78
Incorrect Code Entered—You are prompted to try again. After 
failing, your MTH800 will be blocked. Please check with your 
Service Provider how many failed attempts are allowed.
How to unblock the MTH800
The display shows 
Unit Blocked. You send or receive calls an 
Emergency Call.
To unblock the MTH800, enter the PUK (Personal 
Unblocking Key). The PUK 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.
The default PIN code is 0000.
6802972C35.book  Page 78  Monday, August 16, 2004  9:22 PM