What is the length and width of a cell phone screen with a large 5.5 inch screen in centimeters.

The length of a cell phone screen with a large 5.5-inch screen is 11.07 centimeters and the width is 6.23 centimeters.

A cell phone screen of 5.5 inches means that the diagonal of the screen is 5.5 inches. 1 inch ≈ 2.54 cm and 5.5 inches ≈ 13.97 cm.

Now on the market, more than 90% of the cell phone screen ratio is 16:9 (the ratio of length and width), which is usually seen in a rectangular phone.

Assuming that the screen length is a, according to the 16:9 ratio, the screen width is 9a/16, by the collinear theorem:

a^2 + (9a/16)^2 = 13.97^2, a = 11.07, the width of the 9x11.7 ÷ 16 ≈ 6.23.

So, a 5.5-inch screen is roughly a length of 11.07 cm and 6.23 centimeters wide.

Extended information

The most practical phone screen size

Surveys show that the average length of male palms is 18.9cm, and the length of thumbs is about 7cm, making 4.5 inches the optimal size. While women are 17.2cm and 6cm, the best size is 4.0 inches.

Most cell phones on the market today are between 5-5.7 inches, which is quite a bit larger than the optimal 4-4.5 inches.

To solve this problem, more and more phones now have a built-in one-handed mode that shrinks a 5.5-6-inch screen down to 3.5-4 inches for operation, allowing one-handed operation of even large-screen phones.

Reference inches_Baidu Encyclopedia