Keycap, Symbol "nine"
This is a numeric key, which is depicted as: on a square frame, there is an Arabic numeral "9". This button is commonly used in telephones, computer keyboards, or mobile phone dials. This emoji can be used not only to specify the meaning of entering numbers on the keyboard, but also to dial telephone numbers. Sometimes, it can also be used to express the meaning of blessing when someone gets married, meaning: be happy for a long time.
Different platforms adopt different designs. For example, in Facbook and OpenMoji platforms, the depicted background images are black and gray respectively; Au by KDDI and Docomo platforms display white background frames; The Softbank platform shows a red background picture; As for the background frames of other platforms, they are all designed in blue. In addition, the color of the number "9" also varies from platform to platform. Most platforms display white numbers, some platforms display black numbers, and some platforms display yellow or blue numbers.