Does Signal work with WhatsApp or vice versa? Masha Kolenkina Updated February 04, 2017 16:24 Follow As a Signal user you can privately message and call other Signal users. Signal <-> Signal communication is Private Signal <-> WhatsApp no communication available Related articles Does my contact need Signal? Is it private? Can I trust it? Who can I message on Signal Desktop? Where are my messages? Who can I call? How do I install Signal Desktop? Comments 0 comments Article is closed for comments.