You can specify the Current network it locked now??
Then you can use the Unlock code to Open the Mobile From the Network lock,You can get the Free Unlocking Instructions from here
Mobileunlockguide
Samsung T109 Unlocking Instructions
Warning: Do not enter any wrong unlock unlock
codes on your Samsung T109 mobile phones. If you enter over a certain
amount of wrong unlock codes on your mobile phone, your phone may get
hard locked and sometimes become unusable.Method 1:
1 - Switch ON your Samsung T109 with a
NOT ACCEPTED SIM Card.
2 - Samsung T109 will ask for "Password".
3 - Enter the Unlock Code.
OR (if the Samsung T109 shows "Insert Correct SIM Card")
Method 2:
1 - Switch ON your Samsung T109 with a
NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung T109.
3 - Compose :
#0111*CODE#.
NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung T109 is locked to.
CODE: Its the unique Unlock Code for your Samsung T109.
If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung T109.