HarmonyOS 7: Full-Stack Self-Developed OS Boosts Performance 40% with On-Device AI

At HDC 2026 in Dongguan on June 12, Huawei released the HarmonyOS 7 developer beta. The ecosystem now counts 66 million HarmonyOS 6 devices, 11 million registered developers, and over 400,000 available apps and services.

Full-Stack Self-Development and Security

HarmonyOS 7 is 100% full-stack self-developed, completely removing the Android AOSP compatibility layer. It runs only native HAP applications, built on 110 million lines of self-developed code and a microkernel architecture. This reduces the attack surface by 80% and achieves CC EAL5+ security certification.

Performance Improvements

System response speed increases by 40%, application cold start accelerates by 35%, memory occupancy drops by 30%, background keep-alive capability improves by 60%, and after four years of continuous use the smoothness decay rate stays below 3%.

AI and Distributed Evolution

The Pangu large model 6.0 is deeply integrated at the system level, enabling offline voice recognition at 98% accuracy, document summarization, and smart photo editing without uploading data to the cloud. The Xiaoyi assistant reaches 180 million daily active users. Distributed Soft Bus 2.0 compresses multi-device collaboration latency to within 8 milliseconds, supports simultaneous collaboration across 16 devices, and enables seamless flow between phones, tablets, smart screens, and other devices.

The release marks a milestone in HarmonyOS's journey from distributed capabilities and HMS to a pure-blood, full-scenario OS, driven by developer contributions.