2) Convert File Free and File Total Values to KB, Determine Total Size

Next you'll want to locate your File Free and File Total values and convert them from bytes to kilobytes for easier measurement. To do so, simply click the Options icon on your smartphone's home screen once again, and this time select Status. On the next screen, among various other data, you'll find numbers in bytes for your File Free and File Total. From there, you should divide both numbers by 1024--the number of bytes in a kilobyte--and then record or store the new values in another location for later use.

To determine your device's total file size, click the BlackBerry Menu--located directly the left of your device's track ball, if you're using an 8xxx series device--and select Database Sizes. Your Total Size value will be listed in bold at the top of the screen. Again, write down this number for later.

3) Launch BlackBerry Desktop Manager, Find Total Application Space

Open your BlackBerry Desktop Manager software and connect your BlackBerry to your PC. Type in your password if necessary.

On the Desktop Manager screen, click the Application Loader component, hit Next on the welcome screen, and make sure the box next to List additional applications that are installed on the device is checked. (Depending on the last time you used the Application Loader, you may need to click through another configuration screen at this point.) Next, record the value for Total application space, listed directly beneath the Application Name field.

Finally close the Application Loader and the BlackBerry Desktop Manager. Detach the BlackBerry from the PC.