I have been facing this issue since a very long time.
I get an exclamation mark on my wifi symbol as soon as I download/stream heavy stuff and internet stops working. Works perfectly fine on all other devices at home so shouldn't be a router/network issue.
Really troubled by this issue as I can't really use the Wifi connection at home.
Apologies for the delay in response. However, understanding the criticality of the situation; we had to ensure the well-being and safety of our employees which led to the delay in response.
Hope your issue is resolved. In case the issue still persists please follow the below mentioned steps.
Check device in safe mode: Using Safe Mode on a Samsung phone or tablet allows you to force the device to run the essential operating system, and disable most 3rd party applications.
Enter safe mode: Press and hold the Power key, when Power off icon appears.>Press and hold the power off icon.
Exist safe mode: Press volume down and power key simultaneously for 5 seconds to restart the device.
Note: If your device functions correctly in Safe Mode, it is most likely that the issue lies with a 3rd party application that can be uninstalled to resolve the problem.
For further assistance, register your concern in Samsung Members Application (Samsung Members App > Feedback >Error report > Attach log file for any issue)
