Someone shared this above which should answer your question - https://engineering.fb.com/2021/07/14/security/whatsapp-multi-device/ https://engineering.fb.com/2

Someone shared this above which should answer your question - https://engineering.fb.com/2021/07/14/security/whatsapp-multi-device/ https://engineering.fb.com/2021/07/14/security/whatsapp-mult... > To achieve this, we had to rethink WhatsApp’s architecture and design new systems to enable a standalone multi-device experience while preserving privacy and end-to-end encryption.