Hello Iphoneuser1238,
Welcome to Apple Support Communities!
We want to make sure Siri is working as expected on your iPhone.
Let's double check that your Siri settings are correct with these steps first:
"Check if "Hey Siri" is turned on
- Go to Settings.
- Tap Siri & Search.
- From here, make sure the following settings are turned on:
- Listen for "Hey Siri"
- Allow Siri When Locked"
This Apple Support page has the full details: If "Hey Siri" isn't working on your iPhone - Apple Support
If the issue continues, do you have any VPN or connection software installed? Are you connected to your Wi-Fi network? This can tell us if the issue is connection related or not.
We hope this helps to isolate and resolve the issue with Siri.
Cheers!