Okay, I'm considering a new phone but I am happy with my current plan (on vodafone); its just not the phone that I am happy with. I am considering purchasing this phone:
http://dicksmith.com.au/product/E6726/vodafone-nokia-e71-black-pre-paid-mobile-phone

My question is: If i purchase this phone, take the sim out of it and put my current sim in that phone, will it work? Or, will the phone be still locked to that particular sim considering its a pre-paid phone (even though its still a vodafone sim)?