Why mobile phones that can send emoji would use Unicode?

Mobile phones use Unicode to ensure consistent encoding and representation of emojis across different devices and platforms. Unicode provides a standardized set of characters, allowing emojis to be displayed uniformly regardless of the operating system or application. This standardization ensures that when a user sends an emoji, the recipient sees the same image, fostering effective communication. Without Unicode, emojis would vary in appearance, leading to confusion and misinterpretation.