LG MS910 - Manual (Page 50)

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microSD Card
Device memory
The LG Esteem™ has 4GB of internal memory where you can store user
content such as photos, videos, voice recordings, etc. In addition, it also has
removable memory in the form of a 2GB microSD card. Most applications
allow you to choose where the user content will be saved either in the
internal memory or to the removable microSD card.
For example, in the Camera application, touch the Settings icon > SD
card & phone storage > Internal memory or SD card. When viewing
the Gallery application, photos saved in the internal memory are stacked
separately from those saved to the SD card.
Using Mass storage mode
When you connect the phone and PC using a USB cable and set your
device’s USB connection mode to Mass storage, you will see two
removable disks on the PC. You can copy files to/from both the internal
memory and the removable SD card.