This is false. I&#x27;ve tested this possibility by turning off phone and Signal Desktop still receives messages. Description of plan around which protocol was build is here [0].<p>[0]: <a href="https:&#x2F;&#x2F;gist.github.com&#x2F;TheBlueMatt&#x2F;d2fcfb78d29faca117f5" rel="nofollow">https:&#x2F;&#x2F;gist.github.com&#x2F;TheBlueMatt&#x2F;d2fcfb78d29faca117f5</a>