Huawei allows users of older smartphones from both the Huawei and Honor brands, totaling 12 models, to register to receive the Public Beta software update of the HarmonyOS 4.0 operating system.
List of smartphone models that can register to receive the HarmonyOS 4.0 Public Beta update
- Huawei P30
- Huawei P30 Pro
- Huawei Mate 20
- Huawei Mate 20 Pro
- Huawei Mate 20 RS Porsche Design
- Huawei Mate 20X
- Huawei Mate 20X 5G
- Huawei Nova 5 Pro
- Honor 20
- Honor 20 Pro
- Honor V20
- Honor Magic 2
For Huawei P30, Mate 20 and Nova 5 Pro smartphones, the base version must be 3.0.0.168 (or 3.0.0.170 for Mate 20X 5G), while Honor smartphones should run on build number 3.0. 0.165 to get HarmonyOS 4.0 Public Beta installed.
Smartphone users listed above You can register at the My Huawei app > Home > Upgrade Early Access.
Source – HuaweiCentral