It depends. If you travel frequently, buy a camera. If you don't go out often, buy an MP4 at school (classroom or dormitory). I suggest buying an MP4 to travel. After all, you can rent a camera in a few days. Plus, the pixel of your mobile phone is not low now. It can also be used as a camera for going out to play. You can also watch movies and listen to songs on MP4 during the break ... Thank you.