Android because you have some much flexibility in customizing your user interface and in bringing media of your choice over to your device. You can even create app folders on many Android Launchers, definitely on Nova Launcher but I discovered you can even do it on Samsung Touchwiz. iOS just throws the apps on the screen and looks like the interface of the app drawer on Android devices. Additionally, for your mp3's and mp4's iOS requires you to use iTunes for everything and I don't think you can play your windows media videos such as those you may have made with Windows Live Movie Maker. Next, no iOS devices allow you to put an SD card in to expand your storage, thus if you have a 16 GB iPhone, you have 16 GB period, along with perhaps what you keep in the iCloud, but unless you are on Wi Fi you have to use your precious mobile data to access that. Apple is useful if you have to interact with someone who only knows how to video chat using Facetime and is not able to use Google Hangouts, Duo or other choices.