My mobile is asking me to input an NCK code. What does this mean?
An NCK code is a SIM (un)lock code.
If you are seeing this message it indicates that the SIM you have installed is for a network other than the one your phone
is setup to use.
We are unable to prove you with an NCK code as we do not supply or manage SIM cards.
However if you contact the network operator for which the phone was originally intended they should be able to supply you with an unlock code (NCK / SIM unlock code) subject to their terms and conditions.