Huawei EC1260 Manual page 7

Note:
Micro SD card is an optional accessary. If the micro SD card is not provided in
the package, you can buy one yourself.
Do not remove the USIM/SIM card and the micro SD card when they are being
used. Removing the cards during an operation may damage the cards as well
as the device, and data stored on the cards may be corrupted.
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