Unlock your Vodafone phone, and you're free to take it to Optus, Telstra, amaysim, or basically any telco that offers SIM-only / BYO phone plans. Once the carrier sends you the code, you just need to type it in the ‘Sim Network Unlock Pin’ screen and then tap on the unlock button.
You can give the number to your current carrier and then ask them for the code. Unlock the Android Phone from the ‘Sim Network Unlock Pin’ Screen.
