You must have a SIM card in your phone to complete these steps, we have found that this procedure works with a Vodafone Sim card in the phone (can be active or inactive ). Make sure the phone is not displaying the low battery warning!

1. Obtain your Unlock Code from the Vodafone Web Site
   
   
2. Power on
   
   
3. Go to Settings (or Options)
   
   
4. Go to Advanced Options
   
   
5. Go to SIM Card
   
   
6. Type MEPD
   
   
7. Type MEP[Alt + 2] (all this with Vodafone SIM inside)
   
   
8. It will ask you for the unlock code.
   
   
9. Enter it and your phone is unlocked!