Motorola C139 - Manual (Page 55)

53 troubleshooting
messages: “enter special
code,” “SIM locked—contact
service provider,” “subsidy
password”
Question: What do these messages mean?
Answer: You might see this message if you
have an incorrect SIM card or if you have
incorrectly entered your code five times. You
will have to enter it correctly. Contact your
service provider, if necessary. You might need
to replace your SIM card.
keypad does not respond
Question: My display is dark and the keypad
doesn’t respond. Why not?
Answer: The keypad could be automatically
locked. To check this, please unlock your
keypad by pressing M and *.
If you would not like this feature enabled on
your phone, please go to M > Settings > Security
> Auto Key Lock, to disable the auto keypad lock
function or change the timers associated with
it. If you disable this feature, you can still
manually lock and unlock the keypad by
pressing M and *.