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Our online glossary is here to help you make sense of the terminology used in the cell phone industry. It covers mobile technologies, such as 3G and 4G, and even includes a bit of information on smartphone operating systems and the companies that make the cell phones and other mobile technology devices we all use.

What is "4K"?

4K is a HD resolution standard that delivers quadruple the pixels of 1080p, a horizontal resolution of 4000 pixels. It offers a pixel resolution of 3840 x 2160, which leads it to being referred to simply as 2160p at times. 4K screens may also be named as Ultra HD, but this is a broader term that can also include displays with even greater resolution than 4K. The television market has witnessed the rise of 4K products as prices became affordable, while the Sony Xperia Z5 Premium was the first smartphone to boast 4K resolution.

Also known as: "Quad HD"

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