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“But first. what is an OLED screen? and what’s so different about it? Well, I had to put my geeky glasses on and start the hard process of researching (i.e searching for OLED in Wikipedia), in a non-confusing non-scientific vocabulary, organic light-emitting diode (OLED) are screens that depends on very minute diodes that light up forming what we see, thus it doesn’t need backlight and this reduces the power consumption dramatically, while the traditional Liquid Crystal displays is made of pixels that require backlight, so the battery charges is drained faster, But that’s not it’s only pro, it’s also known for forming more realistic more lively photos that looks more real than the ones showed on LCDs and last but not least the Cost of production of OLED screens is much less than that of LCDs, cool, huh?!” source...