You can easily save files from your phone’s internal storage to your SD card. That way, it serves as a back-up storage medium.

This article runs through how to move apps to an SD card in Android, just in case you'd like to free up space on your smartphone for more important things.

You can move apps to an SD card from an Android phone's Settings with just a few taps, helping free up your phone's internal storage.

Here's how to switch the default storage for photos on your Samsung Galaxy S7 to a microSD card.