I used to work for Vodafone, they lock all their pay as you talk phones, and all phones that use Vodafone Live. That would include the 3650 i'm afraid. Vodafone will unlock it for you if you request it for around �20, but like I said, as the 3650 is on Vodafone Live, you have no chance. Your best bet would be popping into your local Vodafone store and discussing your needs with an assistant....can't tell I worked there can you! :o)