Oh, the issue with not being able to enable microphone access on your iPhone can be frustrating, but it's actually something that can usually be fixed pretty easily! It's likely tied to privacy settings, which Apple is pretty strict about for obvious reasons. Sometimes an app might not prompt you correctly to give it access to your mic, or you might have accidentally denied it when it first asked.
To fix it, the first thing you'd want to do is head over to your iPhone's Settings app. Once you're in, scroll down until you see the Privacy section—it'll be near the middle of the list. Tap on that, and you should see a section labeled Microphone. When you tap on that, you’ll see a list of all the apps that have requested access to your microphone. Just make sure the app you’re having trouble with is switched to "on" here.
Sometimes, an app won’t show up in that list if it hasn’t asked for permission yet. If that’s the case, you can try deleting and reinstalling the app. When you open it again, it should prompt you for microphone access. Just be sure to hit “Allow” this time around!
If you have problem persist after trying these solution, you can follow for more details assistance below.
https://thegeekpage.com/cannot-enable-microphone-access-to-iphone-apps-fixed/
