How to change the name in front of a short message sent by mail:

This name was set in someone else's mobile phone. If you send it to me, your name is Tom in my mobile phone flying letter, that is.

Tom: Your message has been received.

But if I don't set it, add it as a friend, or modify the displayed name, or save it after modification, it's your own name in your personal settings.

But if you change your name to, for example, dear customer, and so on. You can't send a message in a flying letter.

Mine is the version of Fetion 1.0. 17.