Coloros unread messages are reminded every 3 minutes.

1. First, click to open the settings of Apple's mobile phone and enter the settings page. Slide down to find the notification option, and you can see it directly after setting it.

2. Secondly, after the notification is turned on, drop it down, find the "Information" option, and click it. On the information page, find the "Repeat Reminder" option and click.

3. Finally, click "Never" and check it. You will only be prompted once after receiving the text message. If some information reminds you that you need to repeat the reminder many times, you can follow the above operation.