To use your phone on another network, you need to unlock your phone. You should test your device with a non-Vodafone SIM card to see if it's currently locked. 

We will provide you with your device’s network unlock code as quickly as possible. This may take up to 20 working days, as codes may need to be requested from the relevant phone manufacturer and subsequent response times vary.

You will be contacted as soon as your code has been retrieved. You do not need to take any further actions once your NAC request has been submitted.