When you use WhatsApp Web or the Desktop app, data syncs between your phone and your computer. This includes your chat history, contacts, and media. While your phone acts as the primary device, the web client processes and temporarily stores this data for display. Usage data from the web client, like browser type or operating system, also transmits to WhatsApp to optimize the web experience and troubleshoot issues.
Payment Transaction Metadata
Even if the content of a payment whatsapp data transaction remains encrypted, payment transaction metadata is collected. This includes details like the timestamp of the transaction, the amount, the currency, and the participants' identities. This metadata is necessary for processing the payment, complying with financial regulations, and preventing fraud. While the sensitive financial details are handled by partner banks, this transactional metadata remains crucial for the payment service's operation.