How so?

Touchscreens? First phone with touchscreen was launched in 1993.
Capacitive touchscreen? Invented in 60s.
Gesture based controls? Introduced in 2004 and not by Apple.
Multitouch? Introduced by FingerWorks (later aquired by Apple).
App store? Even Nokia had those before Apple.

Basically iPhone was just successful implementation of existing ideas. It's called revolutionary only because of successful implementation and impact resulted because of it.