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"Device characteristics and device software. What you're doing on your device, such as whether our app is in the foreground or if your mouse is moving (which can help tell humans from bots). Identifiers that tell your device apart from other users'. Device signals. Information that you've shared through your device settings (e.g. GPS location). Information about the network that you connect your device to."

Meta collects extensive device data including mouse movements, device signals, unique identifiers, network information, camera roll contents, and voice-enabled feature data — well beyond what's needed for core social networking functionality.

"Information that you've shared through your device settings (e.g. GPS location). Location-related information. Information about the network that you connect your device to, including your IP address. Information from cookies and similar technologies."

Meta collects location data through multiple methods including GPS, IP address, and network information, and uses it across nearly every processing purpose listed in the policy, from ad personalization to analytics to research.

"We'll notify you before we make material changes to this Policy. You'll have the opportunity to review the revised Policy before you choose to continue using our products."

While Meta says it will notify users of material changes, the only recourse is to stop using the products. Continued use constitutes acceptance of new terms, giving Meta effective unilateral power to change privacy practices.

"Here's more detail about who we share information with: Partners — Advertisers and Audience Network publishers, Partners who use our analytics services, Partners who offer goods or services on our Products and commerce services platform, Integrated partners. Vendors — Measurement vendors, Marketing vendors, Service providers. Third parties — External researchers, AI integrations, Other third parties."

Meta shares user data with a very broad range of third parties including advertisers, analytics partners, measurement vendors, marketing vendors, external researchers, AI integrations, and other unspecified third parties.

"We keep information for as long as we need it to provide our products, comply with legal obligations or to protect our or other's interests. We decide how long we need information on a case-by-case basis. In some instances and for specific reasons, we'll keep information for an extended period of time."

Meta provides no specific retention timelines, deciding on a case-by-case basis how long to keep data. They also reserve the right to retain information for extended periods, with no clear upper bound on how long data is stored.

"For some of these purposes, we use information across our Products and across your devices. We share the information that we collect globally, both internally across our offices and data centres and externally with our partners, third parties and service providers. When we show you ads through Meta Audience Network when you visit other apps, our systems automatically process the information we've collected and stored about you to identify you as a Meta Product user and tailor the ads that you see."

Meta tracks users across all its products (Facebook, Instagram, WhatsApp), across devices, and into third-party apps via Audience Network. They use device identifiers, cookies, and cross-company data sharing to build unified profiles.