consistently regardless of which of the four Thunderbolt 3 ports I use. Any advice would be greatly appreciated!

Hmmm. Have you tried rebooting the computer.

Do you sync through iCloud as well...same Apple ID on both.

You can run a diagnostic on the iphone—How to put your iPhone in diagnostics mode - Apple Support

Glad I could be assistance :)