Why does my Android phone always send out a message prompt, but when I open the screen, there is no message?

The mobile phone sends out an information prompt tone. Usually, the program calls the notification bar of Android to send notifications, so it plays the sound of short messages.

Suggestion:

Check the recently installed applications in the application list, and uninstall the infrequently used applications.

Wiping (double cleaning) operation is recommended.

Wipe will delete all the settings of the mobile phone and all the installed programs and related files, and restore to the factory settings, that is, only the original state of the mobile phone will be obtained.

The steps of double wiping are as follows:

1. Press the HOME key+power key to enter the recovery mode.

2. Use the volume down button to select Erase Data/Restore Factory Settings.

3. Press the HOME key to execute the command of erasing data/restoring factory settings, then use the volume reduction key to select Yes-delete all user data, and press the HOME key to execute the command.

4. After executing the Yes-delete all user data command, it means to start execution.

5. Press the volume down key to select the command to erase the cache partition, and then press the HOME key to execute the command.

6. After executing the command of erasing cache partition, press the volume key to select Yes-Erase cache, and then press the HOME key to execute the command.

7. After executing the yes-wipecache command, it means that erasing the cache partition has also been successfully executed.

After successfully erasing data/factory reset and erasing cache partition, choose to restart the system? Now just restart the system.