2. After entering, click Desktop Settings, as shown in the figure below.
3. Then, in the open desktop settings page, click Open Smart Assistant, as shown in the figure below.
4. After opening the smart assistant, open the negative screen of Huawei mobile phone, as shown in the figure below.
5. After turning on the smart assistant, return to the mobile phone desktop and slide to the right. You can see that Huawei's mobile phone has turned on a negative screen.