What's going on with Samsung S8 s8 message notification?

According to the description, it is recommended that you follow the following steps:

1, restart and try again;

2. Check whether the mobile phone has a system push notification, and if so, update the mobile phone to the latest system version.

3. Back up data (contacts, text messages, photos, etc. ) and try to restore the factory settings.

If the problem still exists, it is recommended that you take your mobile phone, purchase invoice and warranty card to the local Samsung after-sales service center for testing.