The Kirin 820 chip can be upgraded to the Hongmeng 3.0 system, but whether it can be upgraded depends on whether the manufacturer launches the corresponding update package. If the manufacturer provides the relevant upgrade package, users can automatically upgrade through OTA or go to the official website to manually download and install, in order to achieve the Kirin 820 chip mobile phone upgrade to Hongmeng 3.0 system. Upgrading to the Hongmeng 3.0 system will bring a more smooth and stable system experience, as well as a richer function.