Where did the face come from when texting? Like the heart. . . It's the kind of facial text that iphone says on the Internet. . . . Seek an answer

Yan Wen is setting up-Universal-Multilingual Environment-Adding Characters to Keyboard. If you use it, it is good to enter three words Yan Wen when you edit the short message. If it is a picture, you must type it yourself. For example, if you enter a train, the train mode will appear in the alternative options.