Hi MuMan1955,
We appreciate you reaching out to us. We understand that you are experiencing issues using the "Hey, Siri" feature and the Dictation feature.
First, let’s check for a software update and make sure that you are running the latest version of iOS.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
Next, let's make sure that you are not experiencing a connectivity issue.
A great way to test this is to try a different known-good Wi-Fi network.
Let's also test your device's microphones.
The article below can walk you through the steps.
If the microphones on your iPhone aren't working - Apple Support
1. Open the Voice Memos app.
2. Tap the Record button
, speak at the bottom of your phone, then stop the recording.
3. When you play back the memo, you should hear your voice clearly.
The rest of the steps in the article below may also help.
If "Hey Siri" isn't working on your iPhone - Apple Support
If your device's microphones are working fine and there is no connectivity issue, please reach out to us here so we can take a closer look into the issue: Get Support
Take care!