1 Check status of phone
*#7465625#
You will see that the network lock is active.
2 do a EEprom Reset
#*7337#
This will reset the phone ....you will keep the messages and phone numbers etc, but wap, internet, bluetooth, ring tones settings will all have to be reset.
3 Check status of phone again
*#7465625#
You will see that the network lock is now inactive.
BR.