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To unblock the MTH800, enter the PUK (Personal
Unblocking Key). ThePUK is an eight-digit master code to be
obtained from your Service Provider.
After entering the PUK successfully, you will be prompted to
replace the forgotten code.
At the New Code? prompt enter the new 4-digit code, and
repeat the code to confirm. If the code does not match, you
will be prompted to enter it again until the new code message
is accepted.
Change Code
From the main menu, select Security > Change Code.
At the Old Code? prompt, enter the 4-digit code. If the old
code does not match the entered code at verification, the
display prompts you to re-enter the old code.
If the entered code matches the old code, the display
prompts you to enter a new 4-digit code and to repeat it for
confirmation. If the confirmation code does not match the
new code, the display prompts you to re-enter the new code.
When the new code is accepted, the display returns to the
Security sub-menu.
Locking/Unlocking the Keypad
To prevent accidental key/button presses:
Press to lock/unlock the keypad.
Service Provider can choose the notification for the Keypad
lock and if to lock the PTT.
The default PIN code is 0000.
When there is an incoming call and the keypad with PTT are
locked, you can still use the PTT, rotary knob, , and .
The Emergency button is not locked. Entering Emergency
Operation, unlocks all keys.
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