4. 4K resolution and above

The next premium feature we want to mention is about resolution. 2K display phone is very impressive and outbreaking, but it is not too necessary. As you know, the density resolution that human eyes can distinguish is about 350 density. Meanwhile, 4K resolution display comes with high density,  about 600-700 density resolution. Especially, 4K screen consumes more power. Therefore, your smartphone will often run out of its battery. In a long time, that is not good for your phone battery.

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