1. Open the settings in Huawei's mobile phone and enter the storage. 2. Click Clear to speed up the input. 3. Then click the copy file option to open. 4. Open the document in the copy file interface. 5. Select the file to delete, then delete and return.

Huawei P40 is a 5G smartphone owned by Huawei, which was released in Paris, France on March 26th, 2020. The Bank of China version was listed on April 8, 2020. The price of 6GB+ 128GB is 4 188 yuan, the price of 8GB+ 128GB is 4488 yuan, and the price of 8GB+256GB is 4988 yuan.