Problem: Add custom ringtone -> no music files. I have transferred .mp3 songs from PC with an usb and I can see it but I can't select it as a ringtone, if I go to settings -> storage -> sounds there's no files but if I go through files -> sounds it's there. Also Google Play Music won't show any songs, I'm only seeing subscribe and learn more buttons. Tried all the simplest ways and nothing worked.