What is the format of pictures that can be inserted in MOTO L7 SMS?

L7 SMS is not a picture, but the code of the picture. If there is a predetermined picture in the other mobile phone, the picture corresponding to the code is displayed in the other mobile phone. If there is no predetermined picture in the other party's mobile phone, then the other party's mobile phone cannot display the picture.

If you want to say what format it is, it is EMP format, which is not commonly used.