And why did you choose that one.

iOS because it's the king of JRPGs






Joke, I still have a non-smart cell phone

Android here.

It has many features not present in any other mainstream OS. Like freedom of tweaking visuals and countless emulators. Plus, it downloads torrents.

iOS because I really love my iPhone, especially the one I currently own.

I have a Windows Phone. I went with it because I was sick of my iPhone, and I already had an android tablet. Figured I'd try something new.

That can either be awesome or terrible. I've seen friends getting frustrated over android tablets, because they suck in general. Only Nexus and samsung owners seem to be pleased with smooth usage.

Always Android! :3

It worked fine for the most part. I mostly use it for reading nowadays. 

Windows Phone and i like it (Live Titles)

I have a google-account since ever and used a lot of services from them before so the obvious choice was and is android (4.4 currently on n4 and n7).
Apple was *never* a choice to me. I always disliked their products (I *hate* OSX) and they sell their hardware way too expensive.
MS was late to the smartphone-market with wimo and now I am too used to android to switch.