Wo Xiao can't send a text message 1069.

1. First of all, my trumpet needs to send short messages through my trumpet APP.

2. Secondly, the short message receiver is displayed as a small number.

3. Then you can reply directly. Wo trumpet is a service launched by China Unicom to protect the personal information of mobile phone users. Every month 10 yuan, you can have 1 to 4 small numbers to protect privacy and prevent harassment.