Hi qwerty4,
Unlocking software tool is not safe to unlock your samsung z107. Because sometime error may occur. So better you can use unlock code. It is the best and safe method to unlock your samsung z107. If you need unlock code you can visit this site Theunlockarena.com here you can get the unlock code and unlock your samsung z107 easily. To get the code you have to mention which country is locked now,network provider and imei number. Then they send unlock code through email.
