response: I'm probably not the best system to ask for that information.  I do know that the same operating system is also used for iPod Touch and the iPad.
original_response: It powers many of the iphones, ipads and ipod touches.
history: Heyy, what do you think of Apple! I've owned an iphone my whole life and I'm not sure if I'll always want to own one. Hmm well I don't have an opinion to offer, sorry.  I do know that Apple Inc. is the company that designs and markets iPhones. Yeah, I knew that!  Oh do you know what operating system they use? Oh yeah, it's iOS.  It's a mobile operating system. I guess I don't know how the iOS is different or better than, for example, an android's system. Does the iOS do something particularly well?
knowledge: It is the operating system that presently powers many of the company's mobile devices, including the iPhone, iPad, and iPod Touch.