It's not clear what you mean. Are you saying you need to use an external microphone in order for Siri to work?
It's not clear what you mean. Are you saying you need to use an external microphone in order for Siri to work?
Yes
Does the built in microphone work for other things such as calls and voice memos? What troubleshooting steps have you taken so far?
Siri is only working on microphone.