Why can't I use google assistant while in a call anymore?

[Android Central Question]

I have a Samsung S8 and for the last couple of years I have been able to use google voice searches while in a phone call with no problem. Recently that stopped and now if I press the search button, it activates the engine but it cannot hear my voice. If I'm not in a call, all voice commands work perfectly.
Regards, Bill.

 

[B. Diddy]

Welcome to Android Central! Which carrier are you on, and what's the exact model number of your phone? Are you currently able to be on a phone call and also surf the web at the same time?

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