nope. the alternative isn't iphone.

there's 2 different alternatives beside windows phone and blackberry os.

one: good old symbian.
two: meego (now rebranded and developed as sailfish os)

don't care ubuntu and firefoxos'es for mobile phones, they're just like android os.

to me, I'm using symbian s60v5 and belle. I'm planning to buy a meego phone probably nokia n9, i'm gonna use it with my good old n8