i went on this link to try and unlock my phone http://www.mobile-files.com/forum/archive/index.php/t-34601.html
its a samsung sgh-d900i,well what happens is i do the first step
entering *2767*3855# to the phone without a sim in it because it doesn't work with any sim card .and it reboots,after that i type in *7465625*638*00000000*00000000# like it sais.as i finish doing that it would say no lock code in sim,whats wrong with it i cant exaclly put a sim card of its own network either it will allways say network lock.

i tried all these other methods and it sais stuff like network lock is acive and the rest inactive, its really frustraiting,should i take it to a special unlock shop.do you know if this will solve the problem.thank you for any answers x