unlock nokia 3595 for att

can some please help me unlock my nokia 3595 for att

imei #010166002372024

thanks for all your help

i don't know whether this phone is DCT 4 or DCT 3 ?

do you know?

the code would be
#pw+112174646063373+1#

if DCT 4

take sim out. enter code
only enter code once!