Connections 130Enable Downloading for WebApplicationsImportant!: Before you can download a webapplication you must insert an SD into thephone and enable the Unknown sourcesfeature (enables downloading). For moreinformation, refer to “Installing the microSDMemory Card” on page 7. Also, see“Mounting the SD Card” on page 40.1. Press ➔ and then tap(Settings) ➔ Applications.2. Tap the Unknown sources check box.3. Tap OK to allow install of non-Marketapplications. Tap again to remove thecheckmark and disable the installationof non-market applications.Warning!: Not all Web applications are safe todownload. In order to protect your phoneand data, use Android Market to install webapplications. For more information, refer to“Downloading a New Google Application” onpage 111.PC ConnectionsYou can connect your device to a PC usingan optional PC data cable using variousUSB connection modes. Mass storage is thedefault connection method.• Mass storage: allows you to use the onboardstorage capacity of the phone to store andupload files. This option allows your computer todetect the phone as a removable storage drive.Connecting as a Mass Storage DeviceYou can connect your device to a PC as aremovable disk and access the file directory.If you insert a memory card in the device,you can also access the files directory fromthe memory card by using the device as amemory card reader.Note: The file directory of the memory card displaysas a removable disk, separate from the internalmemory.1. Insert a memory card into the device totransfer files from or to the memorycard.Note: To use any downloaded market applicationthat requires a USB connection between yourphone and your PC, you should first set theUSB setting to Mass storage.2. Press to return to Idle mode.3. Connect the multifunction jack on yourdevice to a PC using an optional PCdata cable.A pop-up window displays on the PCwhen connected.