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●Uninstall the SIM card
First、Lift up the edge of the SIM card;
Second、Pull out the SIM card.
5.1.4 Notice
●Please cut off the power before installing or
uninstalling the SIM card.
●The SIM card should support GPRS and the
GPRS should be opening.
●Inquiry by call needs the SIM card supporting the
calling line identification presentation.
●If you enable the PIN code of the SIM card,
please use your mobile phone to disable the PIN
code.