1) This feature is compatible only with Nothing smartphones. Please upgrade your phone system to the latest version. 2) Please upgrade your Nothing X app to the latest version. 3) Please make sure to download, install, and log into the ChatGPT application from the Google Play Store and use the ChatGPT Voice feature at least once. 4) You need to enable and apply the ChatGPT setting through Nothing X app >> Controls >> Voice AI >> ChatGPT. Please check if you meet the above conditions. If your issue remains unresolved following these steps, please contact us again.