Claim: The IPhone 4 has only a simple mobile operating system.
Evidence: The iPhone 4 introduced a new hardware design to the iPhone family , which Apple 's CEO Steve Jobs touted as the thinnest smartphone in the world at the time ; it consisted of an uninsulated stainless steel frame which doubles as an antenna , with internal components situated between chemically strengthened aluminosilicate glass.
A smartphone is a mobile personal computer with an advanced mobile operating system with features useful for mobile or handheld use.