Thank you for sharing your concern. We acknowledge your query and apologize for the same and your feedback is also noted. Samsung is aware of the symptom that may appear on devices updated to Android S OS. Regarding it, Samsung is scheduled to release new software that will resolve the symptom. Therefore, please check for updates to your device software regularly. (Settings > Software update) To ensure the best experience, Samsung encourages all users to keep software and applications up to date at all times. To use your device properly before a new software update, please turn the feature on if the option about app notification is disabled.
For this, on Settings, tap Notifications > More. On App notifications, choose All and Show system apps(within three-dot), then select Android System > Turn on ‘Show notifications’ option and ‘Allow sound & v
