Like the Z5 and Z5 Compact, the Premium boasts a new fingerprint sensor built into a redesigned power button on the side of the device. (Sony says this location is marginally more convenient than a sensor at the bottom of the phone and I agree — marginally.) There's a Snapdragon 810 64-bit processor and 3GB of RAM powering the device, and the same 23-megapixel camera that Sony's putting into the Z5 and Z5 Compact. The company claims it has the fastest autofocus on the market — just 0.03 seconds — and is making big promises about solving familiar "pain points" for smartphone cameras, like taking pictures in low light. Judgement on that will have to wait for a full review.
The Z5 Premium's screen, however, is more immediately impressive. The 4K resolution of the 5.5-inch display gives an intimidating pixel density of 806 ppi (the resolution of the 5.5-inch iPhone 6 Plus is 401 ppi), and while it's difficult to say for certain whether it's the best screen we've seen on a smartphone, looking at the preprepared 4K footage Sony included for its demo it would be hard to say it doesn't deserve a place on the podium.
What will 4K do to Sony's promise of up to two days' battery life?
These questions aside, however, it's easy to say that the Premium is beautiful. The chrome, black, and gold variations are all glossy and rich-looking, with a liquid finish to them like newly poured ingots. They're heavy, yes — 180 grams compared to the iPhone 6 Plus' 172 gram weight — but the design quality means they feel reassuringly solid, rather than a burden. That being said, we wonder how it would feel carrying one around in our pockets day after day after day, and this seems like it might be the biggest issue for the Z5 Premium. With its luxurious appearance and vivid screen it looks fantastic on a stand, but the shine might wear off with some day to day use.
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