Why do I use my mobile phone to send text messages to others, but another number is displayed?

I use my mobile phone to send text messages to others, but another number is displayed, which is caused by the wrong setting. The solution is as follows:

1, first open the dialing software, open the dialing key, find the three horizontal lines in the lower left corner, which is the main menu, and then start the next step.

2, and then click on the three horizontal lines, that is, after the main menu, find an option for phone settings.

3. Then find the advanced settings in the phone settings, as shown in the figure below.

4. After clicking Advanced Settings, scroll down to find an option named Send Local Phone Number, as shown in the figure below.

5. Finally, click the option of sending local phone number, and find an option called hidden number in it. Click it to solve the problem.