Samsung Galaxy S3 doesn't show SMS notification I need help with a problem in a Samsung Galaxy S3 with Android 4.3.

I can't receive SMS notification when a SMS is sent to my mobile phone.

Every time I have to open the application to check if there are unread messages.

Notification flag is active.

I deleted cache data and I restarted the phone pressing the button "Volume up + home + power" and I selected "wipe cache partition" in "Android system recovery", but the problem persists.
Problem solved.
I deactivated Hangouts and now it works fine.