Opporeno7 Why didn't anyone send a message when the screen was black?

1. Confirm whether do not disturb mode is turned on:

Enter the phone settings-sound and vibration-do not disturb mode, and check whether the switch is turned on. Incoming calls will not light up when Do Not Disturb mode is turned on.

* Note: When the Do Not Disturb mode is turned off, turn on the alarm for disturbing and repeating incoming calls, and the contacts who are allowed to disturb and repeat incoming calls will light up within three minutes.

2. Check the window position of the infrared sensor for obstacles:

If there is oil stain, or opaque film (not original film) or original protective shell is used, the infrared sensor may be blocked, resulting in functional failure. It is recommended that you remove oil stains, protective shells or opaque films, and use official standard protective shells.

View method of window position of infrared sensor: Enter Settings-System Management-Customer Service-User Manual-Overview of Mobile Phone and Quick Start-Brief Introduction of Mobile Phone-Photosensitive &; infrared

3. Determine whether to open the information notification.

Open mobile phone settings-notification and status bar-notification management-find information-open notification permission-open information notification (lock screen)