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/cdn.vox-cdn.com/uploads/chorus_asset/file/2686978/xperia_z_zl16_1020.1357593400.jpg "Sony Xperia Z / ZL: hands-on with Sony's flagship smartphone for 2013 - The Verge")
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How to Set Up the Face Unlock Feature Yourself in Sony Xperia Z Ultra « Smartphones :: Gadget Hacks
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Sony XPERIA Z Z1 Z2 Z3 Z5 - Hard Reset, Unlock Password, Screen Lock removal - YouTube
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Xperia Z security flaw allows users to bypass the lockscreen
