I have a galaxy s5 and I downloaded mp3 s and they worked fine and then I transfered them to a new memory card on my phone and still worked but the next day none of the files will play. I have tried a different music player app from the play store but still won't play. Any ideas how I can get them to work?
Read more: https://samsungus.org/qa/s5/can-t-play-music-on-phone-message-coming-up-saying.html