Update WhatsApp to the latest version from the App Store or Google Play Store
Open WhatsApp and check for the Meta AI chat or search bar icon
If available, tap the Meta AI icon to start using it
If you do not see it, wait for the feature to roll out in your region and account
Make sure your WhatsApp account is eligible and your app language is supported
Join any official WhatsApp beta program if you want earlier access
Keep automatic updates turned on so you get the feature when it becomes available