The mobile phone sends a message with the word set.

You can set it in the signature file in SMS settings.

Signature documents when sending emails to relatives, friends, classmates, customers, etc. , you can add your own electronic business card to the e-mail. This electronic business card is a signed document. You can design personalized business cards or email signature files online through official website, a mobile phone network disk. In Baidu Post Bar, you can also use signature files. You can add some signed pictures or emails you like to make it easier for others to know you. In qq space, there is also a signature file function. When you leave a message to others or publish your own blog, you can choose whether to use a signature file to show your unique personality.