In addition to protecting the mobile phone, the mobile phone shell also has a certain decorative and trendy properties, and many young girls like to customize their photos on the back of the mobile phone shell. But every time you want to change a new photo, you have to place a new case, not only trouble, but also a waste of money. Recently, Showshell launched a smart ink screen protective case, which can send photos to the screen of the protective case through NFC, and can change photos anytime and anywhere. However, what are the mainstream mobile phone cases on the market?

(1) 4 (3.97) inch 4 color HD ink screen, 4 colors are: black, white, red, yellow, using 480*800 resolution; The current mainstream products, take photos delicate.

(2) 3.7 inch 4 color ordinary ink screen, 4 colors are: black, white, red, yellow, using 240*418 resolution; Landscape and ink pictures are clear, and the sense of granularity in taking photos is more serious, and they are gradually phased out.

(3) 3.7-inch 3-color ordinary ink screen, 3 colors are: black, white, red, using 240*416 resolution; Landscape and ink pictures are clear, the sense of granularity is more serious, containing yellow color, into black, early products, have been eliminated, now some people, when 4 colors sold.

(4) Other 2.9, 1.54 inches, etc., are no longer mainstream;

(5) Of course, there are also customers who make the screen into a circle and other special-shaped display.