Ask for fun: Galaxy S20 Ultra 6.9-inch screen, Nexus 7 7-inch screen, which means the two screens are the same size?

After Apple unveiled the iPad, one of the first steps for Android manufacturers was to unveil the cheap tablet screen. From Amazon Fire to Nexus 7, the 7-inch size became an icon in the Android tablet space in the first half of the 2010s.

But as smartphones increasingly “swell”, the status of the tablet is gradually disappearing. Recently, Samsung unveiled the Galaxy S20 Ultra, which measures up to 6.9 inches. Will that number bring the S20 Ultra into the same territory as the Nexus 7, and will 6.9-inch smartphones threaten Apple’s 7.9-inch iPad Mini?

The answer may surprise you.

At 6.9 inches, the Galaxy S20 Ultra is the non-folding smartphone with the largest screen available today.

First, note that the manufacturer only announced the diagonal size, not the actual display area. Based on the Pythagoras formula we learned in middle school, where cd is length, cr is width and dc is diagonal size:

cd ^ 2 + cr ^ 2 = dc ^ 2

The length and width of a screen can be calculated based on the aspect ratio. With the Galaxy S20 Ultra, this number is 20: 9, so:

cd ^ 2 + (cd * 9/20) ^ 2 = (6.9) ^ 2

Or:

cd ^ 2 = 47.61 / (481/400)

Continuing this calculation, you will calculate the screen length of the Galaxy S20 Ultra will be 6.3 inches. The screen size of such a Galaxy S20 Ultra will be around 6.3in x 2.83in (rounded).

Has the S20 Ultra display area reached the level of “small” tablets?

Using the same formula above, the actual size of the Nexus 7 screen is 5.94in x 3.71in (note that this tablet uses 16:10 aspect ratio).

Given the two display areas divided, you will see that the screen of Nexus 7 is 23% larger than the Galaxy S20 Ultra screen, even though the diagonal is only 0.1 inch apart.

You may have realized that a more “square” screen would result in a larger display area on the same diagonal indicator. The actual size of the iPad Mini screen is 6.3in x 4.74 inches . The display area of ​​the 7.9-inch iPad Mini is 67% larger than the Galaxy S20 Ultra, although the diagonal is only an inch more.

Not really beating the tablet in size but the S20 Ultra still deserves a screen masterpiece from Samsung.

Thus, in the end, the display area of ​​the tablet is still much larger than a smartphone, even though today’s phones have approached the tablet in terms of diagonal length. On the other hand, a manufacturer that is constantly improving screens like Samsung is also commendable: the screen area, this year’s top Galaxy model is one and a half (48%) more than the giant “Galaxy Note”. ” what year. Samsung’s display technology has really come a long way, and users have never enjoyed a large mobile space within a slim body like this year.