Samsung E590 free unlocking tricks..
Tested ko po ang procedure na ito sa Samsung E590 network locked..

First remove back cover

insert not accepted sim ng half only
like this


then insert the battery and hold like this

then power on the phone

next step is
Make a FULL reset: *2767*3855#
ganito ang lalabas sa screen

next step is PUSH the simcard using twisser bago magrestart ang phone..

Now the non accepted is accepted..! pero di pa tapos...
next is
Change the NCK password to 8 zeros: *7465625*638*00000000*00000000#
Last step
Disable network lock: #7465625*638*00000000#

First remove back cover

insert not accepted sim ng half only
like this


then insert the battery and hold like this

then power on the phone

next step is
Make a FULL reset: *2767*3855#
ganito ang lalabas sa screen

next step is PUSH the simcard using twisser bago magrestart ang phone..

Now the non accepted is accepted..! pero di pa tapos...
next is
Change the NCK password to 8 zeros: *7465625*638*00000000*00000000#
Last step
Disable network lock: #7465625*638*00000000#