There are lots of shops on the high street that offer to unlock mobile phones, I have gone to them in the past and it is quiet cheap and quick to get done
The safest and easiest way to unlock mobile phones is through unlock code. You can get the specific unlock code for your Samsung u600 at - http://globalunlock.c...blic/cart/buynow/1051 Media URL: http://globalunlock.com/phones/ Description:
http://www.unlockthatmobile.com/ is one of the value for money sites when it comes to unlocking. The majority of mobile phone models are supported including samsung, motorola, blackberry, lg, htc, etc etc.
If your Samsung U600 was network locked you can easily unlock it using the unlock code.There are many ways to get the code from service provider,Shops and so on..After you get the code visit http://www.mobileunlockguide.com/samsung-u600 for free instruction on how to use that code to unlock your mobile.