Alcatel OT 512 Manual page 51

I cannot send messages
My phone main screen displays a
(black envelope) icon
I already entered 3 incorrect PIN
codes
- Check the service centre number
with your operator
- Your correspondent's phone could
be incompatible with the transmission
mode you are using (EMS standard for
any transmission of icons, sounds,...)
- Too many short messages are stored
in your SIM memory, delete some!
- Contact your operator to get your
PUK code to unblock your mobile
100
Notes...
101