Cognition said on X that Devin can now build and test iPhone Duo apps inside macOS cloud VMs, letting the agent unfold the phone, fold it, close it, check every screen and return video verification of the run. The examples given include Devin shooting someone's portrait while they watch themselves on the outer screen, sending posing cues, half-folding the phone so it stands on a table for timer shots, and closing it mid-countdown to confirm no photo is lost. The claims come from a demo post shared by Cognition's own account, with no independent verification and no details on availability or pricing.