Tizen OS 3.0, released in 2017, represented a significant milestone in the evolution of the open-source, Linux-based operating system jointly managed by the Linux Foundation, Samsung Electronics, and Intel. This paper provides a systematic analysis of Tizen 3.0’s architectural refinements, new feature sets, and its strategic positioning in the wearable, smart TV, and mobile device ecosystems. Key enhancements include the transition to a 64-bit kernel, the introduction of a multi-user support framework, enhanced graphics performance via Vulkan API integration, and a redesigned notification system. The paper concludes that Tizen 3.0 bridged the gap between a legacy embedded OS and a competitive platform for Internet of Things (IoT) convergence, although it faced persistent application ecosystem challenges.

The old notification tray was a simple list. Tizen OS 3.0 introduced "Interactive Notifications." Users could reply to WhatsApp, Line, or SMS directly from the watch using: