I tried so many USB cables in vain, and then figured out the device was connected but some setting was missing. Android 12 doesn’t have the setting that is referred to of “File Transfer” or “MTP Mode” … the answer is here: https://www.reddit.com/r/Android12/comments/rp62jk/enabling_file_transfer_or_mtp_mode_in_android_12/
- Search for Connected Devices
- Assuming your USB cable is connected choose “Use USB for” as “File Transfer / Android Auto”
Maybe lost an hour trying to figure this one out. Sigh. —JM