Hey Siri isn’t responding for little far away!
I have to take the phone near microphone phone to call Hey Siri!
It is not responding from distance !
Retrain Siri with your voice
Go to Settings > Siri & Search, turn off Listen for “Hey Siri,” then turn on Listen for “Hey Siri” again. To change Siri accessibility settings, see Use accessibility features with Siri on iPhone.