Problem: iphone 13 connected by USB cable to PC, installs device driver on PC, iphone prompts for Trust and Passcode, Portable Device MTP Folder does not show up.
Issue: iTunes installed and installs iTunes Mobile USB device driver under Device Manager - Universal Serial Bus controllers, does not support MTP Folder file transfers
Solution: Use Device Manager - Right Click Computer - Manage - Device Manager - [Select iphone Mobile Device Driver, and right click Update from Local Machine] - install the MTP USB device driver instead
Then unplug and replug, will autodetect that an MTP Portable device has been attached, prompt for Trust and Passcode on the Phone, Winodws Folder will have - Apple iPhone tablet/media player icon for the phone
Drill down - Internal Storage - DCIM