How to migrate OPPO A57 version to SD card? By default, the software in the OPPO A57 mobile phone is stored in the memory of the mobile phone, because the preferred installation location can only be set when the memory of the OPPO mobile phone is lower than 16G, and the preferred installation location option can only be seen after the memory card is installed in the supported model. You can store the pictures, music, videos and other files in the OPPO A57 mobile phone on the external memory card, enter the software settings and set the storage path to the external memory card. Take Netease Cloud Music as an example, enter the settings of Netease Cloud Music-set the download directory-select memory card 2, and save the downloaded songs in an external memory card.