Puk Code; Power Off - Maxcom MM41D User Manual

PIN code is used to prevent illegal use of user's SIM
card. If your phone has enabled PIN code protection,
there will be prompt for entering the PIN code. If wrong
the PIN code is entered for three times, the SIM card will
be automatically locked. You have to enter PUK code in
order to unlock it. PIN code is related to SIM card instead
of the phone and is provided by your network service
operator.

3.1.2 PUK code

PUK code, referring to personal unlock code, is used to
unlock a SIM card that is locked because of the wrong
input of PIN code. If the wrong input of PUK code
exceeds ten attempts, the SIM card will lose efficacy.
PUK code is provided by network service operator.
Please contact with the operator for the default PIN and
PUK.

3.2 Power off

To power off, please hold [Power key] until power off
screen appears.