It is not possible to modify the dialog which asks users to grant microphone and speaker permissions for your Twilio Voice browser app. These permission dialogs are locked to protect users from malicious applications.
For more details, you can refer to the Twilio Help Center article.
Next Steps:
- Inform the Customer: Let the customer know that the microphone permissions dialog cannot be customized due to security reasons.
- Alternative Solutions: If the customer is looking for a better user experience, suggest providing clear instructions or guidance within their app on why the permissions are needed and how to grant them.
If you have any further questions or need additional assistance, feel free to reach out.