Sharp AQUOS Crystal - Manual (Page 322)

Connectivity 313
2. Uncheck the box on the Connections Optimizer page.
Connection Optimizer will turn off.
Connect to a Computer via USB
One way to back up or sync files between your phone and a computer is by using a direct USB
connection.
You can use the supplied micro USB cable to connect your phone directly to your computer and
transfer music, pictures, and other content files.