Telecom's Tianyi mobile phone, can my mother find the text message? How can I keep her from noticing that I sent a message?

There is an old saying, "If you don't know, do it yourself."

The amount of short messages can be easily found, even the content of short messages can be found, but she may not have permission to view the content. However, as long as the owner can check the amount of short messages and find out which numbers have been sent.

If she can't find it, she has to apply for the card herself and set the service password.