INSTRUCTIONS:
1. Phone must be powered on.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Type *#9090# and choose USB (or 'DM/DUN over HSIC').
4. Reboot phone.
5. Connect USB cable, install drivers if needed.
6. Select Samsung diagnostic port in port settings.
7. Press 'Unlock' button for direct unlock.
TOOLS:
micro usb cable
z3x pro...
pc/computer..
STATUS:
lock sa AT&T

THE STORY.....
first ginawa ko ni root ko muna
)

=))=))

:clap:clap
pagkatapos ma root di unlock ko na sya...

di na pala kailangan ng rooting...=))
)
FINISH PRODUCT...

NOTE: wag na iroot direct unlock na sa pro galing@};-
1. Phone must be powered on.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Type *#9090# and choose USB (or 'DM/DUN over HSIC').
4. Reboot phone.
5. Connect USB cable, install drivers if needed.
6. Select Samsung diagnostic port in port settings.
7. Press 'Unlock' button for direct unlock.
TOOLS:
micro usb cable
z3x pro...
pc/computer..
STATUS:
lock sa AT&T

THE STORY.....
first ginawa ko ni root ko muna
)
=))=))

:clap:clap
pagkatapos ma root di unlock ko na sya...

Code:
Operation: Unlock
Selected model: SGH-I257
Selected port: COM161 SAMSUNG Mobile USB Serial Port
Software version: 26.5
Reading phone info...
Reading IMEI... OK
IMEI: 358583050406266
Unlocking... OK
Reseting... OK
Unlock done
Done with Samsung Tool PRO v.26.5
di na pala kailangan ng rooting...=))
)FINISH PRODUCT...

NOTE: wag na iroot direct unlock na sa pro galing@};-