Samsung SGH-I257ZKAATT - Manual (Page 120)

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Connecting as a Storage Device
You can connect your device to a PC as a removable disk and
access the file directory. If you insert a memory card in the
device, you can also access the files directory from the
memory card by using the device as a memory card reader.
Note: The file directory of the memory card displays as a
removable disk, separate from the internal memory.
1. Connect the USB cable to the device and connect the
cable to the computer. After a few seconds, a pop-up
window displays on the PC when connected.
2. On the PC pop-up, click Open device to view files.
3. Copy files from the PC to the memory card.