What happened to the little moon in front of the information number sent by Apple's mobile phone?

The reason why there is a small moon in front of the information number sent by Apple's mobile phone to the other party is because the number has a hidden reminder, so there will be a small moon sign in front of the short-term number.

Take the iPhone6splus model as an example, and the specific setup steps are as follows:

1. Click on the short line icon below the Apple phone to enter the SMS interface.

2. Find the contact person who needs to set the SMS number on the SMS page and click Enter.

3. On the SMS number page, click on the top right! Icon to enter the details page.

4. On the hidden information page, turn on the switch to the right of the hidden reminder.

5. After opening the hidden reminder, click the Finish button at the top right of the hidden information page to finish the setting.

6. After clicking, you can see the small moon sign in front of the contact's SMS number.