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IFA 2015 sees Sony launch the flagship Xperia Z5 family-- the 4K display-equipped Z5 Premium, the Z5 and the Z5 Compact, all featuring the latest Sony cameras and a fingerprint sensor integrated in the power button.
The Z5 Premium is arguably the most intersting of the three, thanks to the 5.5-inch 3840x2160 resolution display. The resolutions on the other models don't go so high, as the Z5 has a 5.2-inch 1080p display while the Z5 Compact has a 4.6-inch 720p screen.
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