I unlocked my 6230 using Nokia free Calculator, I used code no 7.
I can now both make and recive call.
Unfortunally I forgot to remove the SIM, and now when I try to
use the SIM-memory, the phone says "SIM-card not ready".

- Can I without risking anything remove the SIM and retype the code?
- Wasn't the typed code correct?
- Should I order a new SIM?