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Like its predecessors, the N900 has a slide-out Qwerty keyboard.
The device comes with the Nokia Messaging service, which can support up to 10 email accounts, as well as an instant-messaging application.
The N900's browser is based on Mozilla technology. Nokia would not confirm the browser's precise name, although Mozilla has previously code-named its mobile browser project Fennec, and said the resulting application would simply be called Firefox, as on the desktop.
Full Adobe Flash 9.4 support is included, as is support for HTML 5 features.