Hi Jerry M 2016,
We see you're posting from the If "Hey Siri" isn't working on your iPhone resource. Have you tried restarting your iPhone? Sometimes that can help with minor software issues. Also, do you have a good Wi-Fi or cellular connection? Does the issue persist if you connect to another network? Are you running the latest software on your device? You can learn how to update here: Update your iPhone or iPad
These questions will help narrow down the cause of your issue. We look forward to hearing back from you.
Take care.