Some Android users have complained about seeing an unread SMS message(s) notification on their Android phones. Checking the whole phone revealed no unread messages. To resolve this issue:
* Go to Settings
* Application Manager
* All applications (on the top)
* Locate the BadgeProvider or BrandingProvider app and select it
* Click "clear data"
* Reboot the phone
If this doesn't work then install any good SMS cleaning / Unread SMS remover app.
Consider Reset Unread Sms @ https://play.google.com/store/apps/detai...dsms&hl=en and History Eraser @ https://play.google.com/store/apps/detai...ife.eraser