Below are the types of storage where app data and your files can be stored.
Internal storage
This is the built-in storage which contains the
Android system, preinstalled apps, text messages, and cached data from the apps. You can also install apps that you've downloaded and capture screenshots to this storage.
USB storage
You can connect an external USB device—such as a USB flash drive or an SD card reader—and use it as your removable storage device. You may need to purchase an appropriate adapter to connect your USB storage device to
HTC 5G Hub.