Please perform the following steps:
>Clear the RAM memory of device (Scroll down notification panel > Setting> Device care >Memory> Clean Now).
> Stop the background running app (Tap on the left soft key and close all the running apps).
>Check for the latest device O/S (Scroll down Notification panel >Settings >Software Update >Download updates manually).
For further assistance, register your concern in the Samsung members app(Open Samsung members app>click on “+“icon>send feedback>Error report/ Ask Questions).
Team Samsung Members