WhatsApp shares Metadata, device and connection information

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Data Sharing with Other Meta Companies (The Core of the Privacy Debate):

WhatsApp's policy explicitly details data sharing with other Meta companies (Facebook, Instagram, Messenger, Meta Reality Labs, etc.). The key is to understand the types of data shared and the purposes for sharing.

Personal Message Content is NOT Shared with Meta for Ads/Product Improvement: WhatsApp maintains that the content of your E2EE personal messages and calls is not shared with Meta for the purpose of Meta's own algeria phone number list product improvement, ad targeting on Facebook/Instagram, or for Facebook to suggest friends. This is due to the inherent design of E2EE.

Sharing of Metadata and Other Data for Broader Meta Operations: , account information, and information provided to customer support with other Meta companies for several core functions:
Providing and Operating Services: To leverage Meta's global infrastructure (servers, network, data centers) to deliver WhatsApp's services reliably and efficiently. This creates economies of scale for Meta.