Ios15 reminders didn't pop up.

1, check whether the mobile phone is in mute or vibration state;

2, set the notification volume of the mobile phone and turn it up;

3. If there is still no prompt tone after receiving the message, please check whether the prompt tone of SMS is set to mute;

4. Try to replace the built-in system ringtone. If it fails, try to update the mobile phone system version.

SMS function recovery method

1. First, click and select the menu option in the application;

2. Check the hidden application to confirm whether the SMS function is hidden;

3, and then enter the search option in the setting options;

4, click the option to find information in the options application options;

5. Click Start again to resume SMS.