The HTC One A9 packs Marshmallow and an SD card slot – this is awesome. Why? Because Marshmallow (Android 6.0) and the HTC One A9 can do something very clever with an SD card – treat it as internal memory. If you’ve had memory issues with Android before, this could be a potential remedy for you. In this video we run through the process of formatting a card to internal memory, highlight some pitfalls of the process and run through how much memory is usable from the get-go on the One A9.