1) ChatGPT is only compatible with Nothing smartphones. Ensure your phone system is updated to the latest version.
2) Upgrade the Nothing X app to the latest version.
3) Make sure to download, install and log into the ChatGPT app from the Google Play store and use the ChatGPT Voice feature at least once.
4) Enable and apply the ChatGPT setting through Nothing X app > Controls > Voice AI > ChatGPT.