I personally dislike the Andriod OS. The amount of things that are running the background, and applications that trace your location are ridiculous . It's not needed. Personally I'm an iOS person. Sleek and the transitions between apps are amazing. You rarely see an app crash within iOS and it doesn't have that horrible second lag when scrolling through your apps.
But I'm not slating it to an extent, It is amazing for Object orientated programming learning and teaching Java. But personally it's not my field.