nokia 6.2 running Android 10(stock) I recently bought a 200gb sd card that works great with my phone. I tried recently formating the sd card as internal storage so I can have more room on the phone (wanted to see how much room I could get). I noticed afterwards that none of my mp3s would play. I rebooted the phone, still the same thing. Vlc media player and files by Google say that the mp3s are not playable. If I format the sd card back to external, the mp3s play fine. The mp3s are stored on the built-in memory.