LG AS855 Owner's Manual page 37

Important Connection Information
To avoid loss of data, DO NOT remove the USB cable, the
microSD card, or the battery while accessing or transferring
files.
DO NOT use your computer to change or edit folder or file
names on the microSD card, and do not attempt to transfer
large amounts of data from the computer to the microSD
card. Doing so may cause the microSD card to fail.
DO NOT turn off or restart your computer, or put it into
standby mode, while using a mass storage device. Doing so
will result in loss or damage of data.
The microSD card can only be mounted for use by either the
device or a connected computer. Prior to accessing the card
via a different method, it must first be unmounted from its
current device (phone or computer-USB).
The microSD card can only share a connection with one
IMPORTANT
device at a time, either your device or your computer
(via its USB connection), not both. You can not browse
the contents of the card via your device if they are
currently being browsed via your computer.
Connecting to Networks and Devices
35