Hi, read on another site this solution and this worked for me
Go to settings -> Notifications -> Advanced (top right) -> Advanced Notification Settings -> Contacts
Then click on default, missed calls and voicemails seperately and change the importance and sound etc.
This has worked for me, I hope it works for everyone else.
Hi I'm also getting this issue not ideal but if you download the official hiya caller Id and spam app from play store which I believe is software integrated into the official samsung phone app you will get missed phone call notifications back till an official fix and full caller id and spam protection
Thank you just downloaded it and tried it but now I seem to have a hiya notification all the time that I can't get rid of is there something I'm doing wrong?
I had the same issue however fixed mine by going to the status bar settings and turning off "show recent notifications only" having that switched on only shows the most recent 3 notifications, also i have the edge lighting and led indicator turned on for notifcations, hopefully this helps you all.
Here is a screen shot of my hiya call settings within the hiya app see if yours are the same I get the large purple notification when missed call which disappears when I tap on it or if you mean the white hiya notification this also disappears when I acknowledge seeing the missed call.