Like others here, I had MADE custom tones ... many of them, and assigned them to contacts. Now, my iPhone 13 Pro Max where I had them STILL has them, but I cannot get them off of there onto my new iPhone 15 Pro Max. Even plugged into a PC or MAC and using iTunes (or, on the Mac, the new OS), those tones do NOT show up anywhere to be backed up/copied/etc. INCREDIBLY ANNOYING. [I can see my list of custom tones when I edit a contact that HAS a custom tone. I can't see them when in the settings for 'sounds and haptics' though.]
I wonder if I do a full backup and restore phone-to-phone, might that work? This is really aggravating. And is it even officially noted anywhere they screwed everybody with this change?
!!! WORKING SOLUTION !!!
!!! WORKING SOLUTION !!!
!!! WORKING SOLUTION !!!
I downloaded the PC program iMazing (trial version) and connected my older iPhone 13 Pro Max.
This let me see all RINGTONES on my older phone and copy them to my pc.
That said, I only had to connect my newer phone (15 PM) to the PC and it 'unlocked' all the custom tones -- ie they showed up again without me doing anything more.
To test the app further, I copied the custom tones from my PC to yet another phone of mine (one that never had the tones on it) and they copied easily AND showed up as contact available ringtones.
This was all done with ios 17.1.1