HarmonyOS

HarmonyOS presents a familiar grid-of-icons phone interface, but its distinguishing ideas live in cross-device continuity. A control panel pulled from a corner doubles as a map of nearby devices you can tap to hand off audio, calls, or a whole app session, treating phone, tablet, watch, and car as one fluid surface rather than separate islands. Service cards expand from icons into glanceable, interactive tiles without fully opening the underlying app. Notifications and quick toggles follow the now-standard pull-down conventions, lowering the learning curve for anyone arriving from other mobile systems. The interface's ambition is the seam it is trying to erase — the boundary between devices — and its challenge is making that distributed model legible, since handoff is only powerful when users can predict where their content will reappear.