samsung T349 T-mobile lock

by using codes here it is

insert its original sim t-mobile

then type *745625*638*00000000*00000000#

then po will says PHONE PERSONALIZED it will not reboot
after that type
#745625*638*00000000#

now ur phone is unlock

remove the original sim insert sim any carrier ad test

you can see if network lock by *#745625#

works 1000%