Kindly reset all settings of your's device in general management settings also Flight ✈️ mode on n off one time also optimize your's device in device care too 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.
As per your query, you have already done the possible troubleshooting steps on your device but still issue not resolved. So, we would request you kindly visit the service centre and inspect your device with the technical team end, they will provide you with all the information in a better way after inspecting the device physically.
