This has just started happening to me. Before I could I could change/choose a different ringtone for contacts. Now when I try to change ANY ringtone it asked for me to choose where I'd be getting them from. By accident I choose 'picker'. Now I have no choice. In the files available in picker there is obviously not the list for all the ringtones that came with my phone. There is just files I have on my phone. I don't want them as ringtones. I don't want to reset as I see for others is still didn't work, but also it still will not allow me to choose from the original ringtones that were in my phone.
Another problem: I had my ringtone set to 'silent'. When a call comes in I don't hear it. That was to ignore all the spam/scam callers. I would choose a ringtone for my contacts. I just added a contact and now can't give them a ringtone.
This is a problem. I can't figure out how to overcome it or override any choices my phone now gives me, so I'm at the mercy of my phone. If I get another one it won't be samsung. This is not right