5. Sony Xperia Z5 Premium: The very first 4K display smartphone in the world

Of course, we cannot forget the world’s first 4K display smartphone Sony Xperia Z5 Premium. No doubt its name will still be mentioned for many times this year. Apart from the 4K screen measuring 5.5 inches, Sony Xperia Z5 Premium specs also contain a Snapdragon 810 chip, Android 5.1.1 Lollipop OS, (upgradable to Marshmallow), 32GB ROM (expandable up to 200GB), and 3GB RAM. Under the hood, there are a combo of 23MP/5.1MP shooter combo, High-Res audio tech, and a 3,430mAh cell with Quick Charge 2.0 on aboard to run the device.

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