You can refer to the following two methods:

1, now there will be a file management system on the mobile phone, you can open it to find the file and then choose to move it to a location;

2. In some mobile phone security software, such as the garbage cleaning of Tencent's mobile phone housekeeper, there is a mobile phone slimming, which can find files according to the classification of files on the mobile phone, and then choose to move to other locations.