A:AnswerThe built in cable is USB C so unless your MP3 player uses that, you will have to use your own cable and plug it in to the USB port. Same goes for your iPhone - you will need to use your own cable plugged in to the USB port rather than the built-in cable of the charger.
A:AnswerNo. This is for USB Type C phones only. However, if you have your USB cable for your Samsung 5, you can plug it into the standard USB port that is included.
