How to make the mobile phone automatically wear a customized tail when sending text messages to others?

You can enable the SMS signature function of your mobile phone.

Go to Information-Settings-General and check "Signature" at the bottom of the interface.

If you need to use this function, you can also edit the signature content in.

SMS signature: It belongs to calling service and is a quick and convenient personalized signature method provided by operators to customers. When a customer sends a short message, the short message system will attach a personalized signature to the content of the short message according to the customer's settings, and then send it to the called mobile phone customer.