Traditional Culture Encyclopedia - Weather inquiry - What's the matter with Huawei's black screen displaying time and weather?

What's the matter with Huawei's black screen displaying time and weather?

This is Huawei's new mobile phone. The old black screen will not be displayed. This feature is only available on P30 or later. Will not consume electricity, more humane. You can know the time and weather without opening the screen frequently. Wechat and SMS are clear at a glance. This is progress and a good thing.