KPN USB-modem User Manual page 21

InBox: Save the received SMS.
OutBox: Save the successfully sent SMS.
DraftBox: Save the editing SMS which haven't been sent.
The drafts can only be saved in PC side.
New Messages: Write a new message.
For example: "Message in InBox PC : 2 Item(s) (U)SIM Card: 1 Item(s)" means: The PC side has 2 short message and
there are 1 short messages in the Inbox of the SIM card , "SIM Card capability" means the SIM card can hold 30
short messages.
Different SIM/USIM cards will have different capacities. For more information, please consult your supplier.
It will show the capacity automatically in usage, like the above "30"
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