Huawei's mobile phone doesn't have any information. What's the matter with the prompt tone displayed for no reason?

Take Huawei P40 of EMUI 1 1 system as an example. The reasons are: there may be bugs in the mobile phone system and the system can be upgraded; It may be a hardware failure of the mobile phone, so it is recommended to contact after-sales maintenance; You can open the system settings page of your mobile phone, click the notification center, and turn off the notification function of all apps.

Tips for using mobile phone: 1, Huawei p30Pro can modify the system time, open the system setting page of mobile phone, and click System-Date and Time to set the 24-hour clock.

2. Huawei p30Pro has the function of "picking up the phone and automatically answering the phone". Open the system settings page of the mobile phone, click the smart assistant-gesture control, click "Stick to your ear" and turn on "Answer the phone" to use this function.

3. Huawei p30Pro has the function of automatic brightness level. Open the system settings page of the mobile phone, and click Display to open this function.

Data expansion: p30Pro adopts Kirin 980 processor and supports GPUturbo3.0, which can bring users a better gaming experience. The processor has dual NPU, which can perform complex AI operations. The system adopts emui9.0 and built-in Ark compiler. The mobile phone has five colors to choose from: sky, black tea, orange, aurora, bright black and mother of pearl.