1. From the home screen, tap the Settings icon.
   
2. Tap Storage.
   
3. The device storage summary will be displayed beneath Internal storage.
   
4. Scroll down to view remaining memory card space.
   
5. The AT&T Trek HD is available with 16GB internal memory (10.48GB usable storage) with the option to add a MicroSD card (sold separately) up to 32GB.