Can’t Drag a Ringtone to iPhone with iTunes or Music? Here’s the Fix
Some iPhone users may notice that trying to drag a ringtone or text tone to their device through iTunes, Music app, or Finder fails. You connect the iPhone (or iPad) to the Mac or Windows PC, open iTunes, Music, or Finder, select the device as required, but when trying to manually drag and drop a ringtone into iTunes to copy it to the iPhone, nothing happens.
If you encounter this frustrating issue, don’t be alarmed, as there is a way to easily copy ringtones over to iPhone using iTunes, Music, or Finder, it just does not involve drag and drop.