My iPhone 12 will not connect.

There may be a buried window somewhere asking you if you want to connect the iphone to the computer. That happened to me yesterday. Couldnt figure out why it wouldnt connect and then later when i closed some other windows I saw that the one I needed was behind all the others.

I was so frustrated with this yesterday....I download the newer MaxOS and restarted both phone and iMac. I tried everything for hours! If you have an iMac and this is the first time your connecting to sync, the iPhone shows up in FINDER under Locations. Click the iPhone there and you'll have to trust the device. Then open the phone and you have to trust the computer. Wallaaa...iPhone 12 now in Music (the old iTunes)!