Maxcom MM824, User Manual

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16.5.2 Phone Lock
Select Menu > Settings>Security>Phone
Lock
You can enable/disable the phone lock code and
update the code. A default code is 1234 .
16.5.3 Update the Phone Password
Select Menu > Settings >Security>Update
Phone Password to update the default
password.
16.5.4 Black List
Select Menu > Settings >Security>Black List
Any phone number can be blacklisted. To do so,
select Black List >Options> New if you want to
manually enter the number, or Import Contact if you