WhatsApp is likely to integrate with Microsoft's Cross-Device Resume feature, which has previously supported applications like OneDrive, Office, Edge, and Spotify. This integration may allow users to access recently-opened chats and potentially facilitate seamless voice call handoffs between devices. Currently, support for WhatsApp is becoming available in the Windows 11 settings, but the feature is not yet fully functional. Additionally, WhatsApp is testing voice and video call capabilities in its web client, enhancing its desktop and mobile platform synergy.