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Although it's the most popular mobile OS, powering some 330 million phones, Symbian has been in limbo lately. On one side, it competed against the increasingly popular (and completely closed) iPhone, while many manufacturers, such as Motorola, opted to use the open source Android, which offers a much more similar experience to iPhone than most Symbian phones.
Lee Williams, executive director of the Symbian Foundation, claims that the new, open Symbian has an advantage over Android. Symbian is fully open, he says, while “about a third of the Android code base is open and nothing more. And what is open is a collection of middleware. Everything else is closed or proprietary.”