I heard how to send a text message so that I could call the police. What is the number?

You can edit the alarm content and send it to "12 1 10+ the last three digits of the area code", then you can alarm. Let's use an Apple 6s mobile phone to demonstrate.

1. First, click the information in the mobile phone desktop.

2. Then click the edit icon in the upper right corner of the screen.

3. Then enter the last three digits of the recipient's area code 12 1 10+.

4, and then edit the contents of the alarm.

5. Finally, click the send icon.