How can I unlock a Nokia N73?
You can use Phoenix Studio (for nokia)!
But if you accept to use it, it means you will enter in a advanced & dangerous zone!
I will not explain how to do it here, since it's a little long to explain!
Check on google: How to flash Nokia phone unlocked with phoenix software!
It's up to you than, if you want to take the risk or not!
Yeah I used it too back in the day! Good times..
you can buy a code for 20ish dollars on ebay, but there aren't any free. what i do is call my carrier give my imei code that's on your phone, ask for an unlock code and they usually give it to me because my account is in good standing. sometimes some service providers can be biased and not give you a code so i call multiple times