I am surprised I could not find this problem listed. Anyway, I am unable to change any ringtones on my Galaxy S7. I know how it is supposed to be done, but it no longer works. When I go to Settings>Sounds and Vibration>Ringtone, I should get the list of ringtones to select. Instead I get File Manager. The same thing happens if I open Messages and select More> Settings>Notifications>Notification sound. I chatted with Verizon Support and their response was (of course) "Reset to Factory Settings" Is there no other solution? BTW I am running Android 6.0.1 with all the latest Verizon updates.