I already solved, if your gonna change your settings you should re-start your phone if your notifications doesn't alert or pop-up on top. Thanks guy's for help. Now I'm really enjoying my phone.:beaming_face_with_smiling_eyes:
Solved! Go to Solution.
No sound everytime i have messages in kakaotalk and messenger but still if i do silent i don't have messenger message and kakaotalk on top of my phone.:pensive_face:
try submit the issue to samsung members app. they might be able to find out if the setting is wrong or if there is an issue with the phone.
also, have you tried reinstalling the app?