How to set an SD card as default storage on your Android device These instructions work for all SD-card-compatible devices running Android 6 or later. If you're unsure if your phone or tablet ...

Setting your device to use an SD card as internal storage allows you to install apps directly onto the SD card, eliminating the need to frequently move files when your internal storage is low.

If your Android phone is running out of storage space, many phones will allow you to insert an SD card, which you can set as the phone's primary storage.