Having a 4K smartphone may sound cool but can you actually tell the difference between a 4K smartphone display and a quad HD display? Mashable’s Ray Wong recently got to take a look at Sony’s new 4K smartphone and he honestly couldn’t tell the difference between a regular old high-definition phone and a 4K phone.

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The story behind this is a little complicated: Wong and other reporters were given some hands-on time with a new Sony device that they believed to be a 4K phone but that was really just a phone with a 1080p display. Sony was displaying the actual 4K phone at its event in a separate exhibit, but it wasn’t letting any reporters touch them. Instead, they could just look at it from a safe distance to get a sense of how much “better” it was compared to the regular display.

“I love high-resolution screens as much as the next nerd, but we all know that most people can’t tell the difference between a 1080p display and a QuadHD display when holding their phones out at 10-12 inches (a length considered to be normal) from their face,” Wong writes. “And now Sony’s expecting people to be able to discern the difference between its even more pixel-dense 4K smartphone display and “conventional” phone displays, which I guess is what we’re calling full HD and Quad HD?”

While it sounds like 4K displays are indeed a pointless gimmick for smartphones, this still isn’t the most gimmicky product Sony has unveiled this year. No, that award goes to Sony’s memory card that costs $155 and offers “premium sound” for audiophiles. We wish we were kidding.

Prior to joining BGR as News Editor, Brad Reed spent five years covering the wireless industry for Network World. His first smartphone was a BlackBerry but he has since become a loyal Android user.