Please perform the following steps:
>Perform Interactive checks through Samsung Members app (Samsung Member> Get Help> Interactive checks->wi fi ).
> Reset the device settings by navigating to Settings >> General Management >> Reset >> Reset Settings.
>Reset network settings (Scroll down notification panel >Settings >General Management >Reset >Reset network settings).
>Once try to connect with any other router.
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