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The SIM card socket is the suppressing type socket. When
you press it, the SIM card will be ejected out; press it again,
it will be locked. The insertion direction of the SIM card is as
shown in the above figure, with the contact points pointing
forward, and the notch facing downward. Otherwise it
cannot be inserted.
3) Dust-proof
Because the opening of the SIM card slot is facing upward,
please remember to replace the dust-proof cover after the
SIM card replacement to prevent the entry of the dust into
the slot, which will affect the use life of the device.
4) Water-proof
Because the SIM card slot is facing upward and in open
state, be sure to prevent the spray of liquid onto the
SMB32.
5) Software upgrade
To upgrade software, please contact your supplier to obtain
the latest software upgrade connection, enter the
connection into the upgrade address field of the SMB32,
and then press the "start" button. Please note that the
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