BlackBerry took a big leap of faith with its BlackBerry 10 operating system and BlackBerry Z10 smartphone. Unlike previously released BlackBerry phones, the Z10 features no physical keyboard or any physical buttons, setting it apart from other smartphones and all previous BlackBerry devices.
For comparison’s sake, the BlackBerry Z10 is longer, wider and slightly thicker than the iPhone 5 (exact dimensions are 5.12" x 2.58" x 0.35"), but the BlackBerry Z10 is nowhere near as gargantuan as the Android-based smartphones available on the market, including Samsung's best-selling Galaxy Note 2. The BlackBerry Z10 has a brilliant 4.2-inch 1280 x 768 display, which actually has a higher pixel density than the iPhone 5's Retina display, and only weighs 4.78 ounces.
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