You cannot use voice search with the built-in MIC (only TVs with a built-in MIC).

To use the built-in MIC, you may need to update the TV's software.
Check if the Built-in MIC Switch is on. The voice recognition performance of the built-in MIC may also degrade in the following cases.

• When eARC features are enabled
• When a sound bar is connected
• When [Digital audio output] is set to [Prioritize pass through]