1. Insert a non accepted sim, most times it will show "Phone Restricted"
2. Press the UNDO option
3. You should see a box that says enter restriction code.
4. Enter the code given and then press (OK)
Remove Your Sim Card, Power The Phone On
Press # From The (Insert Sim) Screen
Enter codes WITHOUT spaces.
Press * 3 times fast for (p)
Press * 4 times fast for (w)
Press * 2 times fast for (+)
Verify code before pressing the last #(No Private Messages Please)
?operation restricted? means. After you have made 5 attempts or even 3 attempts on newer phones and failed, the phone displays that message, meaning that the phone is "hard locked." At this point, you will still be able to use phone with the original provider, but you will not be able to unlock it by codes. You will need to take or send it to a professional for direct unlocking service.