CMF Phone 2 Pro won't record sound. What can I do?

Please try the following steps:
1. Close all background apps and try again.
2. Restart your phone and try again.
3. Check your network connection and switch to a different WiFi or mobile data network.
4. Ensure your phone is updated to the latest version.
5. Back up your data and perform a factory reset.

If the issue persists, please contact our customer support for further assistance.