In case the issue still occurs, please visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
Kindly reset all settings of your's device in general management settings also go to wifi setting and click on intelligent wifi then try to it's again. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
