4. 2K resolution and above

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

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