If you interact with Meta AI directly within

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While message content is E2EE, certain elements are not, as they are inherent to service functionality:
Profile Picture, "About" Information, Group Names/Descriptions: These are stored on WhatsApp's servers and visible to others based on your privacy settings.

Community and Channel Content: Channels, being a broadcast feature, are not E2EE. Content shared in Channels, user reactions, and poll responses are collected and processed by WhatsApp.

Meta AI Interactions: a chat, your prompts and messages to the AI are switzerland phone number list processed by Meta to generate responses and improve the AI service. These specific interactions are not E2EE from Meta.
Messages, Media, and Calls (Server-Side Handling for Delivery):

As mentioned, messages and media are temporarily stored encrypted on servers for delivery. Once delivered, they are deleted from WhatsApp's servers.
Call details (who called whom, when, duration) are metadata, not content, and are collected.