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.
Dots per inch (dpi) is a measure of a display's pixel density, and is defined as the number of individual pixels that can be found in a 1-inch line. Apple defines smartphone-based Retina displays as having a 300dpi or greater rating. The company claims that tablets can make due with less densely packed pixels and still earn a Retina badge since tablets are held further from the user's eyes.
Also known as: "dots per inch"
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