How does oppo switch from mobile phone memory to sd card? Only when the memory of OPPO's mobile phone is less than 16G can the preferred installation location be set. Supported models require an SD card to be installed before you can see the preferred installation location option. For mobile phones that don't support mobile phone software, you can store pictures, music, videos and other files in the mobile phone on the external SD card, enter the software settings, and set the storage path to the external SD card. Take Netease Cloud Music as an example. Enter Netease Cloud Music Settings-Set Download Directory-Select Memory Card 2 to save the downloaded songs in an external SD card.